Commit Graph

102 Commits

Author SHA1 Message Date
Dodji Seketeli
103a6eb94f Control symbols exported from libabigail.so
Symbols of pretty much all member functions of types that are meant to
be "private" to translation units that contribute to libabigail.so
were exported because we didn't do much to prevent that.

This patch starts controlling the set of symbols that are exported.

By default, symbols of any entity declared in a translation unit that
contributes to libabigail.so are hidden by default.  Only symbols of
entities declared in public headers (headers in include/*.h) are
exported.

There are many ways to achieve that.  This patch chooses to avoid
cluttering declarations of entities in the public header by adding
__attribute__((visibility="default")) to every declared type of
function in there.

Rather, the patch uses "#pragma GCC visibility push(default)" before
entities declared on those headers.  By doing so, all those entities
have their symbol marked as "visible" by the compiler.  Once the
header are #included, the #pragma GCC visibility pop" is used, so that
anything else has its symbol be hidden from that point on.

Note that for ease of maintenance the patch uses the macros
ABG_BEGIN_EXPORT_DECLARATIONS and ABG_END_EXPORT_DECLARATIONS rather
than using the pragma directive directly.

I believe this is a more elegant way of handling visibility, compared
to cluttering every single declaration in public headers with a
"__attribute__((visibility=("default")))" or with a macro which
expands to it.

This reduces the the set of symbols exported by libabigail.so from
20000+ to less than 5000.

	* VISIBILITY: New documentation about this visiblity business.
	* CONTRIBUTING: Update the "contributing guide" to refer to symbol
	visibility issues.
	* configure.ac: Define a variable VISIBILITY_FLAGS that is set to
	the -fvisibility=hidden flag to pass to GCC, when its available.
	* src/Makefile.am: Add VISIBILITY to source distribution.  Also
	add COMPILING and COMMIT-LOG-GUIDELINES that were missing.
	* src/Makefile.am: Use the new $(VISIBILITY_FLAGS) when buiding
	the library.
	* tests/Makefile.am: Use the new $(VISIBILITY_FLAGS) when buiding
	tests.
	* tools/Makefile.am: Use the new $(VISIBILITY_FLAGS) when buiding
	tools.
	* src/abg-comp-filter.cc: Enclose inclusion of public headers in
	ABG_BEGIN_EXPORT_DECLARATIONS and ABG_END_EXPORT_DECLARATIONS to
	export the symbols of entities declared in there.
	* src/abg-comparison.cc: Likewise.
	* src/abg-config.cc: Likewise.
	* src/abg-corpus.cc: Likewise.
	* src/abg-diff-utils.cc: Likewise.
	* src/abg-dwarf-reader.cc: Likewise.
	* src/abg-hash.cc: Likewise.
	* src/abg-ini.cc: Likewise.
	* src/abg-ir.cc: Likewise.
	* src/abg-libxml-utils.cc: Likewise.
	* src/abg-libzip-utils.cc: Likewise.
	* src/abg-reader.cc: Likewise.
	* src/abg-suppression.cc: Likewise.
	* src/abg-tools-utils.cc: Likewise.
	* src/abg-traverse.cc: Likewise.
	* src/abg-viz-common.cc: Likewise.
	* src/abg-viz-dot.cc: Likewise.
	* src/abg-viz-svg.cc: Likewise.
	* src/abg-workers.cc: Likewise.
	* src/abg-writer.cc: Likewise.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2016-07-27 12:51:02 +02:00
Chenxiong Qi
1a00cad493 Make fedabipkgdiff consistent with Libabigail's other tests
In the libabigail project, almost all the tests for the tools follow a
similar pattern.  The test contains a set of input files to compare.
The result of the comparison is thus compared to a set of reference
comparison result.

This approach is already documented in the CONTRIBUTING file.

There are several interesting properties with this scheme.  First, it
capture the behaviour of the tools, including what is shown to the
user.

Second, it eases the job of a hacker who wants to add a new test for a
new behaviour of a given tool.  The user just has to provide:

  1/ A new reference output of the new use case of the tool (that is easily
     constructed by using the tool itself and saving its output) and add an
     entry to array of entries that describe what to compare

  2/ A new set of inputs to the tool

And voila.

Unfortunately, fedabipkgdiff tests don't follow this scheme.  That
make them surprising to hackers who read the source code of the
existing tests, at very least.  Also, the fedabipkgdiff tests were
only unit tests.  They were not testing the tool as used by users in
general.

This patch makes the fedabipkgdiff tests follow the general approach
of the tests of the other Libabigail tools.

The patch first craetes a program names tests/mockfedabipkgdiff.  It's
a wrapper around tools/fedabipkgdiff.  It overloads the Koji client of
fedabipkgdiff with a fake Koji client that gets the Fedora packages
locally, from tests/data/test-fedabipkgdiff/packages.  In other words,
mockfedabipkgdiff is fedabipkgdiff without going to the network.

I believe that in the future, tests/mockfedabipkgdiff should be killed
when fedabipkgdiff is able to cache a local description of a local
partial view of a Koji repository, along with the build packages that
were already downloaded.

That way, calling fedabipkgdiff twice with the same set of option
should make the tool perform correctly without going to the netword on
the second invocation.  We should be able to save the local partial
view of the Koji repository under e.g,
tests/data/test-fedabipkgdiff/local-koji and tell fedabipkgdiff to use
that, instead of using the network.  But we are not there yet.  So for
now, I am using mockfedabipkgdiff.

Then, tests/runtestfedabipkdiff.py.in has been re-written to use
tests/mockfedabipkgdiff and to look like what is described in
CONTRIBUTING as far as how Libabigail tools' tests are organized:
mockfedabipkgdiff is called to perform a comparison.  The result of
the comparison is then compared (using GNU diff) to a reference
comparison result file.

Please note that tests/runtestfedabipkdiff.py is relatively fast for
the moment.  But when it contains much more tests and start becoming
slow, then we'll need to change the code to run several comparisons in
parallel, just like we do today in tests/test-diff-filter.cc.  At that
point, I believe I'll just re-write this in C++, just like
tests/test-diff-filter.cc because that will allow us to have true
concurrent code based on the abigail:workers API.  For now, I am
keeping this in Python also because I think that keeps Chenxiong happy
;-)

To be sure that fedabipkgdiff (and its underlying abipkgdiff) are
really comparing all the packages they are supposed to compare and
also all the binaries in those packages, I have added a new
--show-identical-binaries to abipkgdiff and fedabipkgdiff.  That
option shows the name of the binaries (and packages) that are
compared, *even if* the ABI of those binaries are identical.  Because
otherwise, today, if two binaries (or packages) have the same ABI,
nothing is displayed.

For instance, here is the result of comparing a package against
itself, using this new --show-identical-binaries options:

    dodji@adjoa:patches$ ./tools/fedabipkgdiff --abipkgdiff ./build/tools/abipkgdiff --show-identical-binaries  dbus-glib-0.80-3.fc12.x86_64.rpm dbus-glib-0.80-3.fc12.x86_64.rpm
    Comparing the ABI of binaries between dbus-glib-0.80-3.fc12.x86_64.rpm and dbus-glib-0.80-3.fc12.x86_64.rpm:

    ================ changes of 'dbus-binding-tool'===============
    No ABI change detected
    ================ end of changes of 'dbus-binding-tool'===============

    ================ changes of 'libdbus-glib-1.so.2.1.0'===============
    No ABI change detected
    ================ end of changes of 'libdbus-glib-1.so.2.1.0'===============
    dodji@adjoa:patches$

And here is what this command before that patch would do:

    dodji@adjoa:patches$ ./tools/fedabipkgdiff --abipkgdiff ../master/build/tools/abipkgdiff dbus-glib-0.80-3.fc12.x86_64.rpm dbus-glib-0.80-3.fc12.x86_64.rpm
    Comparing the ABI of binaries between dbus-glib-0.80-3.fc12.x86_64.rpm and dbus-glib-0.80-3.fc12.x86_64.rpm:
    dodji@adjoa:patches$

The rest of the patch is mostly new test inputs material and the
necessary adjustments following all the changes above.

	* configure.ac: Do not require Python dependencies itertools,
	unittest and StringIO anymore as they are not used anymore.
	Require new module tempfile now.  Generate new executable script
	tests/mockfedabipkgdiff from tests/mockfedabipkgdiff.in.
	* doc/manuals/abipkgdiff.rst: Add doc for new option
	--show-identical-binaries to abipkgdiff
	* doc/manuals/fedabipkgdiff.rst: Add doc for new options
	--show-identical-binaries to fedabipkgdiff.
	* tools/abipkgdiff.cc (options::show_identical_binaries): New data
	member.
	(options::options): Initialize new data member.
	(display_usage): Add a new help string for the new
	--show-identical-binaries option.
	(parse_command_line): Parse the newq --show-identical-binaries
	command line switch.
	(pthread_routine_compare): When the comparison of two binaries is
	empty, if --show-identical-binaries was provided, then emit some
	output saying the comparison did yield the empty set.
	* tools/fedabipkgdiff (DEFAULT_ABIPKGDIFF): Store the default path
	to abipkgdiff in this new global variable.  Naming this default
	path is useful because it can then be cleanly overloaded when
	using mock.patch.
	(build_path_to_abipkgdiff): Return the new DEFAULT_ABIPKGDIFF
	global variable.
	(cmd): Parse the new --show-identical-binaries command line
	switch.
	* tests/data/test-diff-pkg/test-dbus-glib-0.80-3.fc12.x86_64-report-0.txt:
	New reference output.
	* tests/data/test-fedabipkgdiff/test0-from-fc20-to-fc23-dbus-glib-report-0.txt:
	Likewise.
	* tests/data/test-fedabipkgdiff/test1-from-fc20-to-dbus-glib-0.106-1.fc23.x86_64-report-0.txt:
	Likewise.
	* tests/data/test-fedabipkgdiff/test2-dbus-glib-0.100.2-2.fc20--dbus-glib-0.106-1.fc23-report-0.txt:
	Likewise.
	* tests/data/test-fedabipkgdiff/test3-dbus-glib-0.100.2-2.fc20.i686--dbus-glib-0.106-1.fc23.i686-report-0.txt:
	Likewise.
	* tests/mockfedabipkgdiff.in: New uninstalled script template.
	* tests/runtestfedabipkgdiff.py.in (counter)
	(temp_file_or_dir_prefix, UtilsTest, RPMTest, LocalRPMTest)
	(RunAbipkgdiffTest, GetPackageLatestBuildTest, DownloadRPMTest)
	(BrewListRPMsTest, AssertionHelper, MockGlobalConfig)
	(BUILT_ABIPKGDIFF, CompareABIFromCommandLineTest): Remove these
	classes, global variables and functions.
	(FEDABIPKGDIFF, TEST_SRC_DIR, TEST_BUILD_DIR, INPUT_DIR)
	(OUTPUT_DIR, FEDABIPKGDIFF_TEST_SPECS): New global variables.
	(ensure_output_dir_created, run_fedabipkgdiff_tests, main): New
	functions.
	* tests/test-diff-pkg.cc (in_out_specs): Add
	tests/data/test-diff-pkg/test-dbus-glib-0.80-3.fc12.x86_64-report-0.txt
	to the set of reference outputs to consider.
	* tests/Makefile.am: Add non-installed script mockfedabipkgdiff to
	source distribution. Also added
	tests/data/test-diff-pkg/test-dbus-glib-0.80-3.fc12.x86_64-report-0.txt,
	tests/data/test-fedabipkgdiff/test0-from-fc20-to-fc23-dbus-glib-report-0.txt,
	tests/data/test-fedabipkgdiff/test1-from-fc20-to-dbus-glib-0.106-1.fc23.x86_64-report-0.txt,
	tests/data/test-fedabipkgdiff/test2-dbus-glib-0.100.2-2.fc20--dbus-glib-0.106-1.fc23-report-0.txt
	and
	tests/data/test-fedabipkgdiff/test3-dbus-glib-0.100.2-2.fc20.i686--dbus-glib-0.106-1.fc23.i686-report-0.txt
	to source distribution.

Signed-off-by: Chenxiong Qi <cqi@redhat.com>
Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2016-07-15 19:41:08 +02:00
Dodji Seketeli
b36ca1501e Bug 20180 - Support system-wide suppression specifications
This patch adds support for loading system and user level suppression
specifications for libabigail tools.

At launch time, relevant libabigail tools (abidiff, abipkgdiff
fedabipkgdiff for now) read the default system suppression
specification file, if it's present, from a file which path is the
value of the environment variable
LIBABIGAIL_DEFAULT_SYSTEM_SUPPRESSION_FILE, if set, or from the file
$libdir/libabigail/default.abignore.

Then it reads the user system suppression specification file, if it's
present, from a file which path is the value of the environment
variable LIBABIGAIL_DEFAULT_USER_SUPPRESSION_FILE, if set, or from the
file $HOME/.abignore.

The content of the user system suppression file is merged with the
content of default system suppression file.

That content is also merged with the content of the suppression
specification files that might be provided by the --suppressions
command line option of the invoked tools.

The resulting set of all these suppression specifications is thus used
to filter the ABI change reports that are emitted.

abidiff, abipkgdiff and abipkgdiff gain a --no-default-suppression
option to avoid loading any of these default suppression specification
files.

The patch also installs a default.abignore file into $(pkglibdir).
Note that on x86_64, that directory is /usr/lib64/libabigail.  Now we
just need to think about the content of that default.abignore file.

	* doc/manuals/abidiff.rst: Document the default suppression
	scheme, its interaction with the --supprs option and the new
	--no-default option.
	* doc/manuals/abipkgdiff.rst: Likewise.
	* doc/manuals/fedabipkgdiff.rst: Likewise.
	* configure.ac: Generate the tests/runtestdefaultsupprs.py file
	from the new tests/runtestdefaultsupprs.py.in template.
	* default.abignore: New file.
	* Makefile.am: Add it to source distribution.
	* src/Makefile.am: Define the ABIGAIL_ROOT_SYSTEM_LIBDIR
	preprocessor macro that is set the value of the $libdir autotools
	macro.
	* include/abg-tools-utils.h: Update copyright years.
	(get_system_libdir, get_default_system_suppression_file_path)
	(get_default_user_suppression_file_path)
	(load_default_system_suppressions)
	(load_default_user_suppressions): Declare new functions
	* src/abg-tools-utils.cc (get_system_libdir)
	(get_default_system_suppression_file_path)
	(get_default_user_suppression_file_path)
	(load_default_system_suppressions)
	(load_default_user_suppressions): Define new functions.
	(is_regular_file): Amend this so that it return true for symlinks
	to regular files too.
	(is_dir): Amend this so that it returns true for symlinks to
	directories too.
	* tools/abidiff.cc (options::no_default_supprs): New data member.
	(options::options): Initialize the new data member.
	(display_usage): Display a new help string for the new
	--no-default-suppression command line option.
	(parse_command_line): Parse this new command line option.
	(set_diff_context_from_opts): Load the default suppression
	specifications, unless --no-default-suppression or --supprs was
	provided.
	* tools/abipkgdiff.cc (options::no_default_supprs): New data
	member.
	(options::options): Initialize the new data member.
	(parse_command_line): Parse the new --no-default-suppression
	command line option.
	(main): Load the default suppression specifications, unless
	--no-default-suppression or --supprs was provided.
	* tools/fedabipkgdiff (abipkgdiff): Add --no-default-suppression
	to the invocation of abipkgdiff if it was provided on the command
	line.
	(build_commandline_args_parser): Parse the new
	--no-default-suppression command line option.
	* tests/runtestdefaultsupprs.py.in: New test harness template.
	* tests/Makefile.am: Add the new runtestdefaultsupprs.py to the
	set of tests.
	* tests/data/test-default-supprs/test0-type-suppr-0.suppr: New
	test input.
	* tests/data/test-default-supprs/test0-type-suppr-report-0.txt: Likewise.
	* tests/data/test-default-supprs/test0-type-suppr-v0.o: Likewise.
	* tests/data/test-default-supprs/test0-type-suppr-v1.o: Likewise.
	* tests/data/test-default-supprs/dirpkg-1-dir-report-0.txt:
	Likewise.
	* tests/data/test-default-supprs/dirpkg-1-dir1: Likewise.
	* tests/data/test-default-supprs/dirpkg-1-dir2: Likewise.
	* tests/data/Makefile.am: Add new the new tests input above to
	Makefile.am.
	* tests/runtestcanonicalizetypes.sh.in: Pass
	--no-default-suppression to abidiff invocations.
	* tests/runtestdefaultsupprs.py.in: Likewise.
	* tests/test-abidiff-exit.cc: Likewise.
	* tests/test-diff-dwarf-abixml.cc: Likewise.
	* tests/test-diff-filter.cc: Likewise.
	* tests/test-diff-suppr.cc: Likewise.
	* tools/abidiff.cc: Likewise.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2016-05-30 18:39:49 +02:00
Dodji Seketeli
b28cb4ec6d Fix whitespaces in autotools files
* configure.ac: Fix some white spaces.
	* tests/Makefile.am: Likewise.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2016-05-22 23:20:13 +02:00
Dodji Seketeli
3dbe842159 Support running "make check-valgrind"
This patch allows maintainers to run:

     make -C <builddir>/tests check-valgrind

This runs the test suite under the Valgrind memory checker.

It also adds this target:

   make -C <builddir>/tests check-valgrind-memcheck-recursive

It runs the memcheck tool on the tests so that programs forked by them
are memchecked too.  This is to allow to memcheck the libabigail tools
that are forked by the individual tests.

	* autoconf-archive/ax_valgrind_check.m4: Add new file.  Copied it
	from http://www.gnu.org/software/autoconf-archive/ax_valgrind_check.html.
	* configure.ac: Include the new ax_valgrind_check.m4 file.
	Initialize the valgrind checking on tests.  Update the configure
	status.
	* tests/test-valgrind-suppressions.supp: New valgrind suppression
	file to silence memcheck leak errors from python.
	* tests/Makefile.am: Add test-valgrind-suppressions.supp to source
	distribution.  Add check-valgrind-memcheck-recursive target.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2016-05-22 23:20:12 +02:00
Dodji Seketeli
20ffce5239 Do not run fedabipkgdiff tests if --enable-fedabipkgdiff is turned off
* tests/Makefile.am: Make running runtestfedabipkgdiff be
	dependent on ENABLE_FEDABIPKGDIFF.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2016-05-16 13:12:05 +02:00
Chenxiong Qi
57dcfb18f5 Bug 19428 - New fedabipkgdiff utility
fedabipkgdiff is a convenient way to compare the ABI of Fedora
packages easily.

The first version of fedabipkgdiff introduced by this patch lets users
perform operations like:

    fedabipkgdiff --from fc23 foo-0.1-1.fc23.x86_64.rpm
    fedabipkgdiff --from fc23 --to fc24 foo
    fedabipkgdiff foo-0.1-1.fc23 foo-0.1-1.fc24
    fedabipkgdiff foo-0.1-1.fc23.i686 foo-0.1-1.fc24.i686
    fedabipkgdiff --all-subpackages foo-0.1-1.fc23 foo-0.1-1.fc24

	* autoconf-archive/ax_compare_version.m4: New file copied from the
	autoconf-archive project.
	* autoconf-archive/ax_prog_python_version.m4: Likewise.
	* autoconf-archive/ax_python_module.m4: Likewise.
	* Makefile.am: Add the new files above to the source distribution.
	* configure.ac: Include the new m4 macros from the autoconf
	archive. Add a new --enable-fedabipkgdiff option. Update the
	report at the end of the configure process to show the status of
	the fedabipkgdiff feature. Add check for prerequisite python
	modules argparse, glob, logging, os, re, shlex, subprocess, sys,
	itertools, urlparse, itertools, shutil, unittest, xdg, koji and
	mock.  These are necessary for the unit test of
	fedabipkgdiff. Generate tests/runtestfedabipkgdiff.py into the
	build directory, from the tests/runtestfedabipkgdiff.py.in input
	file.
	* tools/Makefile.am: Include the fedabipkgdiff to the source
	distribution and install it if the "fedabipkgdiff" feature is
	enabled.
	* tests/Makefile.am: Rename runtestfedabipkgdiff.sh into
	runtestfedabipkgdiff.py.  Add the new runtestfedabipkgdiff.py.in
	autoconf template file in here.
	* tests/runtestfedabipkgdiff.py.in: New unit test file.
	* tools/fedabipkgdiff: New fedabipkgdiff tool.
	* doc/manuals/fedabipkgdiff.rst: New manual.

Signed-off-by: Chenxiong Qi <cqi@redhat.com>
Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2016-05-13 00:42:36 +02:00
Dodji Seketeli
4b7e295b20 Bug 19596 - Incorrect exit status for incompatible ABI change
The comparison engine doesn't take virtual offset changes into account
when deciding if a diff node carries an incompatible change.  This is
obviously an oversight.

Fixed thus.

	* include/abg-comparison.h (enum diff_category): Adjust the
	comment for enumerator VIRTUAL_MEMBER_CHANGE_CATEGORY; changes of
	this category are incompatible ABI changes.
	(corpus_diff::diff_stats::num_func_with_virtual_offset_changes):
	Declare new accessors.
	* src/abg-comparison.cc
	(corpus_diff::diff_stats::priv::num_func_with_virt_offset_changes):
	New data member.
	(corpus_diff::diff_stats::priv::priv): Initialize the new data
	member.
	(corpus_diff::diff_stats::num_func_with_virtual_offset_changes):
	Define new accessors.
	(corpus_diff::priv::apply_filters_and_compute_diff_stats): Use the
	new accessor to set the number of functions with virtual offset
	changes onto the stats data structure.
	(corpus_diff::has_incompatible_changes): Take functions with
	virtual offset changes into account.
 	* tests/test-abidiff-exit.cc: New test harness to test for exit
	codes of abidiff.
	* tests/Makefile.am: Build the new test harness runtestabidiff
	from the test-abidiff-exit.cc source file.
	* tests/data/test-abidiff-exit/test1-voffset-change-report0.txt:
	New reference test output.
	* tests/data/test-abidiff-exit/test1-voffset-change-v0.cc: New
	test input source code.
	* tests/data/test-abidiff-exit/test1-voffset-change-v0.o: New test input.
	* tests/data/test-abidiff-exit/test1-voffset-change-v1.cc: New
	test input source code.
	* tests/data/test-abidiff-exit/test1-voffset-change-v1.o: New test input.
	* tests/data/Makefile.am: tests/data/Makefile.am: Add the new test
	inputs above to the source distribution.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2016-02-10 21:31:53 +01:00
Dodji Seketeli
5e171c530c Sort the tests run in tests/ by running the slowest ones first
This speeds up the tests when they are run in parallel.

	* tests/Makefile.am: Sort the tests  by running the slowest ones
	first.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2016-01-18 18:23:18 +01:00
Dodji Seketeli
3f22e252ae Avoid canonicalizing function types too early
In the DWARF reader it can happen that a function type being built is
canonicalized too early, before the type is done building.  This leads
to some spurious type differences later at comparison time.  It
typically happens when a sub-type of the function type refers to the
function type itself.  We correctly handle similar cases for class
types, but not for function types.  Oops.

This patch handles this case for function types in the dwarf reader
and in the abixml reader.

	* src/abg-dwarf-reader.cc (die_function_type_map_type): New
	typedef.
	*  ():
	(read_context::die_wip_function_types_map_): New data member.
	(read_context::{die_wip_function_types_map,
	is_wip_function_type_die_offset}): New methods.
	(build_function_type): Mark the function being built as "work in
	progress".
	(maybe_canonicalize_type): Do not early-canonicalize WIP function
	types.
	* src/abg-reader.cc (build_function_type): Mark the function being
	built as "work in progress".
	* tests/test-diff-dwarf-abixml.cc: New test harness.
	* tests/Makefile.am: Add new test harness runtestdiffdwarfabixml
	to the build system.
	* tests/data/test-diff-dwarf-abixml/test0-pr19026-libvtkIOSQL-6.1.so.1:
	New test binary input.
	* tests/data/test-diff-dwarf-abixml/test0-pr19026-libvtkIOSQL-6.1.so.1.abi:
	New test input.
	* tests/data/Makefile.am: Add new test inputs to source
	distribution.
	* tests/data/test-read-dwarf/test17-pr19027.so.abi: Adjust.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2015-11-09 18:33:58 +01:00
Dodji Seketeli
7b35e89315 Bug 19139 - DWARF reader doesn't handle garbage in function names
In this bug, the DWARF debug info of the binary (generated by Intel's
ICC compiler) has interesting constructs like:

     [ 6b5a0]    subprogram
		 decl_line            (data2) 787
		 decl_column          (data1) 15
		 decl_file            (data1) 46
		 declaration          (flag)
		 accessibility        (data1) public (1)
		 type                 (ref4) [ 6b56a]
		 prototyped           (flag)
		 name                 (string) "ldiv"
		 MIPS_linkage_name    (string) "ldiv"
     [ 6b5b6]      formal_parameter
		   type                 (ref4) [ 5f2aa]
		   name                 (string) "$Ë2"
     [ 6b5bf]      formal_parameter
		   type                 (ref4) [ 5f2aa]
		   name                 (string) "$Ë3"

Note the strings that make up the name of the formal parameters of the
function, near the end:

     [ 6b5b6]      formal_parameter
		   type                 (ref4) [ 5f2aa]
		   name                 (string) "$Ë2"
     [ 6b5bf]      formal_parameter
		   type                 (ref4) [ 5f2aa]
		   name                 (string) "$Ë3"

The strings "$Ë2" and $Ë3" (which are the names of the
parameters of the function) are garbage.

Libabigail's DWARF reader naively uses those strings as names for the
function parameters, in the type of the function.

Then, the abixml writer emits an XML document, with these strings as
property values, representing the name of the type of the function.

And of course, the XML later chokes when it tries to read that XML
document, saying that the property is not valid UTF-8.

This patch addresses the issue by dropping those garbage names on the
floor, for function type names.  In that context, any string that is
not made of ASCII characters is considered as being garbage, for now.

The patch, in the abixml writer, also escapes function parameters
names so that they don't contain characters that are not allowed in
XML.  The abixml reader already handles the un-escaping of the names
it reads, so I think there is nothing to do there.

Ultimately, I guess I should get the unicode value of the characters
of that string, encode the string into UTF-8 and use the result as the
name for the parameter.  That would mean using UTF-8 strings for
function parameter names, and, for all declarations names.  But that
is too much for worfk too little gain for now.  The great majority of
the binaries we are dealing with are still using ASCII for declaration
names.

The patch also introduces a new test harness that runs "abidw
--abidiff" on a bunch of input binaries.  This harness runs over the
binaries that were submitted in this bug report.

	* include/abg-tools-utils.h (string_is_ascii): Declare new
	function ...
	* src/abg-tools-utils.cc (string_is_ascii): ... and define it.
	* src/abg-writer.cc (write_function_type): Escape forbidden XML
	characters in function type names.
	* src/abg-dwarf-reader.cc (build_function_type):  If a parameter
	name is not ascii, drop it on the floor.
	* tests/data/test-types-stability/pr19139-DomainNeighborMapInst.o:
	New test input binary.
	* tests/data/test-types-stability/pr19202-libmpi_gpfs.so.5.0:
	Likewise.
	* tests/data/Makefile.am: Add the new binaries above to the build
	system.
	* tests/test-types-stability.cc: New test harness.
	* tests/Makefile.am: Add the new test harness to the build system.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2015-11-05 16:40:22 +01:00
Ondrej Oprala
fcea5dffce Parallelize test read-dwarf.
* tests/Makefile.am: Link runtestreaddwarf with libpthread.
	* tests/test-read-dwarf.cc (main) Create worker threads corresponding
	to the number of CPUs online, add a "--no-parallel" option and move
	the main loop...
	(handleInOutSpec) ...here.

Signed-off-by: Ondrej Oprala <ooprala@redhat.com>
2015-10-07 11:07:58 +02:00
Dodji Seketeli
8e05364ac5 Remove duplicated runtestreaddwarf test
* tests/Makefile.am: Remove one copy of the runtestreaddwarf test
	that is present twice.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2015-09-21 15:23:14 +02:00
Dodji Seketeli
4fb1cb6263 Re-arrange some regression tests order
runtestreaddwarf and runtestcanonicalizetypes.sh are now the tests
which takes the most time.  Run them at the beginning.

	* tests/Makefile.am: Run runtestreaddwarf and
	runtestcanonicalizetypes at the beginning.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2015-09-02 15:33:27 +02:00
Sinny Kumari
260b92f5df Add regression tests for abipkgdiff tool
Add tests for the abipkgdiff tool.  The tests runs abipkgdiff on RPM
packages. RPMs for test data are taken from Fedora koji build with
build id - 106158 and 648058

	* tests/Makefile.am: Build new runtestdiffpkg regression test
	* tests/data/Makefile.am: Add new test files to source
	* tests/data/test-diff-pkg/dbus-glib-0.104-3.fc23.x86_64.rpm:
	Test data for abipkgdiff tool
	* tests/data/test-diff-pkg/dbus-glib-0.80-3.fc12.x86_64.rpm: Likewise
	* tests/data/test-diff-pkg/dbus-glib-debuginfo-0.104-3.fc23.x86_64.rpm:
	Likewise
	* tests/data/test-diff-pkg/dbus-glib-debuginfo-0.80-3.fc12.x86_64.rpm:
	Likewise
	* tests/data/test-diff-pkg/test-rpm-report-0.txt: Expected test output
	* tests/data/test-diff-pkg/test-rpm-report-1.txt: Likewise
	* tests/data/test-diff-pkg/test-rpm-report-2.txt: Likewise
	* tests/data/test-diff-pkg/test-rpm-report-3.txt: Likewise
	* tests/data/test-diff-pkg/test-rpm-report-4.txt: Likewise
	* tests/test-diff-pkg.cc: New file

Signed-off-by: Sinny Kumari <sinny@redhat.com>
2015-07-17 10:10:21 +02:00
Dodji Seketeli
088f0778bc Build libabigail tests with position-independent code
Like what we just did for libabigail tools, build the non-regression
tests with the -fPIC option to please the Fedora Rawhide builds.

	* tests/Makefile.am: Add -fPIC to the compile flags.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2015-06-07 17:01:52 +02:00
Dodji Seketeli
8b28d171c3 Canonicalize types either early or late after TU reading
While trying to diff two identical files (abidiff foo.so foo.so) it
appeared that canonicalizing types during e.g, the DWARF reading
process was leading to subtle errors because it's extremely hard to
know when a type is complete.  That is, during the building of a class
type C, a pointer to C can be built before C is complete.  Worse, even
after reading the DIE (from DWARF) of class C, there can be DIE seen
later in the translation unit that modifies type C.  In these late
cases, one needs to wait -- not only until C is fully built, but also
sometimes, after the translation unit is fully built -- to
canonicalize C and then the pointer to C.  This kind of things.

So now there are two possible points in time when canonicalization of
a type can happen.  It can happen early, when the type is built.  This
is the case for basic types and composite types for which all
sub-types are canonicalized already.  It can happen late, right after
we've finished reading the debug info for the current translation
unit.

So this patch fixes the IR traversal and uses that to walk the
translation unit (or even types) after it's built.  It does away with
the first attempt to perform early canonicalizing only.

The patch also handles type canonicalizing while reading xml-abi
format.

	* include/abg-fwd.h (is_class_type)
	(type_has_non_canonicalized_subtype): Declare new functions.
	(is_member_type): Remove the overload that takes a decl_base_sptr.
	It's superfluous.  We just need the one that takes a
	type_base_sptr.
	* include/abg-ir.h (translation_unit::{is_constructed,
	set_is_constructed}): Add new methods.
	(class_decl::has_virtual_member_functions): Likewise.
	(class decl_base): Makes it virtually inherit ir_traversable_base.
	(class type_base): Make this virtually inherit traversable_base
	too.
	(type_base::canonicalize): Renamed enable_canonical_equality
	into this.
	(type_base::traverse): Declare new virtual method.
	(canonicalize): Renamed enable_canonical_equality into this.
	(scope_type_decl::traverse): Declare new virtual method.
	(namespace_decl::get_pretty_representation): Declare new virtual
	method.
	(function_type::traverse): Likewise.
	(class_decl::base_spec::traverse): Likewise.
	(ir_node_visitor::visit): Remove the overloads and replace each of
	them with a pair of ...
	(ir_node_visitor::{visit_begin, visit_end}): ... of these.
	* include/abg-traverse.h (traversable_base::visiting): New
	method.
	(traversable_base::visiting_): New data member.
	(traversable_base::traversable_base): New constructor.
	* src/abg-ir.cc ({scope_decl, type_decl, namespace_decl,
	qualified_type_def, pointer_type_def, reference_type_def,
	array_type_def, enum_type_decl, typedef_decl, var_decl,
	function_decl, function_decl::parameter, class_decl,
	class_decl::member_function_template,
	class_decl::member_class_template, function_tdecl,
	class_tdecl}::traverse): Fix this to properly set the
	traversable_base::visiting_ flag and to reflect the new signatures
	of the ir_node_visitor methods.
	({type_base, scope_type_decl, function_type,
	class_decl::base_spec}::traverse): New method.
	(type_base::get_canonical_type_for): Handle the case of the type
	already having a canonical type.  Properly hash the type using the
	dynamic type hasher.  Look through declaration-only classes to
	consider the definition of the class instead.  Fix logic to have a
	single pointer of return, to ease debugging.
	(canonicalize): Renamed enable_canonical_equality into this.
	(namespace_decl::get_pretty_representation): Define new method.
	(ir_node_visitor::visit): Replace each of these overloads with a
	pair of visit_begin/visit_end ones.
	(translation_unit::priv::is_constructed_): New data member.
	(translation_unit::priv::priv): Initialize it.
	(translation_unit::{is_constructed, set_is_constructed}): Define
	new methods.
	(is_member_type(const decl_base_sptr)): Remove.
	(is_class_type(decl_base *d)): Define new function.
	(class_decl::has_virtual_member_functions): Define new method.
	(equals(const class_decl&, const class_decl&, change_kind*)): If
	the containing translation unit is not constructed yet, do not
	take virtual member functions in account when comparing the
	classes.  This is because when reading from DWARF, there can be
	DIEs that change the number of virtual member functions after the
	DIE of the class.  So one needs to start taking virtual members
	into account only after the translation unit has been constructed.
	(class non_canonicalized_subtype_detector): Define new type.
	(type_has_non_canonicalized_subtype): Define new function.
	* src/abg-corpus.cc (symtab_build_visitor_type::visit): Renamed
	this into symtab_build_visitor_type::visit_end.
	* src/abg-dwarf-reader.cc (die_type_map_type): New typedef.
	(die_class_map_type): This is now a typedef on a map of
	Dwarf_Off/class_decl_sptr.
	(read_context::{die_type_map_, alternate_die_type_map_,
	types_to_canonicalize_, alt_types_to_canonicalize_}): New data
	members.
	(read_context::{associate_die_to_decl,
	associate_die_to_decl_primary}): Make these methods public.
	(read_context::{associate_die_to_type,
	lookup_type_from_die_offset, is_wip_class_die_offset,
	types_to_canonicalize, schedule_type_for_canonicalization}):
	Define new methods.
	(build_type_decl, build_enum_type)
	(build_class_type_and_add_to_ir, build_qualified_type)
	(build_pointer_type_def, build_reference_type, build_array_type)
	(build_typedef_type, build_function_decl): Do not canonicalize
	types here.
	(maybe_canonicalize_type): Define new function.
	(build_ir_node_from_die): Take a new flag that says if the ir node
	is a member type/function or not. Early-canonicalize base types.
	Canonicalize composite types that have only canonicalized
	sub-types.  Schedule the other types for late canonicalizing.  For
	class types, early canonicalize those that are non-member types,
	that are fully constructed and that have only canonicalized
	sub-types.  Adjust to the new signature of build_ir_node_from_die.
	(get_scope_for_die, build_namespace_decl_and_add_to_ir)
	(build_qualified_type, build_pointer_type_def)
	(build_reference_type, build_array_type, build_typedef_type)
	(build_var_decl, build_function_decl): Adjust for the new
	signature of build_ir_node_from_die.
	(build_translation_unit_and_add_to_ir): Likewise.  Perform the
	late canonicalizing of the types that have been scheduled for
	that.
	(build_class_type_and_add_to_ir): Return a class_decl_sptr, not a
	decl_base_sptr.  Adjust for the new signature of
	build_ir_node_from_die.  Early canonicalize member types that are
	created and added to a given class, or schedule them for late
	canonicalizing.
	* src/abg-reader.cc (class read_context::{m_wip_classes_map,
	m_types_to_canonicalize}): New data members.
	(read_context::{clear_types_to_canonicalize,
	clear_wip_classes_map, mark_class_as_wip, unmark_class_as_wip,
	is_wip_class, maybe_canonicalize_type,
	schedule_type_for_late_canonicalizing,
	perform_late_type_canonicalizing}): Add new method definitions.
	(read_context::clear_per_translation_unit_data): Call
	read_context::clear_types_to_canonicalize().
	(read_translation_unit_from_input): Call
	read_context::perform_late_type_canonicalizing() at the end of the
	function.
	(build_function_decl): Fix the function type canonicalizing (per
	translation) that was already in place.  Do the canonicalizing of
	these only when the type is fully built.  Oops.  This was really
	brokend.  Also, when the function type is constructed, consider it
	for type canonicalizing.
	(build_type_decl): Early canonicalize basic types.
	(build_qualified_type_decl, build_pointer_type_def)
	(build_pointer_type_def, build_reference_type_def)
	(build_array_type_def, build_enum_type_decl, build_typedef_decl):
	Handle the canonicalizing for these composite types: either early
	or late.
	(build_class_decl): Likewise.  Also, mark this class a 'being
	built' until it's fully built.  This helps the canonicalizing code
	to know that it should leave a class alone until it's fully built.
	* tests/test-ir-walker.cc (struct name_printing_visitor): Adjust
	to the visitor methods naming change.
	* configure.ac: Generate the tests/runtestcanonicalizetypes.sh
	testing script from tests/runtestcanonicalizetypes.sh.in.
	* tests/runtestcanonicalizetypes.sh.in: Add the template for the
	new runtestcanonicalizetypes.sh script that test for type
	canonicalizing.
	* tests/Makefile.am: Add the new runtestcanonicalizetypes.sh
	regression testing script to the build system.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2015-02-18 21:32:37 +01:00
Dodji Seketeli
b25f1bd7e7 Adjust archive-related code for the recent addition of tools_utils::*
What was in the abigail::tools namespace got recently moved in the
abigail::tools_unit namespace.  I forgot to adjust the client code
related to the archive support because that code is now compiled by
default on my main hacking box.  This patch fixes that.

	* tests/Makefile.am: tools/libtoolsutils.la is no more.
	* tests/test-write-read-archive.cc (main): Adjust.
	* tools/abiar.cc (extract_tus_from_archive): Likewise.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2015-01-13 11:02:10 +01:00
Dodji Seketeli
322b0e7769 Expose a new libabigail::tools_utils namespace
The utilities present in this namespace were previously living in
tools/abg-tools-utils.h and tools/abg-tools-utils.cc.  They were not
exported and were meant to be useful to the tools writting in the
tools/ directory.  I realized that these utilities might be useful to
clients of the libabigail library in general so I am making them
available generally.  Note that the initial name of the namespace was
libabigail::tools; so renaming it to libabigail::tools_utils required
that I adjust some client code.  I have also cleaned up the code,
interfaces and their apidoc a little bit.

	* include/abg-tools-utils.h: Moved tools/abg-tools-utils.h in
	here.  Renamed the namespace tools into tools_utils.  Inject
	std::ostream, std::istream, std::ifstream, and std::string types
	into the tools_utils namespace.  Adjust the function declarations
	accordingly.  Remove the useless dirname() function declaration.
	* include/Makefile.am: Add abg-tools-utils.h to the list of
	exported headers.
	* src/abg-tools-utils.cc: Moved tools/abg-tools-utils.cc in here.
	Renamed the namespace tools into tools_utils.
	(get_stat): Add apidoc.
	(is_dir): Cleanup apidoc.
	(dir_name); Cleanup parameter name.
	(guess_file_type): Cleanup parameter type.
	* src/Makefile.am: Add abg-tools-utils.cc to the list of exported
	headers.
	* tools/Makefile.am: Do not build the temporary library
	libtoolsutils.la anymore as abg-tools-utils.{h,cc} have moved out
	of this directory.
	* tools/abicompat.cc (parse_command_line, main): Adjust for tools
	-> tools_utils namespace change.
	* tools/abidiff.cc (parse_command_line, main): Likewise.
	* tools/abidw.cc (parse_command_line, main): Likewise.
	* tools/abilint.cc (parse_command_line, main): Likewise.
	* tests/test-abicompat.cc (main): Adjust for tools -> tools_utils
	namespace change.
	* tests/test-abidiff.cc (main): Likewise.
	* tests/test-alt-dwarf-file.cc (main): Likewise.
	* tests/test-core-diff.cc (main): Likewise.
	* tests/test-diff-dwarf.cc (main): Likewise.
	* tests/test-diff-filter.cc (main): Likewise.
	* tests/test-diff-suppr.cc (main): Likewise.
	* tests/test-lookup-syms.cc (main): Likewise.
	* tests/test-read-dwarf.cc (main): Likewise.
	* tests/test-read-write.cc (main): Likewise.
	* tests/Makefile.am: Do not reference the libtoolsutils.la private
	library anymore.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2015-01-08 12:28:14 +01:00
Jan Engelhardt
112432bbd2 Fix conditional build wrt zip archives and cx11
Revert 1b4e3844e9. Automake does support
nested conditionals just fine.  One just has to use the += operator.

This also fixes the problem:

	./configure: line 15878: ENABLE_ZIP_ARCHIVE_AND_CXX11:
	command not found

caused by bad syntax:

	ENABLE_ZIP_ARCHIVE_AND_CXX11 = yes

(Variable assignments must not use spaces around '=').

	* configure.ac: remove (broken) assignment to the
	ENABLE_ZIP_ARCHIVE_AND_CXX11 variable
	* Makefile.am: replace variable assignments to
	ZIP_ARCHIVE_TESTS_FIRST_PART, ZIP_ARCHIVE_TESTS_SECOND_PART
	by ZIP_ARCHIVE_TESTS using the "+=" automake operator.
	Likewise for CXX11_TESTS.

Signed-off-by: Jan Engelhardt <jengelh@inai.de>
Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2014-12-10 14:35:55 +01:00
Dodji Seketeli
ef7e71febf Initial implementation of the abicompat tool
Given an application A that links to a shared library L of version V
denoted L(V) and a subsequent version of that library denoted L(V+P),
the 'abicompat' tool tells the user if L(V+P) is still ABI compatible
with L(V+P).  And if it is not, abicompat gives a reports that shows
the differences between L(V) and L(V+P) that makes L(V+P)
ABI-incompatible with A.

The source code of this tool is in the tools/abicompat.cc source
file.  To support this new tool, this commit changes the comparison
engine to optionally avoid showing added symbols that were not
referenced by any debug info.  It changes the ABI corpus type to allow
the specification of a list of variables and functions symbols to keep
(and drop all other functions and variables which have other symbols
on the floor even before starting to compare the two libraries).

This is how the abicompat tool itself works.  It basically compares
L(V) and L(V+P) but it only looks at their exported functions and
variables which symbols are undefined in application A.  If the list
of exported and defined variables and functions of L(V) whose symbols
are undefined in A equals that of L(V+P) (including the sub-types of
these variables and functions) A is still compatible with L(V+P).
Otherwise, they might not be compatible depending on the kind of
differences that are found.

	* include/abg-comparison.h
	(diff_context::show_added_symbols_unreferenced_by_debug_info):
	Declare new accessors.
	(corpus_diff::{deleted_variables,
	deleted_unrefed_function_symbols,
	deleted_unrefed_variable_symbols,
	apply_filters_and_suppressions_before_reporting}): Declare new
	methods.
	(corpus_diff::diff_stats): Declare this new type.  Actually this
	was previously corpus_diff::priv::diff_stats, which was a hidden
	internal type..  We are moving it here, in the external API so
	that client code can have more information about changes
	statistics.  Change all the previously publicly accessible data
	members into accessor functions.
	* src/abg-comparison.cc (class corpus_diff::diff_stats::priv): New
	type.
	(diff_context::priv::show_added_syms_unreferenced_by_di_): New
	data member.
	(diff_context::priv::priv): Adjust.
	(diff_context::show_added_symbols_unreferenced_by_debug_info):
	Define this new method.
	(corpus_diff::priv::emit_diff_stats):  Do not show the diff stat
	if the only changes is added function or variables symbols and if
	we were instructed to not show added symbols.
	(corpus_diff::priv::{diff_stats_, filters_and_suppr_applied_}):
	New data members.
	(corpus_diff::priv::priv): Initialize the
	filters_and_suppr_applied_ data member.
	(corpus_diff::priv::diff_stats): Move this type to
	corpus_diff::diff_stats.
	(corpus_diff::priv::{apply_filters_and_compute_diff_stats,
	emit_diff_stats}): Adjust.
	(corpus_diff::apply_filters_and_suppressions_before_reporting):
	Define new member function.
	(corpus_diff::report): Use the new
	apply_filters_and_suppressions_before_reporting() function, rather
	than applying the filters and suppressions by ourselves.  Also
	adjust to the use the accessors of the new corpus_diff::diff_stats
	type.
	(corpus_diff::{deleted_variables,
	deleted_unrefed_function_symbols,
	deleted_unrefed_variable_symbols}): Define new accessors.
	(corpus_diff::diff_stats::{diff_stats, num_func_removed,
	num_func_added, num_func_changed, num_func_filtered_out,
	net_num_func_changed, num_vars_removed, num_vars_added,
	num_vars_changed, num_vars_filtered_out, net_num_vars_changed,
	num_func_sym_removed, num_func_syms_added, num_var_syms_removed,
	num_var_syms_added}): Define new member functions.
	* include/abg-corpus.h (corpus::{get_sym_ids_of_fns_to_keep,
	get_sym_ids_of_vars_to_keep}): Declare new methods.
	* src/abg-corpus.cc (corpus::priv::{sym_id_fns_to_keep,
	sym_id_vars_to_keep}): Added data members.
	(symtab_build_visitor_type::{unrefed_fun_symbols,
	unrefed_var_symbols, sym_id_fns_to_keep, sym_id_vars_to_keep}):
	Added new data members.
	(symtab_build_visitor_type::symtab_build_visitor_type): Take two
	additional parameters for the function and variable symbol ids to
	keep.
	(symtab_build_visitor_type::add_fn_to_wip_fns): Take the function
	symbols to keep in account when building the exported symbol
	table.
	(symtab_build_visitor_type::add_var_to_wip_vars): Likewise, take
	the variable symbols to keep in account when building the exported
	symbol table.
	(corpus::priv::build_public_decl_table): Adjust the initialization
	of the visitor that walks the ABI artifacts to build the exported
	symbol table to know take a list of function/variable symbols to
	keep.
	(corpus::priv::build_unreferenced_symbols_tables): Ensure that the
	public table of functions/variables is built before doing the work
	of this function.  Also, if a list of variable/function symbols to
	keep is given, drop all symbols that are not in that list on the
	floor.
	(corpus::{get_sym_ids_of_fns_to_keep,
	get_sym_ids_of_vars_to_keep}): Define new accessors.
	* tools/abicompat.cc: New abicompat tool.
	* doc/manuals/abicompat.rst: New documentation source for
	abicompat.
	* doc/manuals/libabigail-tools.rst: Add an entry for the abicompat
	doc.
	* tests/test-abicompat.cc: New test harness for the 'abicompat'
	tool.
	* tests/Makefile.am: Build the runtestabicompat test harness and
	add it to the list of tests harnesses that are run by make check.
	* tests/data/test-abicompat/libtest0-fn-changed-libapp-v0.so: New
	test input.
	* tests/data/test-abicompat/libtest0-fn-changed-libapp-v1.so: Likewise.
	* tests/data/test-abicompat/test0-fn-changed-app: Likewise.
	* tests/data/test-abicompat/test0-fn-changed-0.suppr: Likewise
	* tests/data/test-abicompat/test0-fn-changed-report-0.txt: Likewise.
	* tests/data/test-abicompat/test0-fn-changed-report-1.txt: Likewise.
	* tests/data/test-abicompat/test0-fn-changed-app.cc: Likewise.
	* tests/data/test-abicompat/test0-fn-changed-libapp.h: Likewise.
	* tests/data/test-abicompat/test0-fn-changed-libapp-v0.cc: Likewise.
	* tests/data/test-abicompat/test0-fn-changed-libapp-v1.cc: Likewise.
	* tests/data/test-abicompat/libtest1-fn-removed-v0.so: Likewise.
	* tests/data/test-abicompat/libtest1-fn-removed-v1.so: Likewise.
	* tests/data/test-abicompat/test1-fn-removed-app: Likewise.
	* tests/data/test-abicompat/test1-fn-removed-app.cc: Likewise.
	* tests/data/test-abicompat/test1-fn-removed-report-0.txt: Likewise.
	* tests/data/test-abicompat/test1-fn-removed-v0.cc: Likewise.
	* tests/data/test-abicompat/test1-fn-removed-v1.cc: Likewise.
	* tests/data/test-abicompat/libtest2-var-removed-v0.so: Likewise.
	* tests/data/test-abicompat/libtest2-var-removed-v1.so: Likewise.
	* tests/data/test-abicompat/test2-var-removed-app: Likewise.
	* tests/data/test-abicompat/test2-var-removed-app.cc: Likewise.
	* tests/data/test-abicompat/test2-var-removed-report-0.txt: Likewise.
	* tests/data/test-abicompat/test2-var-removed-v0.cc: Likewise.
	* tests/data/test-abicompat/test2-var-removed-v1.cc: Likewise.
	* tests/data/test-abicompat/libtest3-fn-removed-v0.so: Likewise.
	* tests/data/test-abicompat/libtest3-fn-removed-v1.so: Likewise.
	* tests/data/test-abicompat/test3-fn-removed-app: Likewise.
	* tests/data/test-abicompat/test3-fn-removed-app.cc: Likewise.
	* tests/data/test-abicompat/test3-fn-removed-report-0.txt: Likewise.
	* tests/data/test-abicompat/test3-fn-removed-v0.cc: Likewise.
	* tests/data/test-abicompat/test3-fn-removed-v1.cc: Likewise.
	* tests/data/test-abicompat/test3-fn-removed-version-script-0 Likewise.:
	* tests/data/test-abicompat/test3-fn-removed-version-script-1: Likewise.
	* tests/data/Makefile.am: Add the new test inputs above to the
	source distribution.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2014-12-05 15:43:31 +01:00
Dodji Seketeli
5c19aa1061 Make tests/data directory have its own Makefile
On RHEL 6, make distcheck was trying to compile the C++ files that are
in tests/data.  Having a dedicated tests/data Makefile.am which only
put the data files into an EXTRA_DIST variable fixes that.

	* configure.ac(AC_CONFIG_FILE): Generate a new tests/data/Makefile
	file.
	* tests/Makefile.am: Link the data/ sub-directory from here.  Move
	the EXTRA_DIST definition to ...
	* tests/data/Makefile.am: ... this new file here.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2014-11-20 11:26:30 +01:00
Dodji Seketeli
d259f37ca3 Hmh, finally EXTRA_DIST was just fine
* tests/Makefile.am: Put EXTRA_DIST back.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2014-11-20 10:53:58 +01:00
Dodji Seketeli
a6422da0a2 Make sure we don't try to build test data
* tests/Makefile.am: Replace EXTRA_DIST with noinst_DATA.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2014-11-19 21:20:27 +01:00
Dodji Seketeli
d09799377a Add loads of forgotten test data files to source distribution
* tests/Makefile.am: Add lots of test data file that were
	forgotten and then revealed by running make distcheck.  Also fix
	some wrong paths to test data files.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2014-11-19 17:31:34 +01:00
Dodji Seketeli
1b4e3844e9 Nested automake conditionals don't work
* configure.ac (ENABLE_ZIP_ARCHIVE_AND_CXX11): Define this
	automake condition variable that is true if both the zip archive
	and c++11 features are enabled.  This is important to know if the
	test runtestdot is going to be compiled.  That test needs both
	c++11 and the zip archive features.
	* tests/Makefile.am: Do not nest automake conditional statements.
	It does not work.  Rather, use the new
	ENABLE_ZIP_ARCHIVE_AND_CXX11 condition variable.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2014-11-19 10:23:41 +01:00
Dodji Seketeli
c134ed84c7 If c++11 is disable do not execute the runtestdot test
* tests/Makefile.am: runtestdot should not be executed if c++11 is
	disabled.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2014-11-19 09:17:13 +01:00
Dodji Seketeli
a206dd881d Pass -std=gnu++11 to the compiler when --enable-cxx11 for tests
* tests/Makefile.am: Pass -std=gnu++11 to the compiler when
	--enable-cxx11 has been used.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2014-11-05 10:53:00 +01:00
Dodji Seketeli
1082520383 Make the use of a C++-11 compiler optional
* configure.ac: Define a new --enable-cxx11 switch to control the
	use of the C++-11 compiler.  Define a WITH_CXX11 C macro and an
	automake ENABLE_CXX11 variable.
	* config.h.in: Initialize the new WITH_CXX11 C macro.
	* src/Makefile.am: Include the files coded in C++-11 only if the
	ENABLE_CXX11 automake variable is defined.
	* tests/Makefile.am: Likewise, build the runtestsvg test program
	only if C++-11 usage is enabled.
	* include/abg-diff-utils.h (class d_path_vec): Remove useless
	usage of the 'typename' keyword.
	* include/abg-fwd.h (is_enum_type): Renamed is_enum into this,
	because of a name clash with a tr1 function when not using C++-11.
	(is_pointer_type): Likewise, renamed is_pointer into this because
	of a name clash with a tr1 function when not using C++-11.
	* src/abg-comp-filter.cc (has_harmless_name_change): Adjust for
	the is_enum -> is_enum_type change.
	* src/abg-comparison.cc (type_suppression::suppresses_diff):
	Likewise.
	(class function_suppression::priv): Add a missing "class" keyword
	in friend declaration.
	(diff_context::diff_has_been_traversed)
	(diff_context::mark_diff_as_traversed): Do not use the C++-11
	specific type uintptr_t.
	* src/abg-dwarf-reader.cc (create_default_dwfl): Do not use
	designated initializers.  Sigh.  This is handy though.
	(expr_result::abs): Cast the argument of std::abs to avoid
	ambiguous call.
	(finish_member_function_reading): Adjust for the is_pointer ->
	is_pointer_type renaming.
	* src/abg-hash.cc (scope_decl:#️⃣:operator)
	(class_decl::base_spec:#️⃣:operator)
	(type_composition:#️⃣:operator): Use std::tr1::hash string,
	rather than the C++-11 specific std::hash function.
	* src/abg-ini.cc (read_sections, write_sections): Make
	std::ifstream constructor take a const char* rather than a string.
	* src/abg-ir.cc (is_enum_type, is_pointer_type): Renamed is_enum
	into is_enum_type and is_pointer into is_pointer_type.
	* src/abg-writer.cc (write_translation_unit): Remove useless
	typename keyword.  Make ofstream take a const char* rather than a
	string.
	(write_namespace_decl): Remove useless typename keyword.
	(write_corpus_to_native_xml_file): Make ofstream take a const
	char* rather than a string.
	* tests/test-abidiff.cc (main): Make ofstream take a const char*
	rather than a string.
	* tests/test-diff-dwarf.cc (main): Likewise.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2014-11-05 10:45:07 +01:00
Dodji Seketeli
2e896ce107 Initial support for variable suppressions
* include/abg-comparison.h (variable_suppression_sptr)
	(variable_suppressions_type): New convenience typedefs.
	(class variable_suppression): Declare new type.
	* src/abg-comparison.cc (is_var_diff): New predicate.
	(read_variable_suppression): Define new static function.
	(class variable_suppression::priv): Define type for the private
	data of the variable_suppression type.
	(variable_suppression::{variable_suppression,
	~variable_suppression, get_name, set_name, get_name_regex_str,
	set_name_regex_str, get_symbol_name, set_symbol_name,
	get_symbol_name_regex_str, set_symbol_name_regex_str,
	get_symbol_version, set_symbol_version,
	get_symbol_version_regex_str, set_symbol_version_regex_str,
	get_type_name, set_type_name, get_type_name_regex_str,
	set_type_name_regex_str, suppresses_diff}): Define new member
	functions for the variable_suppression type.
	* tests/data/test-diff-suppr/libtest7-var-suppr-v0.so: Add new
	test input.
	* tests/data/test-diff-suppr/libtest7-var-suppr-v1.so: Likewise.
	* tests/data/test-diff-suppr/test7-var-suppr-1.suppr: Likewise.
	* tests/data/test-diff-suppr/test7-var-suppr-2.suppr: Likewise.
	* tests/data/test-diff-suppr/test7-var-suppr-3.suppr: Likewise.
	* tests/data/test-diff-suppr/test7-var-suppr-4.suppr: Likewise.
	* tests/data/test-diff-suppr/test7-var-suppr-5.suppr: Likewise.
	* tests/data/test-diff-suppr/test7-var-suppr-6.suppr: Likewise.
	* tests/data/test-diff-suppr/test7-var-suppr-7.suppr: Likewise.
	* tests/data/test-diff-suppr/test7-var-suppr-8.suppr: Likewise.
	* tests/data/test-diff-suppr/test7-var-suppr-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test7-var-suppr-report-1.txt: Likewise.
	* tests/data/test-diff-suppr/test7-var-suppr-report-2.txt: Likewise.
	* tests/data/test-diff-suppr/test7-var-suppr-report-3.txt: Likewise.
	* tests/data/test-diff-suppr/test7-var-suppr-report-4.txt: Likewise.
	* tests/data/test-diff-suppr/test7-var-suppr-report-5.txt: Likewise.
	* tests/data/test-diff-suppr/test7-var-suppr-report-6.txt: Likewise.
	* tests/data/test-diff-suppr/test7-var-suppr-report-7.txt: Likewise.
	* tests/data/test-diff-suppr/test7-var-suppr-report-8.txt:
	Likewise.
	* tests/data/test-diff-suppr/test7-var-suppr-version-script: Likewise.
	* tests/data/test-diff-suppr/test7-var-suppr-v0.cc: Source code
	for the librairie above.
	* tests/data/test-diff-suppr/test7-var-suppr-v1.cc: Source code
	for the librairie above.
	* tests/Makefile.am: Add the new test input data to the source
	distribution.
	* tests/test-diff-suppr.cc: Update to make this harness to run
	over the new test input above.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2014-11-01 12:22:08 +01:00
Dodji Seketeli
23772b3f8d Initial support for function suppressions
* include/abg-comparison.h (enum visiting_kind): Change the
	meaning of this.  It was to determine if traversal was to be done
	in a pre or post manner.  But with the recent addition of
	diff_node_visitor::visit_{begin,end}() notifiers, the pre/post
	handling is taken care of in a different way.  So now the meaning
	of this enum is changed to handle whether diff node children
	should be visited or not.  So the enumerators are now
	DEFAULT_VISITING_KIND, and SKIP_CHILDREN_VISITING_KIND.  And it's
	a bit-field.
	(operator{&,~}): Declare more bit manipulation operators for the
	enum visiting_kind.
	(function_suppression_sptr, function_suppressions_type): New
	typedefs.
	(function_suppression, function_suppression::parameter_spec):
	Declare new types.
	(read_function_suppressions): Declare new function.
	(diff_node_visitor::diff_node_visitor): Adjust for the enum
	visiting_kind change.  Value-initialize the visiting_kind_ data
	member.
	* src/abg-comparison.cc (operator{&,~}): Define these operators
	for enum visiting_kind.
	(read_type_suppressions): Forward declare this static function.
	(read_function_suppression, read_parameter_spec_from_string):
	Define new static functions.
	(read_suppressions): Update to read function suppressions too,
	using the new read_function_suppression function above.
	(class function_suppression::parameter_spec::priv): Define new
	type.
	(function_suppression::parameter_spec::*): Define the member
	functions of the new function_suppression::parameter_spec type.
	(class function_suppression::priv): Define new type.
	(function_suppression::*): Define the member functions of the new
	function_suppression type.
	(diff::traverse): There is no more {PRE,POST}_VISITING_KIND
	enumerator.  So nuke the code that was dealing with it.
	(redundancy_marking_visitor::skip_children_nodes_): New data
	member flag.
	(redundancy_marking_visitor::visit_begin): If the current diff
	node is not be reported (is filtered out), do not bother visit its
	children nodes for the purpose of marking redundant nodes.  So use
	the new skip_children_nodes_ flag above to know we are in that case.
	(redundancy_marking_visitor::visit_end): Unset the new
	skip_children_nodes_ flag above when appropriate.
	* include/abg-fwd.h (is_function_decl): Declare new function.
	* include/abg-ir.h
	(function_type::get_parm_at_index_from_first_non_implicit_parm):
	Declare new member function.
	* src/abg-ir.cc (is_function_decl): Define new function.
	(function_type::get_parm_at_index_from_first_non_implicit_parm):
	Define new member function.
	* src/abg-comp-filter.cc (apply_filter): Adjust for the enum
	visiting_kind change.  No need to set it for filters anymore
	* doc/suppr-doc.txt: Update examples of function suppression.
	* doc/manuals/libabigail-concepts.rst: Update the manual for the
	function suppression addition.
	* tests/data/test-diff-suppr/libtest5-fn-suppr-v0.so: New test input.
	* tests/data/test-diff-suppr/libtest5-fn-suppr-v1.so: New test input.
	* tests/data/test-diff-suppr/libtest6-fn-suppr-v0.so: New test input.
	* tests/data/test-diff-suppr/libtest6-fn-suppr-v1.so: New test input.
	* tests/data/test-diff-suppr/test5-fn-suppr-0.suppr: New test input.
	* tests/data/test-diff-suppr/test5-fn-suppr-1.suppr: New test input.
	* tests/data/test-diff-suppr/test5-fn-suppr-2.suppr: New test input.
	* tests/data/test-diff-suppr/test5-fn-suppr-3.suppr: New test input.
	* tests/data/test-diff-suppr/test5-fn-suppr-4.suppr: New test input.
	* tests/data/test-diff-suppr/test5-fn-suppr-report-0.txt: New test input.
	* tests/data/test-diff-suppr/test5-fn-suppr-report-1.txt: New test input.
	* tests/data/test-diff-suppr/test5-fn-suppr-report-2.txt: New test input.
	* tests/data/test-diff-suppr/test5-fn-suppr-report-3.txt: New test input.
	* tests/data/test-diff-suppr/test5-fn-suppr-report-4.txt: New test input.
	* tests/data/test-diff-suppr/test5-fn-suppr-report-5.txt: New test input.
	* tests/data/test-diff-suppr/test5-fn-suppr-v0.cc: Source code for
	new test input.
	* tests/data/test-diff-suppr/test5-fn-suppr-v1.cc: Source code for
	new test input.
	* tests/data/test-diff-suppr/test6-fn-suppr-0.suppr: New test input.
	* tests/data/test-diff-suppr/test6-fn-suppr-1.suppr: New test input.
	* tests/data/test-diff-suppr/test6-fn-suppr-2.suppr: New test input.
	* tests/data/test-diff-suppr/test6-fn-suppr-3.suppr: New test input.
	* tests/data/test-diff-suppr/test6-fn-suppr-report-0.txt: New test input.
	* tests/data/test-diff-suppr/test6-fn-suppr-report-1.txt: New test input.
	* tests/data/test-diff-suppr/test6-fn-suppr-report-2.txt: New test input.
	* tests/data/test-diff-suppr/test6-fn-suppr-report-3.txt: New test input.
	* tests/data/test-diff-suppr/test6-fn-suppr-report-4.txt: New test input.
	* tests/data/test-diff-suppr/test6-fn-suppr-v0.cc: Source code for
	new test input.
	* tests/data/test-diff-suppr/test6-fn-suppr-v1.cc: Source code for
	new test input.
	* tests/data/test-diff-suppr/test6-fn-suppr-version-script: New
	test input.
	* tests/Makefile.am: Add the new files above to source
	the distribution.
	* tests/test-diff-suppr.cc (in_out_specs): Add the test inputs
	above to the list of tests to be run by this harness.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2014-10-28 17:36:32 +01:00
Dodji Seketeli
f44110b326 Support comparing symbols not referenced by debug info
* doc/manuals/abidiff.rst: Adjust intro to mention that w/o debug
	info, abidiff now works but just report about added/removed
	symbols.  Add documentation about the new
	--no-unreferenced-symbols option.
	* include/abg-comparison.h (string_elf_symbol_map): New typedef.
	(diff_context::show_symbols_unreferenced_by_debug_info): Declare
	new accessors.
	* src/abg-comparison.cc
	(diff_context::priv::show_syms_unreferenced_by_di_): New data
	member.
	(diff_context::priv::priv): Adjust.
	(diff_context::show_symbols_unreferenced_by_debug_info): Implement
	these accessors.
	(corpus_diff::priv::{unrefed_fn_syms_edit_script_,
	unrefed_var_syms_edit_script_, added_unrefed_fn_syms_,
	deleted_unrefed_fn_syms_, added_unrefed_var_syms_,
	deleted_unrefed_var_syms_}): New data members.
	(corpus_diff::priv::diff_stats::{num_func_syms_removed,
	num_func_syms_added, num_var_syms_removed, num_var_syms_added}):
	New data members.
	(corpus_diff::priv::diff_stats::diff_stats): Adjust.
	(corpus_diff::ensure_lookup_tables_populated): Populate lookup
	tables for added/removed symbols that are not referenced by any
	debug info.
	(corpus_diff::priv::apply_filters_and_compute_diff_stats): Compute
	stats for the added/removed symbols not referenced by any debug
	info.
	(corpus_diff::priv::emit_diff_stats): Emit stats about
	added/removed symbols that are not referenced by any debug info.
	(corpus_diff::length): Adjust to take in account added/removed
	symbols not referenced by any debug info.
	(show_linkage_name_and_aliases): New static function.
	(corpus_diff::report): When emitting a symbol name, emit its
	version too, and tell if it aliases other symbols.  Avoid emitted
	extra new lines.  Report added/removed symbols not referenced by
	any debug info.
	(compute_diff): In the overload for corpus_sptr, compute the diffs
	for symbols not referenced by debug info.
	* include/abg-corpus.h
	(corpus::get_unreferenced_{function,variable}_symbols): Declare
	new member functions.
	* src/abg-corpus.cc (corpus_priv::{unrefed_fun_symbols,
	unrefed_var_symbols}): New data members.
	(corpus_priv::build_unreferenced_symbols_tables): Define new
	member function.
	(struct comp_elf_symbols_functor): New functor.
	(corpus::is_empty): Adjust to take in account added/removed
	symbols not referenced by debug info.
	(corpus::{get_unreferenced_function_symbols,
	corpus::get_unreferenced_variable_symbols}): Define these
	accessors.
	* include/abg-dwarf-reader.h (enum status): Transform this into
	bitfields.  Add a STATUS_UNKNOWN value that has the value 0.
	(operator|(status, status), operator&(status, status))
	(operator|=(status&, status), operator&=(status, status)): New
	bit-wise operators to manipulate instances of the status bit-field.
	* src/abg-dwarf-reader.cc (get_version_for_symbol): Fix this to
	avoid returning garbage version sometimes.
	(read_debug_info_into_corpus): Fix this to return a non-null but
	empty corpus_sptr when there is no debug info available.
	(operator|(status, status), operator&(status, status))
	(operator|=(status&, status), operator&=(status, status)): Define
	these new bitwise operators to manipulate instances of the status
	bit-field.
	(read_corpus_from_elf): Now that the abigail::dwarf_reader::status
	is a bit-field, set it to reflect if debug info and/or symbol
	tables have been found.  Do not bail out if debug info hasn't been
	found.  Rather, keep going, and go look for symbols-only; this is
	a kind of operating in degraded mode.
	* include/abg-ir.h (elf_symbol::get_aliases_id_string): Add a flag
	that says if the current instance of elf_symbol should be included
	in the list of aliases or not.
	* src/abg-ir.cc (elf_symbol::get_aliases_id_string): Define it.
	* tests/data/test-diff-dwarf/test16-syms-only-v{0,1}.o: New test
	input.
	* tools/abidiff.cc
	(options::show_symbols_not_referenced_by_debug_info): New data
	member.
	(options:options): Adjust.
	(display_usage): Add an info string for the new
	--no-unreferenced-symbols command line option.
	(parse_command_line): Parse the new --no-unreferenced-symbols
	command line.
	(set_diff_context_from_opts): Set the diff_context according to
	the presence of --no-unreferenced-symbols.
	(main): Adjust for the fact that abigail::dwarf_reader::status is
	now a bit-field.
	* tools/abilint.cc (main): Adjust for the fact that
	abigail::dwarf_reader::status is now a bit-field..
	():
	* tests/data/test-diff-dwarf/test16-syms-only-report.txt: New test
	reference output.
	* tests/data/test-diff-dwarf/test16-syms-only-v{0,1}.cc: Source code
	for new test input.
	* tests/data/test-diff-dwarf/test17-non-refed-syms-v{0,1}.o: New
	test input.
	* tests/data/test-diff-dwarf/test17-non-refed-syms-v{0,1}.cc: New
	source code for test input.
	* tests/data/test-diff-dwarf/libtest18-alias-sym-v{0,1}.so: New
	test input.
	* tests/data/test-diff-dwarf/test18-alias-sym-report-0.txt:
	Reference output for new test input.
	* tests/data/test-diff-dwarf/test18-alias-sym-v{0,1}.cc: Source
	code for new test input.
	* tests/data/test-diff-dwarf/test18-alias-sym-version-script:
	Source code for new test input.
	* tests/Makefile.am: Add the new test materials to the source
	distribution.
	* tests/test-diff-dwarf.cc(in_out_specs): Add the new input tests
	above to the array of tests to run by this harness.
	(main): Emit empty reports for empty resulting diffs.
	* tests/data/test-diff-dwarf/test{0,8,9,12,14-inline-report,}-report.txt:
	Adjust.
	* tests/data/test-diff-filter/test{0,01,2,4,5,7,8,9,10,12,13,15-0,15-1}-report.txt:
	Likewise.
	* tests/data/test-diff-filter/test{19-enum,20-inline,}-report-0.txt:
	Likewise.
	* tests/data/test-diff-suppr/test0-type-suppr-report-{1,2}.txt:
	Likewise.
	* tests/data/test-diff-suppr/test{1,2}-typedef-suppr-report-1.txt:
	Likewise.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2014-10-22 23:04:40 +02:00
Dodji Seketeli
70cb9ba1ae Yet another fix to the DWARF method "static-ness" detection heuristic
* include/abg-fwd.h (is_pointer, is_qualified_type): Declare new
	functions.
	* src/abg-ir.cc (is_pointer, is_qualified_type): Implement these
	new functions.
	* src/abg-dwarf-reader.cc (finish_member_function_reading):
	Sometimes, the this pointer of a non-static method can point to a
	*qualified* version of its containing type.  I am seeing that when
	comparing libstdc++.so from RHEL 6.5 and RHEL 7.  Take that in
	account when trying to detect that the first parameter of a member
	function is the this pointer, and thus detect that the function is
	a non static member function.
	* tests/data/test-read-dwarf/test8-qualified-this-pointer.so.abi:
	New test input.
	* tests/data/test-read-dwarf/test8-qualified-this-pointer.so: New
	test input.
	* tests/data/test-read-dwarf/test8-qualified-this-pointer.cc:
	Source code of new test input.
	* tests/test-read-dwarf.cc: Update copyright year.
	(in_out_spec): Add the new test inputs to this array, so that this
	test harness runs on them.
	* tests/Makefile.am: Add the new test inputs to the source
	distribution.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2014-10-16 23:49:41 +02:00
Dodji Seketeli
4e07799f42 Properly propagate {REDUNDANT, SUPPRESSED}_CATEGORY wrt local changes
* src/abg-comparison.cc
	(suppression_categorization_visitor::visit_end): If a diff node
	carries local changes, then, even if all of its children node have
	been suppressed, this diff node shall not be categorized as
	suppressed by way of propagation.
	(redundancy_marking_visitor::visit_end): If a diff node carries
	local changes, then, even if all of its children nodes are
	redundant, this diff node shall not be categorized as being
	redundant by way of propagation.
	* tests/data/test-diff-suppr/libtest4-local-suppr-v{0,1}.so: New test
	inputs.
	* tests/data/test-diff-suppr/test4-local-suppr-0.suppr: Likewise.
	* tests/data/test-diff-suppr/test4-local-suppr-report-{0,1}.txt:
	Likewise.
	* tests/data/test-diff-suppr/test4-local-suppr-v{0,1}.{c,h}:
	Source code of the new tests inputs.
	* tests/Makefile.am: Add the new test material to the source
	distribution.
	* tests/test-diff-suppr.cc (in_out_spec): Run this test harness
	over the new test input above.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2014-10-13 17:44:44 +02:00
Dodji Seketeli
feea5df3fe Initial support for type suppressions
* include/abg-comparison.h (diff_category::SUPPRESSED_CATEGORY):
	New enumerator.
	(diff_category::{SIZE_OR_OFFSET_CHANGE_CATEGORY,
	VIRTUAL_MEMBER_CHANGE_CATEGORY): Update the enumerator values for
	these.
	(diff::EVERYTHING_CATEGORY): Adjust.
	(suppression_base, type_suppression): Declare new types.
	(suppression_ptr, suppressions_type, type_suppression_sptr)
	(type_suppressions_type): New typedefs.
	(read_type_suppressions, read_suppressions): Declare new
	functions.
	(diff_context::{suppressions, add_suppression, add_suppressions}):
	Declare new methods.
	(diff::is_suppressed): Declare new member function.
	(apply_suppressions): Declare new function & overloads.
	* src/abg-comparison.cc (is_type_diff): Define new static
	function.
	({suppression_base, type_suppression}::priv): Define new types.
	({suppression_base, type_suppression}::*): Define the methods of the new
	suppression_base, type_suppressions types.
	(read_type_suppression, read_type_suppressions, read_suppressions)
	(read_type_suppressions): Define new static functions.
	(diff_context::priv::supprssions_): New data member.
	(diff_context::{suppressions, add_suppression, add_suppressions}):
	New methods.
	(diff::is_filtered_out): Consider that a diff node that is in the
	SUPPRESSED_CATEGORY is filtered out.
	(diff::is_suppressed): Define new member function.
	(operator<<(ostream& o, diff_category c)): Support the
	SUPPRESSED_CATEGORY category.
	(corpus_diff::report): Apply suppressions before reporting
	anything.
	(category_propagation_visitor::visit_end): Do not propagate
	SUPPRESSED_CATEGORY.  This is just like what we do for
	REDUNDANT_CATEGORY.
	(struct suppression_categorization_visitor): New visitor.
	(apply_suppressions): Define function & overloads.
	* include/abg-ini.h (config::section::find_property): New method.
	(config::section): Fix end of class comment.
	* src/abg-ini.cc (config::section::find_property): Define new
	method.
	* tests/data/test-diff-suppr/test0-type-suppr-{0,1,2}.suppr: New
	test input files.
	* tests/data/test-diff-suppr/test0-type-suppr-report-{0,1,2,3}.txt:
	Likewise.
	* tests/data/test-diff-suppr/test0-type-suppr-v{0,1}.o: Likewise.
	* tests/data/test-diff-suppr/test0-type-suppr-v{0,1}.cc: Source code
	for new test input.
	* tests/data/test-diff-suppr/test1-typedef-suppr-v{0,1}.o: New test
	input files.
	* tests/data/test-diff-suppr/test1-typedef-suppr.h: Source code
	for new test input files.
	* tests/data/test-diff-suppr/test1-typedef-suppr-v{0,1}.c: Likewise
	* tests/data/test-diff-suppr/test1-typedef-suppr-{0,1}.suppr: New
	test input files.
	* tests/data/test-diff-suppr/test1-typedef-suppr-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test1-typedef-suppr-report-1.txt: Likewise.
	* tests/data/test-diff-suppr/test1-typedef-suppr-report-2.txt: Likewise.
	* tests/test-diff-suppr.cc: New test harness to run type suppression tests
	using the input files above.
	* tests/data/test-diff-suppr/test3-struct-suppr-0.suppr: New test input.
	* tests/data/test-diff-suppr/test3-struct-suppr-1.suppr: Likewise.
	* tests/data/test-diff-suppr/test3-struct-suppr-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test3-struct-suppr-report-1.txt: Likewise.
	* tests/data/test-diff-suppr/test3-struct-suppr-report-2.txt: Likewise.
	* tests/data/test-diff-suppr/test3-struct-suppr-v0.cc: Likewise.
	* tests/data/test-diff-suppr/test3-struct-suppr-v0.o: Likewise.
	* tests/data/test-diff-suppr/test3-struct-suppr-v1.cc: Likewise.
	* tests/data/test-diff-suppr/test3-struct-suppr-v1.o: Likewise.
	* tests/Makefile.am: Build the new runtestdiffsuppr test harness
	from the test-diff-filter.cc file.  Add the new test files to the
	build system and source distribution.
	* tools/bidiff.cc (options::suppressions): New data member.
	(display_usage): Add a help string for the new
	--suppressions command line switch.
	(parse_command_line): Parse the --suppressions command line
	switch.
	(set_diff_context_from_opts): Read the suppressions provided by
	the --suppression command line switch and stuff them into the diff
	context.
2014-10-13 17:44:44 +02:00
Dodji Seketeli
2a77bead11 Implement generic diff tree walking and port categorization over it
* include/abg-comp-filter.h (apply_filter): Declare new overload
	that takes a corpus_diff_sptr ...
	* src/abg-comp-filter.cc (apply_filter): ... and define it.  On
	the existing overload for diff_sptr, make sure to traverse all
	diff nodes, even those that have already been traversed.
	* include/abg-comparison.h (enum diff_category): Remove
	NOT_REDUNDANT_CATEGORY, add REDUNDANT_CATEGORY.
	(operator&=, +operator<<): Declare new operators for enum diff_category.
	(diff_context::{forbid_traversing_a_node_twice,
	traversing_a_node_twice_is_forbidden):
	(diff_context::categorizing_redundancy): Remove this declaration.
	(diff_context::maybe_apply_filters): Declare a new overload that
	takes a corpus_diff_sptr.  And a take a new flag that says if it
	should visit all nodes including those that have already been
	visited.
	(diff::priv_): Make this data member protected.
	(diff::{begin_traversing, is_traversing, end_traversing,
	finish_diff_type, children_nodes, append_child_node,
	get_pretty_representation, chain_into_hierarchy, traverse}):
	Declare new member functions.
	(distinct_diff::{finish_diff_type, get_pretty_representation,
	chain_into_hierarchy}): Likewise.
	(distinct_diff::traverse): Remove.
	(pointer_diff::pointer_diff): Take the underlying type diff in
	parameter.
	(pointer_diff::{finish_diff_type, get_pretty_representation,
	chain_into_hierarchy}): Declare new member functions.
	(pointer_diff::traverse): Remove.
	(reference_type_def::reference_type_def): Take the underlying type
	diff in parameter.
	({array_type_def, reference_type_def}::{finish_diff_type,
	get_pretty_representation, chain_into_hierarchy}): Declare new
	member functions.
	({array_type_diff, reference_type_def}::traverse): Remove.
	(qualified_type_diff::qualified_type_diff): Take the underlying
	type diff in parameter.
	({enum_diff, qualified_type_diff, class_diff}::{finish_diff_type,
	get_pretty_representation, chain_into_hierarchy}): Declare new
	member functions.
	({enum_diff, qualified_type_diff, class_diff}::traverse): Remove.
	(is_class_diff): Declare new function.
	(base_diff::base_diff): Take the underlying type diff in
	parameter.
	({scope_diff, base_diff}::{finish_diff_type, get_pretty_representation,
	chain_into_hierarchy}): Declare new member functions.
	({scope_diff, base_diff}::traverse): Remove.
	(function_decl_diff::function_decl_diff): Take the return type
	diff as parameter.
	({function_decl_diff, type_decl_diff}::{finish_diff_type,
	get_pretty_representation, chain_into_hierarchy}): Declare new
	member functions.
	({function_decl_diff, type_decl_diff}::traverse): Remove.
	(typedef_diff::typedef_diff): Take the underlying type diff as
	parameter.
	(typedef::{finish_diff_type, get_pretty_representation,
	chain_into_hierarchy}): Declare new member functions.
	({typedef, translation_unit_diff}::traverse): Remove member
	function.
	(corpus_diff::{finish_diff_type, children_nodes,
	append_child_node, changed_variables, get_pretty_representation,
	chain_into_hierarchy}): Declare new member functions.
	(class diff_node_visitor::{visit_begin, visit_end}): Declare new
	member functions.
	(propagate_categories, print_diff_tree, categorizing_redundancy)
	(clear_redundancy_categorization, apply_filters): New functions
	and function overloads.
	* src/abg-comparison.cc (TRY_PRE_VISIT, TRY_PRE_VISIT_CLASS_DIFF)
	(TRY_POST_VISIT, TRY_POST_VISIT_CLASS_DIFF)
	(CATEGORIZE_REDUNDANCY_FROM_CHILD_NODE)
	(UPDATE_REDUNDANCY_CATEGORIZATION_FROM_NODE_SUBTREE)
	(TRAVERSE_DIFF_NODE_AND_PROPAGATE_CATEGORY)
	(TRAVERSE_MEM_DIFF_NODE_AND_PROPAGATE_CATEGORY)
	(TRAVERSE_MEM_FN_DIFF_NODE_AND_PROPAGATE_CATEGORY)
	(ENSURE_DIFF_NODE_TRAVERSED_ONCE)
	(ENSURE_MEM_DIFF_NODE_TRAVERSED_ONCE): Remove these macros.
	Hurrah.
	(diff_context::priv::categorizing_redundancy_): Remove.
	(diff_context::priv::forbid_traversing_a_node_twice_): Add new
	data member.
	(diff_context::priv::priv): Adjust.
	(diff_context::{forbid_traversing_a_node_twice,
	traversing_a_node_twice_is_forbidden}): Define new member
	functions.
	(diff_context::maybe_apply_filters): Once filters are applied (and
	categories are set to the relevant diff tree nodes, run a pass
	over the diff tree to propagate the categories to the relevant
	diff tree parent nodes.  Add an overload for corpus_diff_sptr.
	(diff_context::categorizing_redundancy): Remove member function.
	(diff_context::maybe_apply_filters): Define a new overload for
	corpus_diff_sptr
	(struct diff::priv::{finished_, traversing_, children_,
	pretty_representation_}):  New data members.
	(diff::priv::priv): Adjust.
	(diff::{begin_traversing, is_traversing, end_traversing,
	finish_diff_type, children_nodes, append_child_node, traverse,
	set_category, get_pretty_representation, chain_into_hierarchy}):
	Define new member functions.
	(diff::is_filtered_out): Do not refer to NOT_REDUNDANT_CATEGORY
	anymore.  Rather, use the new REDUNDANT_CATEGORY.
	({distinct_diff, var_diff, pointer_diff, array_diff,
	reference_diff, qualified_type_diff, enum_diff, class_diff,
	base_diff, scope_diff, function_decl_diff, type_decl_diff,
	typedef_diff}::{get_pretty_representation, chain_into_hierarchy,
	finish_diff_type}): Define new member functions.
	({distinct_diff, var_diff, pointer_diff, array_diff,
	reference_diff, qualified_type_diff, enum_diff, class_diff,
	base_diff, scope_diff, function_decl_diff, type_decl_diff,
	typedef_diff, translation_unit_diff}::traverse): Remove member
	functions.
	(operator&=, operator<<): Define new operators for diff_category.
	({function_decl_diff, typedef_diff}::priv::priv): Add a new
	constructor.
	(pointer_diff::{priv::priv, pointer_diff})
	(reference_diff::{priv::priv, reference_diff})
	(qualified_type_diff::{priv::priv, qualified_type_diff})
	(enum_diff::{priv::priv, enum_diff}, base_diff::{priv::priv,
	base_diff}, function_decl_diff::function_decl_diff): Take the
	underlying type diff in parameter.
	(compute_diff): Adjust the pointer_diff, reference_diff,
	qualified_type_diff, base_diff, function_decl_diff overloads.
	(class_diff::priv::{count_filtered_bases,
	count_filtered_subtype_changed_dm, count_filtered_changed_dm,
	count_filtered_changed_mem_fns, count_filtered_inserted_mem_fns,
	count_filtered_deleted_mem_fns}): Adjust for the call to
	diff_context::maybe_apply_filters.
	(corpus_diff::priv::{finished_, pretty_representation_}): New data
	member.
	(corpus_diff::priv::priv): New constructor.
	(corpus_diff::priv::clear_redundancy_categorization): Define new
	member function.
	(corpus_diff::priv::apply_filters_and_compute_diff_stats):
	Adjust for call to diff_context::maybe_apply_filters.  Also, call
	clear_redundancy_categorization at the end.
	(corpus_diff::priv::categorize_redundant_changed_sub_nodes):
	Revisit logic.
	(corpus_diff::{chain_into_hierarchy, finish_diff_type,
	children_nodes, append_child_node, changed_variables,
	get_pretty_representation}): Define new member functions.
	(corpus_diff::report): Categorize redundancy for every top level
	function/variable diff.
	(corpus_diff::traverse): Adjust to the new traversing interface.
	(diff_node_visitor::{visit_begin, visit_end}): Define new member
	functions.
	(struct category_propagation_visitor, struct diff_node_printer)
	(struct redundancy_marking_visitor, struct
	redundancy_clearing_visitor): New diff tree node visitors.
	(propagate_categories, print_diff_tree, categorize_redundancy)
	(clear_redundancy_categorization, apply_filters): Define new
	functions.
	* tests/Makefile.am: Add the new tests/print-diff-tree.cc to the
	source distribution.  Build it into a tests/printdifftree binary.
	* tools/abidiff.cc (print_diff_tree): Add debugging functions to
	call from within the debugger.  By default, this function and its
	overloads are not compiled.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2014-10-10 13:18:04 +02:00
Dodji Seketeli
d041c1f5dd Rename bi* tools to abi* tools
* tests/data/test-bidiff: Rename this directory to
	tests/data/test-abidiff.
	* tests/test-bidiff.cc: Renamed this to tests/test-abidiff.cc.
	* tools/biar.cc: Renamed to tools/abiar.cc
	* tools/bidiff.cc: Renamed to tools/abidiff.cc
	* tools/bidw.cc: Renamed to tools/abidw.cc
	* tools/bilint.cc: Renamed to tools/abilint.cc
	* tools/bisym.cc: Renamed to tools/abisym.cc
	* tests/test-alt-dwarf-file.cc: Renamed references to bidw* to abidw*.
	* tests/test-diff-filter.cc: Renamed references to bidiff to abidiff.
	* tests/test-lookup-syms.cc: Renamed references to bisym to abisym.
	* tools/Makefile.am: Adjust.
	* tests/Makefile.am: Likewise.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2014-09-26 10:58:16 +02:00
Dodji Seketeli
fde3436568 Better support for inline related diffs
* include/abg-comparison.h
	(diff_category::HARMLESS_SYMBOL_ALIAS_CHANGE_CATEORY): New
	enumerator.
	(diff_category::EVERYTHING_CATEGORY): Adjust.
	* include/abg-ir.h (elf_symbol::get_aliases_id_string)
	(elf_symbol::does_alias, elf_symbols_alias)
	(compute_aliases_for_elf_symbol): Declare new functions ...
	* src/abg-ir.cc (elf_symbol::get_aliases_id_string)
	(elf_symbol::does_alias, elf_symbols_alias)
	(compute_aliases_for_elf_symbol): ... and define them.
	(function_decl::operator==): Take in account elf symbol aliases.
	* src/abg-comp-filter.cc (function_name_changed_but_not_symbol):
	Define new static functions.
	(harmless_filter::visit): Categorize function name changes that
n	doesn't impact underlying elf symbols (or the fact that two
	symbols were aliases and are not anymore) as harmless.
	* src/abg-comparison.cc (function_decl_diff::report): Properly
	report function name changes, or symbol aliases changes for that
	matter.  Also report inline-ness declaration changes.
	* src/abg-dwarf-reader.cc (die_is_declared_inline): New static
	function.
	(build_function_decl): Use the above.
	* tools/bidiff.cc (set_diff_context_from_opts): Add
	abigail::comparison::HARMLESS_SYMBOL_ALIAS_CHANGE_CATEORY into the
	harmless change camp.
	* tests/data/test-diff-dwarf/test14-inline-report.txt: New test
	input.
	* tests/data/test-diff-dwarf/test14-inline-v0.o: Likewise.
	* tests/data/test-diff-dwarf/test14-inline-v1.o: Likewise.
	* tests/data/test-diff-dwarf/test14-inline-v0.cc: Source code for
	test input.
	* tests/data/test-diff-dwarf/test14-inline-v1.cc: Source code for
	test input.
	* tests/test-diff-dwarf.cc: Run this test harness over the new
	input above.
	* tests/data/test-diff-filter/test20-inline-report-0.txt: Likewise.
	* tests/data/test-diff-filter/test20-inline-report-1.txt:
	Likewise.
	* tests/data/test-diff-filter/test20-inline-v0.o: New test input.
	* tests/data/test-diff-filter/test20-inline-v1.o: New test input.
	* tests/data/test-diff-filter/test20-inline-v0.cc: Source code for
	test input.
	* tests/data/test-diff-filter/test20-inline-v1.cc: Likewise.
	* tests/test-diff-filter.cc: Run this test harness over the new
	input above.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2014-09-16 15:10:41 +02:00
Dodji Seketeli
ba487a2cd9 Better support for enum diffs
* include/abg-comparison.h (changed_enumerator_type): New typedef.
	(diff_category::{HARMLESS_ENUM_CHANGE_CATEGORY}): New enumerator.
	* src/abg-comp-filter.cc (has_type_size_change)
	(has_enumerator_insertion, has_enumerator_removal_or_change)
	(has_harmful_enum_change): New functions.
	(harmless_filter::visit): Categorize enumerator insertions that
	don't change the size of the type into HARMLESS_ENUM_CHANGE_CATEGORY.
	(harmful_filter::visit): Categorize enumerator removal or any enum
	change that changes the size of the type into
	SIZE_OR_OFFSET_CHANGE_CATEGORY.
	* src/abg-comparison.cc (enumerator_value_comp)
	(changed_enumerator_comp): New types.
	(sort_enumerators, sort_changed_enumerators): New static
	functions.
	(enum_diff::report): Sort enum related reports by the value of the
	enumerators.
	* src/abg-dwarf-reader.cc (build_enum_type): Name anonymous enums
	as __anonymous_enum__.
 	* tools/bidiff.cc (set_diff_context_from_opts): Add
	abigail::comparison::HARMLESS_ENUM_CHANGE_CATEGORY into the harmless
	stuff camp.
	* tests/data/test-diff-dwarf/test15-enum-report.txt: New test
	input.
	* tests/data/test-diff-dwarf/test15-enum-v1.o: Likewise.
	* tests/data/test-diff-dwarf/test15-enum-v0.o: Likewise.
	* tests/data/test-diff-dwarf/test15-enum-v0.cc: Source code for
	test input.
	* tests/data/test-diff-dwarf/test15-enum-v1.cc: Likewise.

	* tests/data/test-diff-filter/test19-enum-report-0.txt: New test input.
	* tests/data/test-diff-filter/test19-enum-report-1.txt: Likewise.
	* tests/data/test-diff-filter/test19-enum-v0.o: Likewise.
	* tests/data/test-diff-filter/test19-enum-v1.o: Likewise.
	* tests/data/test-diff-filter/test19-enum-v0.cc: Source code for
	test input.
	* tests/data/test-diff-filter/test19-enum-v1.cc: Likewise.
	* tests/test-diff-dwarf.cc: Run this test harness on the new test
	inputs above.
	* tests/test-diff-filter.cc: Likewise.
	* tests/Makefile.am: Add the new files above to the source distribution.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2014-09-16 14:02:27 +02:00
Jan Engelhardt
aa7fc67119 Set automake options globally
* configure.ac(AM_INIT_AUTOMAKE): Set the subdir-object option
	here ..
	* src/Makefile.am: ... not here.
	* tests/Makefile.am: Likewise.
	* tools/Makefile.am: Likewise.

Signed-off-by: Jan Engelhardt <jengelh@inai.de>
2014-09-12 11:04:45 +02:00
Dodji Seketeli
d38b2216a4 Sort reported changed data members by increasing offset
* include/abg-comparison.h (changed_type_or_decl_vector): New
	typedef.
	* include/abg-fwd.h (is_data_member): Change the overload that
	takes a decl_base_sptr to make it return the real var_decl_sptr
	rather than just a bool.
	* src/abg-comparison.cc (ChangedDataMemberComp, DataMemberComp):
	New comparison functors.
	(sort_changed_data_members, sort_data_members): Sorting functions
	for changed data members and data members.
	(class_diff::report): Sort reports for deleted, inserted and
	change data members by the increasing value of the offsets of said
	data members.
	* src/abg-ir.cc (is_data_member): Change the overload that takes a
	decl_base_sptr to make it return the real var_decl_sptr rather
	than just a bool.
	* tests/data/test-bidiff/test-struct1-report.txt: Adjust.
	* tests/data/test-diff-dwarf/test13-report.txt: New test input.
	* tests/data/test-diff-dwarf/test13-v0.cc: Source code for new
	test input.
	* tests/data/test-diff-dwarf/test13-v0.o: New test input.
	* tests/data/test-diff-dwarf/test13-v1.cc: Source code for new
	test input.
	* tests/data/test-diff-dwarf/test13-v1.o: New test input.
	* tests/Makefile.am: Add the new test inputs above to the source
	distribution.
	* tests/test-diff-dwarf.cc: Run this test harness on the new test
	input.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2014-09-03 09:59:03 +02:00
Dodji Seketeli
b75a020fb1 Do not filter out diff nodes that are only in NOT_REDUNDANT_CATEGORY
* src/abg-comparison.cc (diff::is_filtered_out): If a diff not is
	only in the NOT_REDUNDANT_CATEGORY category consider it as not
	being filtered.
	* tests/data/test-diff-filter/test18-report.txt: New test input.
	* tests/data/test-diff-filter/test18-v0.cc: Source code for new
	test input.
	* tests/data/test-diff-filter/test18-v0.o: New test input.
	* tests/data/test-diff-filter/test18-v1.cc: Source code for new
	test input.
	* tests/data/test-diff-filter/test18-v1.o: New test input.
	* tests/Makefile.am: Add the new test inputs to the source distribution.
	* tests/test-diff-filter.cc: Run this test harness on the new test
	input above.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2014-09-03 09:59:03 +02:00
Dodji Seketeli
36ed6e0583 Make zip archive support optional
* configure.ac: Support a new --enable-zip-archive option.  By
	default its value is set to the 'auto', meaning that if libzip is
	installed, that turns the option on -- just like if
	--enable-zip-archive was called with the value 'yes'; if libzip is
	not installed, that turns the option off -- just like if
	--enable-zip-archive was called with the value 'no'.  If libzip is
	detected, the pre-processor macro HAVE_LIBZIP is set to 1.  If
	--enable-zip-archive is turned on, the pre-processor macro
	WITH_ZIP_ARCHIVE is set to 1.
	* config.h.in (HAVE_LIBZIP, WITH_ZIP): New define.
	* src/abg-corpus.cc: Include config.h.  Guard the inclusion of
	abg-libzip-utils.h with the WITH_ZIP_ARCHIVE macro.  Likewise for
	the use of declarations coming from abg-libzip-utils.h.
	* src/abg-libzip-utils.cc: Include config.h.  Guard the file's
	content with the WITH_ZIP_ARCHIVE macro.
	* src/abg-reader.cc: Include config.h.  Guard the inclusion of
	abg-libzip-utils.h with the WITH_ZIP_ARCHIVE.  Likewise for the
	use of declarations coming from abg-libzip-utils.h.
	* src/abg-writer.cc: Likewise.
	* tests/Makefile.am: Build runtestwritereadarchive and runtestdot
	only if zip archives are supported.
	* tools/Makefile.am: The biar program is built only if
	zip archives are supported.
	* tools/bidiff.cc: Handle zip archives only if the
	WITH_ZIP_ARCHIVE macros is defined.
	* tools/bilint.cc: Likewise.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2014-08-31 11:28:42 +02:00
Dodji Seketeli
bc7694e14c During redundancy marking start with the current node as non redundant
* src/abg-comparison.cc (ENSURE_DIFF_NODE_TRAVERSED_ONCE):  If the
	diff node is being traversed for the first time, mark it as being
	in the NOT_REDUNDANT_CATEGORY.  I don't know why I was doing this
	only for classes and basic types.  Update comments.
	* tests/data/test-diff-filter/test16-report.txt: New test input.
	* tests/data/test-diff-filter/test16-v0.cc: Source code of new
	test input.
	* tests/data/test-diff-filter/test16-v0.o: New test input.
	* tests/data/test-diff-filter/test16-v1.cc: Source code of new
	test input.
	* tests/data/test-diff-filter/test16-v1.o: New test input.
	* tests/data/test-diff-filter/test17-0-report.txt: Likewise.
	* tests/data/test-diff-filter/test17-1-report.txt: Likewise.
	* tests/data/test-diff-filter/test17-v0.cc: Source code of new
	test input.
	* tests/data/test-diff-filter/test17-v0.o: Likewise.
	* tests/data/test-diff-filter/test17-v1.cc: Source code of new
	test input.
	* tests/data/test-diff-filter/test17-v1.o: Likewise.
	* tests/Makefile.am: Add the new files to the source distribution.
	* tests/test-diff-filter.cc (in_out_spec): Run this test harness
	over the new test inputs.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2014-08-28 16:27:38 +02:00
Dodji Seketeli
b13345fd86 Take symbol versions in account when computing added/removed decls
* include/abg-corpus.h
	(corpus::lookup_{function,variable}_symbol): Add an overload
	declaration that takes the version of the symbol to lookup.
	* src/abg-comparison.cc
	(corpus_diff::priv::ensure_lookup_tables_populated): So when looking
	up the corpora for symbols, take their versions in account.
	* src/abg-corpus.cc (corpus::lookup_{function,variable}_symbol):
	Add an overload definition that takes the version of the symbol to
	lookup.
	(symtab_build_visitor_type::build_id): New
	member functions.
	(corpus::priv::build_public_decl_table): Use the new member
	functions above.
	* src/abg-ir.cc (elf_symbol::version::operator==): Do not take the
	is_default flag in account when comparing two symbol versions.
	* libtest12-v{0,1}.so: New test input files.
	* libtest12-v{0,1}.c: Source code for the test input files.
	* test12-version-script: Version script to build the files above.
	* test12-report.txt: Test input file.
	* tests/Makefile.am: Add the new test input files above to the
	source distribution.
	* tests/test-diff-dwarf.cc (in_out_specs[]): Add an entry to this
	table for the new test input files.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2014-08-25 23:16:50 +02:00
Ondrej Oprala
055a789abe Support C and C++ array type.
* include/abg-comparison.h (array_diff): Declare new class.
	(array_diff_sptr): Shared pointer to type array_diff.
	(compute_diff): Overload the function to take type
	array_diff_sptr as the first two arguments.
	* include/abg-fwd.h (array_type_def): Declare new class.
	(subrange_type): Likewise.
	(is_array_def): Declare new function.
	* include/abg-ir.h (array_type_def_sptr): Shared pointer
	to type array_type_def.
	(array_type_def): Declare new class.
	(ir_node_visitor::visit): Declare a new virtual function
	taking a pointer to type array_type_def as an argument.
	* src/abg-comparison.cc (compute_diff_for_types): Add
	try_to_diff for two instances of type array_type_def.
	(array_diff::priv): declare struct for holding private members
	of type array_diff.
	(array_diff::array_diff): Define constructor.
	(array_diff::{first,second}_array):Define new
	member functions.
	(array_diff::element_type_diff): Likewise.
	(array_diff::{length,report,traverse}): Likewise.
	(compute_diff): Define function overloaded in
	include/abg-comparison.h.
	* src/abg-dwarf-reader.cc (build_array_type): Define new
	function. Handle DW_TAG_array_type and DW_TAG_subrange type.
	(build_ir_node_from_die): Amend case DW_TAG_array_type with
	a call to build_array_type.
	* src/abg-hash.cc (array_type_def::hash): Declare new struct.
	(type_base::dynamic_hash::operator()): Attempt to dynamic_cast
	the argument to type array_type_def as well.
	(array_type_def::hash): Declare new struct.
	* src/abg-ir.cc (array_type_def::array_type_def): Define
	constructors.
	(array_type_def::priv): declare struct for holding private members
	of type array_type_def.
	(array_type_def::operator==(const decl_base&):
	Define new operator.
	(array_type_def::operator==(const type_base&):
	Likewise.
	(array_type_def::append_subrange{,s}): Define
	new functions.
	(array_type_def::{set,get}_size_in_bits): Likewise.
	(array_type_def::get_dimension_count): Likewise.
	(array_type_def::get_qualified_name): Likewise.
	(array_type_def::get_pretty_representation): Likewise.
	(array_type_def::get_subrange_representation): Likewise.
	(array_type_def::traverse): Likewise.
	(array_type_def::get_{element_type,location,subranges}): Likewise.
	(array_type_def::is_infinite): Likewise.
	(array_type_def::~array_type_def): Define destructor.
	(ir_node_visitor::visit): Define function, taking
	pointer to array_type_def as an argument.
	* src/abg-reader.cc (map_id_and_node): Check if node
	is an array.
	(is_array_def): Check if object is an array.
	(handle_element_node): Handle array_type_def as well.
	(build_subrange_type): Define new function.
	(build_array_type_def): Likewise.
	(build_type): Build type array_type_def as well.
	(build_type_composition): Likewise.
	(handle_array_type_def): Define new function.
	* src/abg-writer.cc: (write_decl): Output arrays
	as well.
	(write_member_type): Likewise.
	(write_type_composition): Likewise.
	(write_array_type_def): Define new function.
	* tests/data/test-diff-dwarf/test{10,11}-v{0,1}.{cc,o}: New test source
	files
	* tests/data/test-diff-dwarf/test{10,11}-report.txt: Likewise.
	* tests/data/test-diff-dwarf/test10-report.txt: New test input.
	* tests/data/test-read-dwarf/test7.cc: New test source
	file.
	* tests/data/test-read-dwarf/test7.so: New input binary
	to read.
	* tests/data/test-read-dwarf/test7.so.abi: New reference
	test to compare against.
	* tests/data/test-read-write/test25.xml: New test source
	file.
	* tests/test-diff-dwarf.cc: Adjust to launch the new test.
	* tests/test-read-dwarf.cc: Likewise.
	* tests/test-read-write.cc: Likewise.
	* test/Makefile.am: Add the new test inputs to the source
	distribution.

Signed-off-by: Ondrej Oprala <ooprala@redhat.com>
Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2014-08-22 13:07:41 +02:00
Dodji Seketeli
d08e5181f2 Support TLS variables
* src/abg-ir.cc (elf_symbol::is_variable): Accept TLS objects as
	variables too.
	* src/abg-dwarf-reader.cc (eval_last_constant_dwarf_sub_expr)
	(die_location_address): Add an output parameter to say if the
	resulting constant value is a tls address or not.
	(lookup_public_variable_symbol_from_elf): Use the proper
	elf_symbol::is_variable() method, rather than trying to figure out
	the low levels of what a variable is here.  Also, cleanup the
	condition.
	(read_context::load_symbol_maps): Consider symbols of type
	STT_TLS, when loading symbols for variables.  Also, to avoir
	symbols that are for versions, filter out symbols of type
	STT_OBJECT and with a SHN_ABS section index.
	(read_context::get_variable_address): If the address is for a tls
	variable, do no try to adjust the address to arrange for things
	like prelink.  As that doesn't seem to affect TLS variables.
	(dwarf_expr_eval_context::set_tls_addr): New data member.
	(dwarf_expr_eval_context::dwarf_expr_eval_context): Initialize it.
	(dwarf_expr_eval_context::set_tls_address): New accessors.
	(dwarf_expr_eval_context::op_manipulates_stack): Handle
	DW_OP_GNU_push_tls_address, a bit like DW_OP_form_tls_address, but
	then, its result is a constant.  Set the
	dwarf_expr_eval_context::set_tls_addr flag when these two OPs are
	run.
	(die_member_offset): Adjust to the new signature of
	eval_last_constant_dwarf_sub_expr.
	* tests/data/test-diff-dwarf/libtest9-v0.so: New test input.
	* tests/data/test-diff-dwarf/libtest9-v1.so: Likewise.
	* tests/data/test-diff-dwarf/test9-report.txt: Likewise
	* tests/data/test-diff-dwarf/test9-v0.cc: Source code for the
	first input.
	* tests/data/test-diff-dwarf/test9-v1.cc: Source code for the
	second input.
	* tests/test-diff-dwarf.cc: Run this harness on the two new inputs
	above.
	* tests/Makefile.am: Add the new inputs to the source distribution.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2014-08-19 13:50:23 +02:00
Dodji Seketeli
7b126c03a0 Support alternate debug info sections
ABGBZ#17193
	* include/abg-dwarf-reader.h (class read_context)
	(typedef read_context_sptr, create_read_context)
	(has_alt_debug_info): Declare these.
	(read_corpus_from_elf): Declare new overload.
	* src/abg-dwarf-reader.cc (find_alt_debug_info)
	(is_die_attribute_resolved_through_gnu_ref_alt)
	(build_primary_die_parent_relations_under)
	(build_alternate_die_parent_relations_under):
	Define new static functions.
	(read_context::{alt_dwarf_,
	alt_debug_info_path_, alternate_die_decl_map_,
	alternate_die_parent_map_}): New data members.
	(read_context::{alt_dwarf, alt_debug_info_path,
	alternate_die_decl_map, associate_die_to_decl_primary,
	associate_die_to_decl_alternate, associate_die_to_decl,
	lookup_decl_from_die_offset_primary,
	lookup_decl_from_die_offset_alternate,
	lookup_decl_from_die_offset, alternate_die_parent_map}): New
	member functions.
	(read_context::load_debug_info): Painfully Get a handle on the
	alternate debug info section too.  We shouldn't have to do all
	this work; we could use the new dwarf_getalt() function from
	libdw, but we cannot as we want to support supports that predate
	that api.  When a version of elfutils gets released with that api
	though, we should conditionally use that instead.
	(build_ir_node_from_die, get_parent_die, get_scope_for_die)
	(build_namespace_decl_and_add_to_ir)
	(build_class_type_and_add_to_ir, build_qualified_type)
	(build_pointer_type_def, build_reference_type, build_typedef_type)
	(build_var_decl, build_function_decl): Take a new parameter that
	tells if the input DIE is from alternate debug info.  Adjust their
	code accordingly.
	(die_die_attribute): Take a new output parameter that tells if the
	resolved DIE is from alternate debug info.  Also take a new
	parameter that tells if the input DIE is from alternate debug info
	sections.
	(build_die_parent_relations_under): Take the DIE -> parent map to
	act upon.  Also, add a new overload that takes a flag saying if
	the DIE is from alternate debug info or not, and act upon that.
	(build_die_parent_maps): Renamed build_die_parent_map into this
	and make it build DIE -> parent DIE relationship for the alternate
	debug info file as well.
	(find_last_import_unit_point_before_die, ): Adjust to use the
	information about if the relevant DIEs are in alternate debug info
	or not.
	(build_translation_unit_and_add_to_ir): Clear the alternate DIE ->
	decl map, that is per TU just as the primary DIE -> decl map.
	Adjust to use the information about if the relevant DIEs are in
	alternate debug info or not.
	(read_debug_info_into_corpus): Build the two DIE -> DIE parent
	maps (one for the primary debug info and one for the alternate
	debug info).
	(create_read_context, has_alt_debug_info): Define new public entry
	points.
	(read_corpus_from_elf): New entry point overload that takes a
	read_context.
	* tools/bidw.cc (options::{check_alt_debug_info_path,
	show_base_name_alt_debug_info_path}): New data members.
	(display_usage): Update for the two new options
	--check-alternate-debug-info and
	check-alternate-debug-info-base-name.
	(parse_command_line): Parse the two options above.
	(main) Handle the two new options above.
	* tests/Makefile.am: Build the new runtestaltdwarf test.  Add the
	new data/test-alt-dwarf-file/* files to the build system.
	* tests/test-alt-dwarf-file.cc: New test driver.
	* tests/data/test-alt-dwarf-file/test0-common.cc: New test input
	files.
	* tests/data/test-alt-dwarf-file/libtest0-common.so: Likewise.
	* tests/data/test-alt-dwarf-file/test0.cc: Likewise.
	* tests/data/test-alt-dwarf-file/libtest0.so: Likewise.
	* tests/data/test-alt-dwarf-file/test0.h: Likewise.
	* tests/data/test-alt-dwarf-file/test0-common-dwz.debug: Likewise.
	* tests/data/test-alt-dwarf-file/test0-debug-dir/.build-id/16/7088580c513b439c9ed95fe6a8b29496495f26.debug:
	Likewise.
	* tests/data/test-alt-dwarf-file/test0-debug-dir/test0-common-dwz.debug:
	Likewise.
	* tests/data/test-read-dwarf/test1.abi: Adjust. bidw doesn't emit
	an abstract constructor/destructor anymore. It emits just the
	functions matching the cdtor symbols found in the binary.
	* tests/data/test-read-dwarf/test2.so.abi: Likewise.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2014-08-15 18:27:04 +02:00
Sinny Kumari
fe6b9fb61b Consider symbols with STB_GNU_UNIQUE binding as public
* src/abg-ir.cc (is_public): Change in function to consider
	symbols with STB_GNU_UNIQUE binding as public
	* tests/data/test-read-dwarf/test6.cc: Test file to generate
	STB_GNU_UNIQUE binding symbols
	* tests/data/test-read-dwarf/test6.so: Test shared library having
	STB_GNU_UNIQUE binding symbols
	* tests/data/test-read-dwarf/test6.so.abi: XML file containing
	dwarf information from test6.so
	* tests/test-read-dwarf.cc (in_out_specs): Add the new test above
	* tests/Makefile.am: Add tests/data/test-read-dwarf/test6.cc,
	tests/data/test-read-dwarf/test6.so and
	tests/data/test-read-dwarf/test6.so.abi to the distribution

Signed-off-by: Sinny Kumari <skumari@redhat.com>
Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2014-07-08 14:18:36 +02:00
Dodji Seketeli
01cd814bbc Support reading void* type from DWARF
* include/abg-ir.h (type_decl::get_void_type_decl): Declare new
	static method.
	* src/abg-ir.cc (type_decl::get_void_type_decl): Define it.
	* src/abg-dwarf-reader.cc (build_ir_node_for_void_type): Define
	new static function.
	(build_pointer_type_def): Support void* type nodes here.
	* tests/data/test-read-dwarf/test5.cc: Source code for new test
	input.
	* tests/data/test-read-dwarf/test5.o: New test input.
	* tests/data/test-read-dwarf/test5.o.abi: Likewise.
	* tests/Makefile.am: Add the above to the source distribution.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2014-06-23 17:31:26 +02:00