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7 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Dodji Seketeli
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fc55e7f343 |
Make abidiff and abicompat return meaningful exit codes
As per https://sourceware.org/bugzilla/show_bug.cgi?id=18146, abidiff the exit code of abidiff and abicompat is now a bit field that can be inspected to know if the ABI change reported is incompatible for sure, or if it needs user review of the output to decide. This patch also updates the documentation. * doc/manuals/abicompat.rst: Update documentation for abicompat exit codes. * doc/manuals/abidiff.rst: Likewise for abidiff exit codes. * include/abg-tools-utils.h (enum abidiff_status): Declare new enum. (operator{|,&,|=}): Declare new operators for the new enum abidiff_status. (abidiff_status_has_error, abidiff_status_has_abi_change) (abidiff_status_has_incompatible_abi_change): Declare new functions. * src/abg-tools-utils.cc (operator{|,&,|=}): Define these new operators. (abidiff_status_has_error, abidiff_status_has_abi_change) (abidiff_status_has_incompatible_abi_change): Define new functions. * tests/test-diff-filter.cc (main): Adjust for the new exit code of abidiff. * tests/test-diff-suppr.cc (main): Likewise. * tests/test-abicompat.cc (main): Likewise. * tools/abicompat.cc (enum abicompat_status): Remove. (operator{|,&,|=}): Remove these operators for enum abicompat_status. (perform_compat_check_in_normal_mode) (perform_compat_check_in_weak_mode): Return abidiff_status instead of abicompat_status. Adjust therefore. (main): Adjust to return abidiff_status now, instead of a just zero for all non-error cases. * tools/abidiff.cc (main): Likewise. Signed-off-by: Dodji Seketeli <dodji@redhat.com> |
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Dodji Seketeli
|
a102a2f032 |
Add support for abicompat weak mode
This patch implements the weak mode of abicompat. In this mode, just
the application and the new version of the library are provided. The
types of functions and variables of the library that are consumed by
the application are compared to the types of the functions and
variables expected by the application. The goal is to check if the
types of the declarations consumed by the application and provided by
the library are compatible with what the application expects.
The abicompat first gets the set of symbols undefined in the
application and exported by the library. It then builds the set of
declarations exported by the library that have those symbols. We call
these the set of declarations of the library that are consumed by the
application.
Note that the debug information for the application does not contain
the declarations of the functions/variables whose symbols are
undefined. So we can not just read them to compare them to
declarations exported by the library.
But the *types* of the variables and the *sub-types* of the functions
whose symbols are undefined in the application are present in the
debug information of the application.
So in the weak mode, abicompat compare the *types* of the declarations
consumed by the application as expected by the application (described
by the debug information of the application) with the types of the
declarations exported by the library.
To do this a number of changes were necessary.
The patch builds a representation of all the types found in the
application's debug info. Before that, only the types that are
reachable from exported declarations were represented.
The abidw tool got a new --load-all-types to test this new ability of
loading all types.
The patch also adds support for looking a type, not by name, but by
its internal representation.
In the comparison engine, function_type_diff is introduced to
represent changes between two function types. For this, a new class
type_or_decl_base has been introduced in the IR. It's now the base
class for both decl_base and type_base. And abigail::comparison::diff
now takes two pointers of type_or_decl, not decl_base anymore. So
function_type_diff can take two function_type now; not that a
function_type has no declaration so it doesn't inherit decl_base. A
bunch of changes got made just to adjust to this modification.
A number of fixes were made too, to make this work, like adding
missing comparison operators, removing asserts that too strong, etc..
The patch also adjust the test suite as well as the documentation.
* include/abg-fwd.h (class type_or_decl_base): Forward declare
this.
(is_decl, is_type, is_function_type, get_name, get_type_name)
(get_function_type_name, get_pretty_representation)
(lookup_function_type_in_corpus, lookup_type_in_translation_unit)
(lookup_function_type_in_translation_unit)
(synthesize_function_type_from_translation_unit)
(hash_type_or_decl): New function declarations.
* src/abg-corpus.cc (lookup_type_in_corpus)
(lookup_function_type_in_corpus): Define new functions.
* include/abg-ir.h
(translation_unit::lookup_function_type_in_translation_unit):
Declare new friend function.
(class type_or_decl_base): Declare this.
(operator==(const type_or_decl_base&, const type_or_decl_base&)):
Declare new operator.
(operator==(const type_or_decl_base_sptr&, const
type_or_decl_base_sptr&)): Likewise.
(class {decl_base, type_base}): Make these class inherit
type_or_decl_base.
(decl_base::get_member_scopes): New const overload.
(bool operator==(const function_decl::parameter_sptr&,
const function_decl::parameter_sptr&)): New operator.
(function_type::get_parameters): Remove the non-const overload.
(function_type::get_pretty_representation): Declare new member
function.
(method_type::get_pretty_representation): Likewise.
* src/abg-ir.cc (bool operator==(const type_or_decl_base&, const
type_or_decl_base&)): Define new equality operator.
(bool operator==(const type_or_decl_base_sptr&, const
type_or_decl_base_sptr&)): Likewise.
(strip_typedef): Do not expect canonicalized types anymore. Now
the system accepts (and expects) canonicalized types in certain
cases. For instance, non-complete types and aggregated types that
contain non-complete sub-types.
(get_name, get_function_type_name, get_type_name)
(get_pretty_representation, is_decl, is_type, is_function_type)
(lookup_function_type_in_translation_unit)
(synthesize_function_type_from_translation_unit)
(lookup_type_in_scope, lookup_type_in_translation_unit): Define
new functions or new overloads.
(bool operator==(const function_decl::parameter_sptr&,
const function_decl::parameter_sptr& r)): Define
new operator.
(function_type::get_parameters): Remove non-const overload.
(function_type::get_pretty_representation): Define new function.
(function_type::traverse): Adjust.
(method_type::get_pretty_representation): Likewise.
(function_decl::get_pretty_representation): Avoid emitting the
type of cdtors.
(hash_type_or_decl): Define new function.
* include/abg-dwarf-reader.h (create_read_context)
(read_corpus_from_elf): Take a new 'read_all_types' flag.
* src/abg-dwarf-reader.cc (read_context::load_all_types_): New
flag.
(read_context::read_context): Initialize it.
(read_context::canonical_types_scheduled): If some types still
have non-canonicalized sub-types, then do not canonicalize them.
(read_context::load_all_types): New member functions.
(build_function_decl): Do not represent void return type like
empty type anymore, rather, represent it like a void type node.
(build_ir_node_from_die): When asked, load all types
including those that are not reachable from an exported
declaration.
(create_read_context, read_corpus_from_elf): Take a new
'load_all_types' flag and honour it.
* src/abg-reader.cc (read_context::type_is_from_translation_unit):
Support looking up function types in the current translation unit,
now that we now how to lookup function types.
* include/abg-comparison.h (diff_context::{has_diff_for, add_diff,
set_canonical_diff_for, set_or_get_canonical_diff_for,
get_canonical_diff_for}): Make these take instances of
type_or_decl_base_sptr, instead of decl_base_sptr.
(diff::diff): Likewise.
(diff::{first_subject, second_subject}): Make these return
type_or_decl_base_sptr instead of decl_base_sptr.
(type_diff_base::type_diff_base): Make these take instances of
type_or_decl_base_sptr instead of decl_base_sptr.
(distinct_diff::distinct_diff): Likewise.
(distinct_diff::{first, second}): Make these return
type_or_decl_base_sptr instead of decl_base_sptr.
(distinct_diff::entities_are_of_distinct_kinds): Make these take
instances of type_or_decl_base_sptr instead of decl_base_sptr.
(class function_type_diff): Create this new type. It's a
factorization of the function_decl_diff type.
* src/abg-comparison.cc ():
* src/abg-comp-filter.cc ({harmless, harmful}_filter::visit):
Adjust as diff::{first,second}_subject() now returns a
type_or_decl_base_sptr, no more a decl_base_sptr.
(decls_type, decls_diff_map_type): Remove these typedefs and replace it with ...
(types_or_decls_type, types_or_decls_diff_map_type): ... these.
(struct {decls_hash, decls_equals): Remove these type sand replace them with ...
(struct {types_or_decls_hash, types_or_decls_equals}): ... these.
({type_suppression, variable_suppression}::suppresses_diff):
Adjust.
(diff_context::priv::decls_diff_map): Replace this with ...
(diff_context::priv::types_or_decls_diff_map): ... this.
(diff_context::{has_diff_for, add_diff, get_canonical_diff_for,
set_canonical_diff_for, set_or_get_canonical_diff_for}): Take
type_or_decl_base_sptr instead of decl_base_sptr.
(diff::priv::{first, second}_subject): Make the type of these be
type_or_decl_base_sptr, no more decl_base_sptr.
(diff::priv::priv): Adjust for the subjects of the diff being of
type type_or_decl_sptr now, no more decl_base_sptr.
(diff_less_than_functor::operator()(const diff_sptr, const
diff_sptr) const): Adjust.
(diff::diff): djust for the subjects of the diff being of type
type_or_decl_sptr now, no more decl_base_sptr.
(diff::{first,second}_subject): Make the type of these be
type_or_decl_base_sptr, no more decl_base_sptr.
(report_size_and_alignment_changes): Likewise.
(type_diff_base::type_diff_base): Make the type of this be
type_or_decl_base_sptr instead of type_base_sptr.
(distinct_diff::distinct_diff): Make this take instances of
type_or_decl_base_sptr instead of decl_base_sptr.
(distinct_diff::{first, second, entities_are_of_distinct_kinds}):
Likewise.
(distinct_diff::has_changes): Simplify logic.
(distinct_diff::report): Adjust.
(compute_diff_for_types): Add an additional case to support the
new function_type.
(report_size_and_alignment_changes): Make this take instances of
type_or_decl_base_sptr instead of decl_base_sptr.
(class_diff::priv::member_type_has_changed): Return an instance of
type_or_decl_base_sptr rather than a decl_base_sptr.
(class_diff::report): Adjust.
(diff_comp::operator()(const diff&, diff&) const): Adjust.
(enum function_decl_diff::priv::Flags): Remove.
(function_decl_diff::priv::{first_fn_flags_, second_fn_flags_,
fn_flags_changes_}): Remove.
(function_decl_diff::priv::{fn_is_declared_inline_to_flag,
fn_binding_to_flag}): Remove.
(function_decl_diff::{deleted_parameter_at,
inserted_parameter_at}): Remove.
(function_decl_diff::ensure_lookup_tables_populated): Empty this.
(function_decl_diff::chain_into_hierarchy): Adjust.
(function_decl_diff::function_decl_diff): This now only takes the
subjects. It's body is now empty.
(function_decl_diff::{return_type_diff, subtype_changed_parms,
removed_parms, added_parms, type_diff}): Remove these member
functions.
(function_decl_diff::type_diff): Define new member function.
(function_decl_diff::report): Simplify logic by using the
reporting of the child type diff node.
(compute_diff): Likewise, in the overload for function_decl_sptr
simplify logic by using the child type diff object.
(function_type_diff::priv): Define new type.
(function_type_diff::{function_type_diff,
ensure_lookup_tables_populated, deleted_parameter_at,
inserted_parameter_at, finish_diff_type, first_function_type,
second_function_type, return_type_diff, subtype_changed_parms,
removed_parms, added_parms, get_pretty_representation,
has_changes, has_local_changes, report, chain_into_hierarchy}):
Define new functions.
(compute_diff): Define new overload for function_type_sptr.
* tools/abicompat.cc (options::weak_mode): New data member.
(options::options): Initialize it.
(enum abicompat_status): New enum
(abicompat_status operator|(abicompat_status, abicompat_status))
(abicompat_status& operator|=(abicompat_status &, abicompat_status))
(abicompat_status operator&(abicompat_status, abicompat_status)):
New operators to manipulate the abicompat_status enum.
(display_usage): Add help string for the new --weak-mode option.
(parse_command_line): Add the new --weak-mode command line
argument. If the tool is called with just the application and one
library then assume that we are in the weak mode.
(perform_compat_check_in_normal_mode): Define new function, factorized
from what was in the main function.
(perform_compat_check_in_weak_mode): Define new function.
(struct {fn,var}_change): Define new types.
(main): Use perform_compat_check_in_weak_mode() and
perform_compat_check_in_normal_mode().
* tools/abidiff.cc (main): Adjust.
* tools/abidw.cc: (options::load_all_types): Add new data member.
(options::options): Initialize it.
(display_usage): New help string for --load-all-types.
(parse_command_line): Support the new --load-all-types option.
(main): Adjust and honour the --load-all-types option.
* tools/abilint.cc (main): Adjust.
* doc/manuals/abicompat.rst: Update documentation for the new weak
mode. Also provide stuff that was missing from the examples
provided.
* doc/manuals/abidw.rst: Update documentation for the new
--load-all-types option.
* tests/print-diff-tree.cc (main): Adjust.
* tests/test-diff-dwarf.cc (main): Likewise.
* tests/test-read-dwarf.cc (main): Likewise.
* tests/data/test-abicompat/test0-fn-changed-app: Recompile this.
* tests/data/test-abicompat/libtest5-fn-changed-libapp-v{0,1}.so:
New new test input binaries
* tests/data/test-abicompat/test5-fn-changed-app: Likewise.
* tests/data/test-abicompat/test6-var-changed-app: Likewise.
* tests/data/test-abicompat/libtest6-var-changed-libapp-v{0,1}.so:
Likewise.
* tests/data/test-abicompat/test5-fn-changed-report-0.txt:
Reference output for one test above.
* tests/data/test-abicompat/test6-var-changed-report-0.txt:
Likewise.
* tests/data/test-abicompat/test5-fn-changed-app.cc: Source file
for a binary above.
* tests/data/test-abicompat/test5-fn-changed-libapp-v{0,1}.{h,cc}:
Likewise.
* tests/data/test-abicompat/test6-var-changed-libapp-v{0,1}.{cc,h}:
Likewise.
* tests/data/test-abicompat/test6-var-changed-app.cc: Likewise.
* tests/data/Makefile.am: Add the test related files above to the
source distribution.
* tests/test-abicompat.cc (in_out_spec): Add the new test input
above to the list of inputs to feed to this test harness.
(main): Support taking just the app and one library.
* tests/data/test-read-dwarf/test{0, 1, 2.so, 3.so, 5.o,
8-qualified-this-pointer.so,}.abi: Adjust for void type being
really emitted now, as opposed to just being an empty type.
Signed-off-by: Dodji Seketeli <dodji@redhat.com>
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Dodji Seketeli
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dc2f054d03 |
Build the set of exported decls directly during DWARF loading
Until now, after the ABI corpus was built from DWARF, the translation
units of the corpus were walked and each function was considered for
addition into the set of exported decls. During that walking, a first
version of the set was put into a std::list and then, a set of filters
(user-provided tunables like a list of regular expressions to keep or
remove some functions from the exported decls) is applied to that list
and the final set of exported decls is put in a std::vector.
Profiling has shown that this process of building the set of exported
decls is a hot spot and also that the current use of std::list was a
big memory consumer especially on binaries with large exported symbol
tables.
So this patch builds the set of exported decls "on the fly", during
DWARF reading, as opposed to waiting after the DWARF is read and
having to walk the corpus again. The corpus defines a policy object
that encapsulates the methods for determining if a function or
variable ought to be part of the set of exported decls. The DWARF
reader uses that policy object to determine which functions and
variables among those built during the reading ought be part of the
exported decls; the policy object also has a reference to the final
vector (managed by the corpus) that must hold the exported decls, so
the decls are put in that vector directly without unnecessary copying.
Profiling also showed that the string copying done by
{var_decl,function_decl}::get_id() was a hot spot. So the patch
returns a reference there.
With this patch applied, the peak memory consumption of abidiff on
libabigail.so itself (abidiff libabigail.so libabigail.so) is 54MB of
resident and takes 2 minutes and 16s (on my slow system). Without the
patch the peak consumption was more than 300MB and it was taking
slightly longer.
For the test of bug
https://sourceware.org/bugzilla/show_bug.cgi?id=17948, memory
consumtion and wall clock time spent is down from 3.4GB and 1m59s to
760MB and 0m43s.
* include/abg-ir.h ({var,function}_decl::get_id): Return a
reference.
* src/abg-ir.cc ({var,function}_decl::get_id): Return a reference
to the string rather than copying it over.
* include/abg-corpus.h (class corpus::exported_decls_builder):
Declare new type.
(corpus::{sort_functions, sort_variables,
maybe_drop_some_exported_decls, get_exported_decls_builder}):
Declare new methods.
* src/abg-corpus.h (corpus::exported_decls_builder::priv): Define
new type.
(class symtab_build_visitor_type): Remove this type that is
useless now.
(corpus::exported_decls_builder::{exported_decls_builder,
exported_functions, exported_variables,
maybe_add_fn_to_exported_fns, maybe_add_var_to_exported_vars}):
Define new functions.
(corpus::priv::is_public_decl_table_built): Remove this data
member. It's now useless.
(corpus::priv::priv): Adjust.
(corpus::priv::build_public_decl_table): Remove this member
function. It's now useless.
(corpus::{priv::build_unreferenced_symbols_tables, get_functions,
get_variables}): No need to build the public decls table here.
It's already built by the time the corpus is read from DWARF now.
(corpus::{sort_functions, sort_variables,
maybe_drop_some_exported_decls, get_exported_decls_builder}):
Define new member functions.
* src/abg-dwarf-reader.cc (read_context::exported_decls_builder):
New data member.
(read_context::read_context): Initialize it.
(read_context::{exported_decls_builder,
maybe_add_fn_to_exported_fns, maybe_add_var_to_exported_vars}):
Define new member functions.
(read_debug_info_into_corpus): Get the the new
'exported_decls_builder' object from the corpus and stick it into
the read context so the DWARF reading code can use it to build the
exported decls set. When the DWARF reading is done, sort the set
of exported functions and variables that was built.
(build_ir_node_from_die): When a function or variable is built,
consider putting it into the set of exported decls.
* tools/abicompat.cc (main): Now that the exported decls is built
*before* we had a chance to stick the list of symbol IDs to keep,
call corpus::maybe_drop_some_exported_decls() to update the set of
exported decls we should consider for the corpus.
was applied to that list and the final
Signed-off-by: Dodji Seketeli <dodji@redhat.com>
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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>
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Dodji Seketeli
|
8f994b5e29 |
Temporarily disable redundant diff report elimination
So, this is all about problem report https://sourceware.org/bugzilla/show_bug.cgi?id=17693. When redundant diff node reporting is enabled and when a diff node appears twice in a diff tree, we detect that and the second occurrence of the diff node is flagged as being redundant. Later at diff tree node reporting time, the redundant diff node is not reported. The problem is that diff nodes are canonicalized. That is, when the same change is present twice in a diff, the same diff node is going to be present twice. So flagging the second occurrence as being redundant amounts as flagging the first occurrence as being redundant too! So at reporting time, the diff tree visitor that walks the diff tree nodes will avoid reporting the two occurrences of diff tree nodes altogether. This is what happens in the example of the bug above. I am reproducing the example here for convenience: So suppose we have a first version of a library named lib-v0.so which is made of this C code: int add(int a, int b) { } Then suppose that code was changed in a subsequent version of the library named lib-v1.so, leading to the following code: int add(float a, float b) { } So, the diff tree node for the 'add' function is going to have several child diff tree nodes, among which, one that carries the change for the first parameter (int a becoming float a) and the one carrying the change for the second parameter (int b becoming float b). The diff tree node for the second parameter is going to be same diff tree node as the one for the first parameter because what counts is the change in the *type* of the parameter. Thus, the diff tree node for the second parameter is going to be marked as being redundant; and so is the first parameter. So abidiff lib-v0.so lib-v1.so yields: Functions changes summary: 0 Removed, 0 Changed (1 filtered out), 0 Added function Variables changes summary: 0 Removed, 0 Changed, 0 Added variable You can see that even the function 'add' is not mentioned in the report. This is because it has also been considered as being redundant because of a phenomenon named 'propagation'. The redundant-ness of the children nodes of the diff tree node of the 'add' function is propagated to the diff tree node of the add function itself because that add function diff tree node has no child but redundant diff children nodes. This categorization behaviour is correct. What is not correct is that only the second child node of the add function diff tree node should have been marked redundant. I am going to tackle this issue a bit later. For now, I am temporarily disabling redundancy categorization for diff tree nodes by default. Hence this patch. With this patch, abidiff lib-v0.so lib-v1.so yields: Functions changes summary: 0 Removed, 1 Changed, 0 Added function Variables changes summary: 0 Removed, 0 Changed, 0 Added variable 1 function with some indirect sub-type change: [C]'function int add(int, int)' has some indirect sub-type changes: parameter 0 of type 'int' changed: name changed from 'int' to 'float' parameter 1 of type 'int' changed: name changed from 'int' to 'float' Note how the change on the second parameter appears equal to the change on the first. * src/abg-comparison.cc (diff_context::priv::priv): Show redundant changes by default. (categorize_redundancy): Do not categorize redundancy if the diff_context says that we shouldn't. * tools/abicompat.cc (options::show_redundant): New data member. (options::options): Initialize to true. (display_usage): Add new help string for new --no-redundant and --redundant options. (parse_command_line): Parse new --no-redundant and --redundant command line options. (main): Initialize the diff context with respect to the options::show_redundant property. * tools/abidiff.cc (options::options): Initialize the show_redundant_changes data member to true. (display_usage): Show new help string for the new --no-redundant command line option. (parse_command_line): Parse the new --no-redundant command line option. * tests/data/test-diff-filter/libtest23-redundant-fn-parm-change-v0.so: New test data input. * tests/data/test-diff-filter/libtest23-redundant-fn-parm-change-v1.so: Likewise. * tests/data/test-diff-filter/test23-redundant-fn-parm-change-report-0.txt: Likewise. * tests/data/test-diff-filter/test23-redundant-fn-parm-change-v0.c: Source code for the first binary above. * tests/data/test-diff-filter/test23-redundant-fn-parm-change-v1.c: Source code for the second binary above. * tests/data/Makefile.am: Add the new test data input to source distribution. * tests/test-abicompat.cc (in_out_specs): Add --no-redundant to abicompat when we don't want it to show redundant diff reports. * test-diff-filter.cc (in_out_specs): Likewise for abidiff. * test-diff-suppr.cc (in_out_specs): Likewise. Signed-off-by: Dodji Seketeli <dodji@redhat.com> |
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Dodji Seketeli
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775cfcde0c |
Wire the soname check into abicompat
Now that the comparison engine knows how to take SONAMEs into account during ABI abi comparison, it's feasible to make abicompat leverage that capability. This patch does just that. * include/abg-comparison.h (corpus_diff::soname_changed): Declare new member function. * src/abg-comparison.cc (corpus_diff::soname_changed): Define new member function. (corpus_diff::length): Use the new corpus_diff::soname_changed() method. * tests/data/test-abicompat/libtest4-soname-changed-v0.so: New test input data. * tests/data/test-abicompat/libtest4-soname-changed-v1.so: Likewise. * tests/data/test-abicompat/test4-soname-changed-app: Likewise. * tests/data/test-abicompat/test4-soname-changed-report-0.txt: Likewise. * tests/data/test-abicompat/test4-soname-changed-app.cc: Source code for one of the binaries above. * tests/data/test-abicompat/test4-soname-changed-v0.cc: Likewise. * tests/data/test-abicompat/test4-soname-changed-v1.cc: Likewise. * tests/test-abicompat.cc (in_out_specs): Add the new test input data to the list of input data to run this harness over. (main): Take the soname change in account to determine if the change is ABI incompatible. * tests/data/Makefile.am: Add the new test input data above to source distribution. Signed-off-by: Dodji Seketeli <dodji@redhat.com> |
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Dodji Seketeli
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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>
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