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Dodji Seketeli 2f7248f340 PR25058 - Support decl DIEs referring to symbols using DW_AT_ranges 
Usually, function DIEs (DW_TAG_subprogram) refer to the address of the
underlying ELF symbol by using the DW_AT_low_pc attribute.  However,
there are cases where it does so by using the DW_AT_ranges attribute.
In those cases, the first address of the sequence defined in the value
of that attribute is the address of the ELF symbol.

The problem is that the DWARF reader of Libabigail fails to get the
address of the underlying ELF symbol when the DW_AT_low_pc attribute
is missing.  Rather, it should then look at the value of the
DW_AT_ranges attribute instead.

This is what this patch does.

	* src/abg-dwarf-reader.cc
	(read_context::get_first_address_from_DW_AT_ranges): Define new
	member function.
	(read_context::get_function_address): Use the new
	read_context::get_first_address_from_DW_AT_ranges here.
	* tests/data/test-diff-dwarf/PR25058-liblttng-ctl-report-1.txt:
	New reference test output.
	* tests/data/test-diff-dwarf/PR25058-liblttng-ctl.so: New test
	input binary.
	* tests/data/test-diff-dwarf/PR25058-liblttng-ctl2.10.so: New test
	input binary.
	* tests/data/Makefile.am: Add the new test materials above to
	source distribution.
	* tests/test-diff-dwarf.cc (in_out_specs): Add the new input test
	input binary files to this test harness.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2019-10-03 17:42:30 +02:00
autoconf-archive Do not ignore valgrind checks returning an error 2017-02-27 10:01:15 +01:00
bash-completion Add --self-compare option in fedabipkgdiff 2017-05-31 16:21:14 +05:30
doc Support the "name_not_regexp" property in the [suppress_type] section 2019-09-30 14:56:52 +02:00
include Support the "name_not_regexp" property in the [suppress_type] section 2019-09-30 14:56:52 +02:00
m4 Delete ltsugar.m4 and pkg.m4 files from m4/ 2015-01-06 09:54:45 +01:00
scripts Clean up scripts/* 2017-04-14 04:14:12 -04:00
src PR25058 - Support decl DIEs referring to symbols using DW_AT_ranges 2019-10-03 17:42:30 +02:00
tests PR25058 - Support decl DIEs referring to symbols using DW_AT_ranges 2019-10-03 17:42:30 +02:00
tools Serialize canonical types to avoid testing if types have been emitted 2019-09-17 17:52:26 +02:00
.clang-format .clang-format: Add more options for match existing coding style 2019-05-22 14:34:31 +02:00
.gitignore .gitignore: Add libabigail-?.* *.orig files 2019-05-22 14:34:23 +02:00
abigail.m4 For usage from within GCC set header path to $includedir/libabigail 2013-08-14 16:10:15 +02:00
AUTHORS Initial AUTHORS and README 2013-02-28 13:25:20 +01:00
ChangeLog Update ChangeLog 2019-03-27 18:39:08 +01:00
COMMIT-LOG-GUIDELINES Update the COMMIT-LOG-GUIDELINES file 2016-05-22 23:20:12 +02:00
COMPILING Some documentation fixes 2018-12-07 11:21:50 +01:00
configure.ac Fix thinkos in DW_FORM_strx detection in configure.ac 2019-10-01 16:50:37 +02:00
CONTRIBUTING Control symbols exported from libabigail.so 2016-07-27 12:51:02 +02:00
COPYING Use a better wording for the COPYING file 2015-04-22 09:53:18 +02:00
COPYING-GPLV3 Update licence texts 2015-04-20 13:51:21 +02:00
COPYING-LGPLV2 Initial import of gen-changelog.py 2014-11-18 23:18:06 +01:00
COPYING-LGPLV3 LGPLv3 License the library 2013-07-23 23:13:55 +02:00
default.abignore Add default suppression specification for the libvirt project 2018-10-11 10:59:54 +02:00
gen-changelog.py [gen-changelog] Make subject line always come first 2014-11-18 23:18:06 +01:00
install-sh Add missing autoconfiscation files into version control 2013-03-01 00:47:49 +01:00
libabigail.pc.in Make libxml2 a private dependency wrt pkconfig 2013-08-22 17:41:29 +02:00
ltmain.sh Add missing autoconfiscation files into version control 2013-03-01 00:47:49 +01:00
Makefile.am Make the "upload-release" target be usable in parallel 2018-03-06 18:08:22 +01:00
NEWS Update NEWS file for 1.6 2019-03-27 18:36:53 +01:00
README Fix wording in README 2015-09-05 10:30:00 +02:00
release-text-template.txt Update the release text template after 1.0 2017-11-22 15:55:43 +01:00
update-copyright.sh Update copyright for 2019 2019-01-07 14:54:47 +01:00
VISIBILITY Control symbols exported from libabigail.so 2016-07-27 12:51:02 +02:00

README 

This is the Application Binary Interface Generic Analysis and
Instrumentation Library.

It aims at constructing, manipulating, serializing and de-serializing
ABI-relevant artifacts.

The set of artifacts that we are intersted is made of quantities like
types, variable, fonctions and declarations of a given library or
program.  For a given library or program this set of quantities is
called an ABI corpus.

This library aims at (among other things) providing a way to compare
two ABI Corpora (apparently the plural of corpus is copora, heh,
that's cool), provide detailed information about their differences,
and help build tools to infer interesting conclusions about these
differences.

You are welcome to contribute to this project after reading the files
CONTRIBUTING and COMMIT-LOG-GUIDELINES files in the source tree.

Communicating with the maintainers of this project -- including
sending patches to be include to the source code -- happens via email
at libabigail@sourceware.org.