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Dodji Seketeli 5ed0e40bfd Bug 20887 - Show relative change of offsets 
Until now, an offset change is reported by showing the old and new
offsets of the data member that changed.

This patch adds the string "(by +N bits)" with 'N' being the number of
bits by which the offset of the data member was increased, or "(by -N
bits) if the offset of the data member was decreased of N bits.

The patch also emits a string that says "size hasn't changed" if the
size of the structure did not change.

This can be disabled by a new --no-show-relative-offset-changes
option.

	* doc/manuals/abidiff.rst: Document the new
	--no-show-relative-offset-changes.
	* doc/manuals/abipkgdiff.rst: Likewise.
	* include/abg-comparison.h
	(diff_context::show_relative_offset_changes): New accessors.
	* include/abg-ir.h ({set,get}_data_member_offset): Return uint64_t
	instead of the less portable size_t.
	* src/abg-comparison.cc
	(diff_context::priv::show_relative_offset_changes_): New data
	member.
	(dif_context::show_relative_offset_changes): Define accessor.
	(maybe_show_relative_offset_change): Define new function.
	(represent): In the overload for var_diff, call the new
	maybe_show_relative_offset_change.
	(report_size_and_alignment_changes):  If the size of the type
	didn't change then say it now.
	* src/abg-ir.cc (set_data_member_offset, get_data_member_offset):
	Take or return a uint64_t instead of a size_t.
	* tools/abidiff.cc (options::show_relative_offset_changes): New
	data member.
	(options::options): Initialize it.
	(display_usage): Display help string for the new
	--no-show-relative-offset-changes.
	(parse_command_line): Parse the new
	--no-show-relative-offset-changes options.
	(set_diff_context_from_opts): Set the
	"show-relative-offset-changes" flag according to the new option.n
	* tools/abipkgdiff.cc (options::show_relative_offset_changes): New
	data member.
	(options::options): Initialize it.
	(display_usage): Add help string for the new
	--no-show-relative-offset-changes option.
	(set_diff_context_from_opts): Set the
	"show-relative-offset-changes" flag according to the new option.
	(parse_command_line): Parse the new command line option.
	* tests/data/test-diff-dwarf/test40-report-0.txt: Add new
	reference output.
	* tests/data/test-diff-dwarf/test40-v0.c: Source code of the first
	test binary.
	* tests/data/test-diff-dwarf/test40-v1.c: Source code of the
	second test binay.
	* tests/data/test-diff-dwarf/libtest40-v0.so: New first test binary.
	* tests/data/test-diff-dwarf/libtest40-v1.so: New second test binary.
	* tests/test-diff-dwarf.cc (in_out_spec): Add the new test
	binaries above to the set of binaries that are compared.
	* tests/data/Makefile.am: Add the new test material to source
	distribution.
	* tests/data/test-abicompat/test7-fn-changed-report-0.txt: Adjust.
	* tests/data/test-abidiff/test-PR18791-report0.txt: Likewise.
	* tests/data/test-abidiff/test-enum0-report.txt: Likewise.
	* tests/data/test-abidiff/test-enum1-report.txt: Likewise.
	* tests/data/test-abidiff/test-struct1-report.txt: Likewise.
	* tests/data/test-diff-dwarf/test0-report.txt: Likewise.
	* tests/data/test-diff-dwarf/test1-report.txt: Likewise.
	* tests/data/test-diff-dwarf/test10-report.txt: Likewise.
	* tests/data/test-diff-dwarf/test11-report.txt: Likewise.
	* tests/data/test-diff-dwarf/test13-report.txt: Likewise.
	* tests/data/test-diff-dwarf/test15-enum-report.txt: Likewise.
	* tests/data/test-diff-dwarf/test27-local-base-diff-report.txt: Likewise.
	* tests/data/test-diff-dwarf/test32-fnptr-changes-report-0.txt: Likewise.
	* tests/data/test-diff-dwarf/test33-fnref-changes-report-0.txt: Likewise.
	* tests/data/test-diff-dwarf/test38-union-report-0.txt: Likewise.
	* tests/data/test-diff-dwarf/test4-report.txt: Likewise.
	* tests/data/test-diff-dwarf/test5-report.txt: Likewise.
	* tests/data/test-diff-dwarf/test6-report.txt: Likewise.
	* tests/data/test-diff-dwarf/test8-report.txt: Likewise.
	* tests/data/test-diff-filter/test0-report.txt: Likewise.
	* tests/data/test-diff-filter/test01-report.txt: Likewise.
	* tests/data/test-diff-filter/test1-report.txt: Likewise.
	* tests/data/test-diff-filter/test13-report.txt: Likewise.
	* tests/data/test-diff-filter/test16-report-2.txt: Likewise.
	* tests/data/test-diff-filter/test16-report.txt: Likewise.
	* 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/test18-report.txt: Likewise.
	* tests/data/test-diff-filter/test19-enum-report-1.txt: Likewise.
	* tests/data/test-diff-filter/test2-report.txt: Likewise.
	* tests/data/test-diff-filter/test23-redundant-fn-parm-change-report-0.txt:
	Likewise.
	* tests/data/test-diff-filter/test24-compatible-vars-report-1.txt:
	Likewise.
	* tests/data/test-diff-filter/test25-cyclic-type-report-0.txt:
	Likewise.
	* tests/data/test-diff-filter/test25-cyclic-type-report-1.txt:
	Likewise.
	* tests/data/test-diff-filter/test26-qualified-redundant-node-report-0.t:
	Likewise.xt
	* tests/data/test-diff-filter/test26-qualified-redundant-node-report-1.txt:
	Likewise.
	* tests/data/test-diff-filter/test27-redundant-and-filtered-children-nodes-report-1.txt:
	Likewise.
	* tests/data/test-diff-filter/test27-redundant-and-filtered-children-nodes-report-2.txt:
	Likewise.
	* tests/data/test-diff-filter/test29-finer-redundancy-marking-report-0.txt:
	Likewise.
	* tests/data/test-diff-filter/test3-report.txt: Likewise.
	* tests/data/test-diff-filter/test30-pr18904-rvalueref-report0.txt:
	Likewise.
	* tests/data/test-diff-filter/test30-pr18904-rvalueref-report1.txt:
	Likewise.
	* tests/data/test-diff-filter/test31-pr18535-libstdc++-report-0.txt:
	Likewise.
	* tests/data/test-diff-filter/test31-pr18535-libstdc++-report-1.txt:
	Likewise.
	* tests/data/test-diff-pkg/libICE-1.0.6-1.el6.x86_64.rpm--libICE-1.0.9-2.el7.x86_64.rpm-report-0.txt: Likewise.
	* tests/data/test-diff-pkg/libsigc++-2.0-0c2a_2.4.0-1_amd64--libsigc++-2.0-0v5_2.4.1-1ubuntu2_amd64-report-0.txt: Likewise.
	* tests/data/test-diff-pkg/tbb-4.1-9.20130314.fc22.x86_64--tbb-4.3-3.20141204.fc23.x86_64-report-0.txt: Likewise.
	* tests/data/test-diff-pkg/tbb-4.1-9.20130314.fc22.x86_64--tbb-4.3-3.20141204.fc23.x86_64-report-1.txt: Likewise.
	* tests/data/test-diff-suppr/test0-type-suppr-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test0-type-suppr-report-3.txt: Likewise.
	* tests/data/test-diff-suppr/test0-type-suppr-report-5.txt: Likewise.
	* tests/data/test-diff-suppr/test0-type-suppr-report-7.txt: Likewise.
	* tests/data/test-diff-suppr/test1-typedef-suppr-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test1-typedef-suppr-report-2.txt: Likewise.
	* tests/data/test-diff-suppr/test10-changed-parm-c-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test2-struct-suppr-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test23-alias-filter-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test23-alias-filter-report-2.txt: 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/test30-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test4-local-suppr-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test4-local-suppr-report-1.txt: Likewise.
	* tests/data/test-diff-suppr/test5-fn-suppr-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test5-fn-suppr-report-1.txt: Likewise.
	* tests/data/test-diff-suppr/test5-fn-suppr-report-2.txt: Likewise.
	* tests/data/test-diff-suppr/test5-fn-suppr-report-3.txt: Likewise.
	* tests/data/test-diff-suppr/test5-fn-suppr-report-4.txt: Likewise.
	* tests/data/test-diff-suppr/test5-fn-suppr-report-5.txt: Likewise.
	* tests/data/test-diff-suppr/test6-fn-suppr-report-0-1.txt: Likewise.
	* tests/data/test-diff-suppr/test6-fn-suppr-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test6-fn-suppr-report-1.txt: Likewise.
	* tests/data/test-diff-suppr/test6-fn-suppr-report-2.txt: Likewise.
	* tests/data/test-diff-suppr/test6-fn-suppr-report-3.txt: 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-7.txt: Likewise.
	* tests/data/test-diff-suppr/test7-var-suppr-report-8.txt: Likewise.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
2016-12-02 21:29:28 +01:00
..
data Bug 20887 - Show relative change of offsets 2016-12-02 21:29:28 +01:00
Makefile.am Control symbols exported from libabigail.so 2016-07-27 12:51:02 +02:00
mockfedabipkgdiff.in Make fedabipkgdiff consistent with Libabigail's other tests 2016-07-15 19:41:08 +02:00
print-diff-tree.cc Introduce the concept of environment 2015-09-07 23:35:29 +02:00
runtestcanonicalizetypes.sh.in Bug 20180 - Support system-wide suppression specifications 2016-05-30 18:39:49 +02:00
runtestdefaultsupprs.py.in Fix python interpreter path for el6 2016-06-28 09:12:40 +02:00
runtestfedabipkgdiff.py.in Make fedabipkgdiff consistent with Libabigail's other tests 2016-07-15 19:41:08 +02:00
test-abicompat.cc Implement a [suppress_file] suppression directive 2016-05-08 12:39:26 +02:00
test-abidiff-exit.cc Bug 20180 - Support system-wide suppression specifications 2016-05-30 18:39:49 +02:00
test-abidiff.cc Use worker threads pattern to speed up some tests 2016-01-18 18:23:18 +01:00
test-alt-dwarf-file.cc Use worker threads pattern to speed up some tests 2016-01-18 18:23:18 +01:00
test-core-diff.cc Use worker threads pattern to speed up some tests 2016-01-18 18:23:18 +01:00
test-diff2.cc Update copyright years 2015-01-07 17:52:10 +01:00
test-diff-dwarf-abixml.cc Bug 20180 - Support system-wide suppression specifications 2016-05-30 18:39:49 +02:00
test-diff-dwarf.cc Bug 20887 - Show relative change of offsets 2016-12-02 21:29:28 +01:00
test-diff-filter.cc Better recognize qualified void type 2016-07-07 14:04:10 +02:00
test-diff-pkg.cc Make fedabipkgdiff consistent with Libabigail's other tests 2016-07-15 19:41:08 +02:00
test-diff-suppr.cc A suppressed diff node implies suppressing all equivalent nodes too 2016-11-26 11:54:19 +01:00
test-dot.cc Correct DOT merge. 2013-07-23 23:13:55 +02:00
test-ir-walker.cc Introduce the concept of environment 2015-09-07 23:35:29 +02:00
test-lookup-syms.cc Use worker threads pattern to speed up some tests 2016-01-18 18:23:18 +01:00
test-read-dwarf.cc Drop suppressed ABI artifacts from the IR 2016-09-21 18:35:08 +02:00
test-read-write.cc Drop suppressed ABI artifacts from the IR 2016-09-21 18:35:08 +02:00
test-svg.cc Add svg generation. 2013-07-23 23:13:54 +02:00
test-types-stability.cc Bug 19204 - libabigail aborts on DWARF referencing non-existing DIE 2016-01-21 10:48:32 +01:00
test-utils.cc Use worker threads pattern to speed up some tests 2016-01-18 18:23:18 +01:00
test-utils.h Use worker threads pattern to speed up some tests 2016-01-18 18:23:18 +01:00
test-valgrind-suppressions.supp Support running "make check-valgrind" 2016-05-22 23:20:12 +02:00
test-write-read-archive.cc Fix archive writing support 2015-04-24 19:59:19 +02:00
update-test-output.py Rename tests/update-test-read-dwarf-output.py 2016-12-02 12:59:32 +01:00