libabigail/tests/data/test-diff-dwarf/test-23-diff-arch-v0.cc

// Compile this with:
// gcc -g -Wall -shared -m32 -o libtest-23-diff-arch-v0-32.so test-23-diff-arch-v0.cc

// And then, compile this again with:
// gcc -g -Wall -shared -o libtest-23-diff-arch-v0-64.so test-23-diff-arch-v0.cc
int
foo()
{return 0;}
Detect and report changes in ELF architecture Libabigail does not take in account the architecture of the ELF file it reads. This patch changes that to represent the ELF architecture as a string, detect when that architecture changes accross two corpora being compared and emit a report about that change. * configure.ac: Detect the presence of libebl.a and add it to the list of library we depend on to build libabigail. Report when libelf.so is not found. * include/abg-comparison.h: (diff_context::show_architecture_change): Declare new accessors. (corpus_diff::architecture_changed): Declare new method. * include/abg-corpus.h (corpus::{get,set}_architecture_name): Declare new accessors. * src/abg-comparison.cc (diff_context::priv::show_architecture_change_): New data member. (diff_context::priv::priv): Initialize it. (diff_context::show_architecture_change): Define new accessors. (function_decl_diff::report): Report when the size/alignment of the function address changes. (corpus_diff::priv::architectures_equal_): New data member. (corpus_diff::priv::priv): Initialize it. (corpus_diff::priv::emit_diff_stats): Take in account changes of architecture. (corpus_diff::architecture_changed): Define new method. (corpus_diff::length): Take in account changes of architecture. (corpus_diff::report): Report about changes of architecture. (compute_diff): In the overload for corpus_diff_sptr, detect changes fo architecture. * src/abg-corpus.cc (corpus_priv::architecture_name): Define new data member. (corpus::{get,set}_architecture_name): Define new method. * src/abg-dwarf-reader.cc: Include elfutils/libebl.h to use ebl_openbackend() and ebl_backend_name() (read_context::elf_architecture_): Define new data member. (read_context::elf_architecture): Define new accessor. (read_context::{load_elf_architecture, load_remaining_elf_data}): Define new methods. (read_corpus_from_elf): Use ctxt.load_remaining_elf_data() in lieu of ctxt.load_dt_soname_and_needed. Stick the architecture into the corpus. * src/abg-reader.cc (read_corpus_from_input): Read the 'architecture' XML property. * src/abg-writer.cc (write_corpus_to_native_xml): Write the 'architecture' XML property. * tests/data/test-diff-dwarf/libtest-23-diff-arch-v0-32.so: New test input file. * tests/data/test-diff-dwarf/libtest-23-diff-arch-v0-64.so: Likewise. * tests/data/test-diff-dwarf/test-23-diff-arch-report-0.txt: Likewise. * tests/data/test-diff-dwarf/test-23-diff-arch-v0.cc: Source code for the binary test input files above. * tests/data/Makefile.am: Add the new test input files to the source distribution. * tests/test-diff-dwarf.cc (in_out_specs): Add the new test input data to the set of input data to run this test harness over. * tests/test-read-dwarf.cc (main): Do not take the architecture in account during comparisons. Signed-off-by: Dodji Seketeli <dodji@redhat.com> 2015-01-07 12:45:53 +00:00			`// Compile this with:`
			`// gcc -g -Wall -shared -m32 -o libtest-23-diff-arch-v0-32.so test-23-diff-arch-v0.cc`

			`// And then, compile this again with:`
			`// gcc -g -Wall -shared -o libtest-23-diff-arch-v0-64.so test-23-diff-arch-v0.cc`
			`int`
			`foo()`
			`{return 0;}`