clang-offload-bundler mixes symbols from different objects when unbundling an archive #83509
Description
Change to clang/lib/Driver/OffloadBundler.cpp in commit #81700 causes clang-offload-bundler to join symbols from different objects when unbundling an archive:
Source file s.cpp:
void bazball() {
}
Source file t.cpp:
void foobar() {
}
Commands:
clang++ -c s.cpp -o s.o;
clang-offload-bundler -type=o -targets=host-x86_64-unknown-linux-gnu -input=s.o -output=s_bundled.o;
clang++ -c t.cpp -o t.o;
clang-offload-bundler -type=o -targets=host-x86_64-unknown-linux-gnu -input=t.o -output=t_bundled.o;
llvm-ar cr bundled.a s_bundled.o t_bundled.o
clang-offload-bundler -unbundle --targets=host-x86_64-unknown-linux-gnu -type=aoo -input=bundled.a -output=t_list.txt; nm `cat t_list.txt`
The output of the nm command without the change is:
bundled-742762.o:
0000000000000000 T _Z7bazballv
bundled-61506b.o:
0000000000000000 T _Z6foobarv
The output with the change is:
/tmp/bundled-e7ca35.o:s_bundled.o:
0000000000000000 T _Z7bazballvt_bundled.o:
0000000000000000 T _Z6foobarv/tmp/bundled-5ea078.o:s_bundled.o:
0000000000000000 T _Z7bazballvt_bundled.o:
0000000000000000 T _Z6foobarv