[cfe-users] Code locations from the Memory Sanitizer
Hi all, I've tried Clang versions 3.6, 3.9 and 5.0 (all installed from Debian packages on a Debian x86_64 machine), but I still can't get Memory Sanitizer to give me the error file and line number locations. The project is http://github.com/erikd/libsndfile and I'm configuring/building it with eg: CC=clang-5.0 CXX=clang++-5.0 CFLAGS="-fsanitize=memory -fno-omit-frame-pointer -g -Wno-expansion-to-defined" CXXFLAGS=$CFLAGS ./configure --enable-werror --disable-shared make clean all check and I get: broadcast_test : broadcast.rf64 .. Uninitialized bytes in __interceptor_write at offset 36 inside [0x7100, 104) ==15113==WARNING: MemorySanitizer: use-of-uninitialized-value #0 0x67802e (/home/erik/Git/libsndfile/tests/command_test+0x67802e) #1 0x600404 (/home/erik/Git/libsndfile/tests/command_test+0x600404) #2 0x5f72f6 (/home/erik/Git/libsndfile/tests/command_test+0x5f72f6) #3 0x4be48b (/home/erik/Git/libsndfile/tests/command_test+0x4be48b) #4 0x4c06d6 (/home/erik/Git/libsndfile/tests/command_test+0x4c06d6) #5 0x4b1cfc (/home/erik/Git/libsndfile/tests/command_test+0x4b1cfc) #6 0x4a10c6 (/home/erik/Git/libsndfile/tests/command_test+0x4a10c6) #7 0x495dbf (/home/erik/Git/libsndfile/tests/command_test+0x495dbf) #8 0x7f3f37cf22b0 (/lib/x86_64-linux-gnu/libc.so.6+0x202b0) #9 0x41ef79 (/home/erik/Git/libsndfile/tests/command_test+0x41ef79) I expected to get file and line number position as shown in the documentation. Clues? Erik -- -- Erik de Castro Lopo http://www.mega-nerd.com/ ___ cfe-users mailing list cfe-users@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-users
Re: [cfe-users] Code locations from the Memory Sanitizer
2017-04-28 12:25 GMT+02:00 Erik de Castro Lopo via cfe-users : > Hi all, > > I've tried Clang versions 3.6, 3.9 and 5.0 (all installed from Debian > packages on a Debian x86_64 machine), but I still can't get Memory > Sanitizer to give me the error file and line number locations. > > The project is > >http://github.com/erikd/libsndfile > > and I'm configuring/building it with eg: > > CC=clang-5.0 > CXX=clang++-5.0 > CFLAGS="-fsanitize=memory -fno-omit-frame-pointer -g > -Wno-expansion-to-defined" > CXXFLAGS=$CFLAGS > ./configure --enable-werror --disable-shared > make clean all check > > and I get: > > broadcast_test : broadcast.rf64 .. > Uninitialized bytes in __interceptor_write at offset 36 inside > [0x7100, 104) > ==15113==WARNING: MemorySanitizer: use-of-uninitialized-value > #0 0x67802e (/home/erik/Git/libsndfile/tests/command_test+0x67802e) > #1 0x600404 (/home/erik/Git/libsndfile/tests/command_test+0x600404) > #2 0x5f72f6 (/home/erik/Git/libsndfile/tests/command_test+0x5f72f6) > #3 0x4be48b (/home/erik/Git/libsndfile/tests/command_test+0x4be48b) > #4 0x4c06d6 (/home/erik/Git/libsndfile/tests/command_test+0x4c06d6) > #5 0x4b1cfc (/home/erik/Git/libsndfile/tests/command_test+0x4b1cfc) > #6 0x4a10c6 (/home/erik/Git/libsndfile/tests/command_test+0x4a10c6) > #7 0x495dbf (/home/erik/Git/libsndfile/tests/command_test+0x495dbf) > #8 0x7f3f37cf22b0 (/lib/x86_64-linux-gnu/libc.so.6+0x202b0) > #9 0x41ef79 (/home/erik/Git/libsndfile/tests/command_test+0x41ef79) > > I expected to get file and line number position as shown in the documentation. > > Clues? I often need to set the ASAN_SYMBOLIZER_PATH: https://clang.llvm.org/docs/AddressSanitizer.html#id4 It often tends to be wrong by package default... HTH Rainer > > Erik > -- > -- > Erik de Castro Lopo > http://www.mega-nerd.com/ > ___ > cfe-users mailing list > cfe-users@lists.llvm.org > http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-users ___ cfe-users mailing list cfe-users@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-users
Re: [cfe-users] Code locations from the Memory Sanitizer
Rainer Gerhards wrote: > I often need to set the ASAN_SYMBOLIZER_PATH: > > https://clang.llvm.org/docs/AddressSanitizer.html#id4 > > It often tends to be wrong by package default... Bingo! In my case, since I'm using Memory Sanitizer I needed to set MSAN_SYMBOLIZER_PATH rather than ASAN_SYMBOLIZER_PATH. Thanks for your help Rainer! Cheers, Erik -- -- Erik de Castro Lopo http://www.mega-nerd.com/ ___ cfe-users mailing list cfe-users@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-users
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