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I also encounter this issue and solved it locally by implementing this 2 functions. - The linux version of StartSymbolizerSubprocess uses only POSIX function and can be reused as is on OS X (maybe we should move it in a new sanitizer_symbolizer_posix.cc file) - I have a simple implementation of GetListOfModules (see the attached file) but it required 10.6 at least. That said, implementing this 2 functions is not enough to get something useful on OS X. It remains major issue: - InitializeExternalSymbolizer is never called, and so the values returns GetListOfModules is never use. - llvm-symbolizer failed...

...e tests fail with the following assertion: ==40116== Sanitizer CHECK failed: /Users/meadori/Code/src/llvm/projects/compiler-rt/lib/sanitizer_common/sanitizer_symbolizer_mac.cc:26 ((0 && "unimplemented")) != (0) (0, 0) Should these tests be running? StartSymbolizerSubprocess and GetListOfModules are not implemented for OS X. > $ make check-asan > > … > > ******************** > Testing Time: 125.18s > ******************** > Failing Tests (1): > AddressSanitizer :: use-after-free.cc > This failure seems to be due to adding ALWAYS_INLINE to 'free_comm...

I am building LLVM on OS X 10.7.5 with cmake. Under this configuration some ASan and UBSan tests are failing: $ make check-ubsan … ******************** Testing Time: 2.36s ******************** Failing Tests (11): UndefinedBehaviorSanitizer :: Float/cast-overflow.cpp UndefinedBehaviorSanitizer :: Integer/add-overflow.cpp UndefinedBehaviorSanitizer :: Integer/div-zero.cpp

...and solved it locally by implementing this 2 > functions. > > - The linux version of StartSymbolizerSubprocess uses only POSIX function > and can be reused as is on OS X (maybe we should move it in a new > sanitizer_symbolizer_posix.cc file) > - I have a simple implementation of GetListOfModules (see the attached > file) but it required 10.6 at least. > > That said, implementing this 2 functions is not enough to get something > useful on OS X. It remains major issue: > > - InitializeExternalSymbolizer is never called, and so the values returns > GetListOfModules is nev...