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AddressSanitizer for GCC
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addresssanitizergcc.md

https://github.com/google/sanitizers/wiki/AddressSanitizerLeakSanitizer

CMAKE Flags

If you haven't got the ASAN libraries installed on the run host, or you are going to use another LD_PRELOAD'd lib like onload, you'll have to build 'static-libasan':

Static LibASAN build

cmake -DCMAKE_BUILD_TYPE=RelWithDebInfo -DCMAKE_CXX_FLAGS='-fsanitize=address -fno-omit-frame-pointer' -DCMAKE_MODULE_LINKER_FLAGS='-fsanitize=address -static-libasan' -DCMAKE_EXE_LINKER_FLAGS='-fsanitize=address -static-libasan'

Running with ASAN

  • Virtual memory must not be limited by ulimit -v or by LimitAS in a systemd unit file
  • Output from the address sanitizer will be printed to stderr, and available in the journal
  • Preventing LeaK Detector exiting a process with non-zero code for tests, export LSAN_OPTIONS=exitcode=0
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