User Tools

Site Tools


c

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Next revision
Previous revision
c [2024/07/04 07:16] – adds asan options ninec [2025/08/04 13:05] (current) nine
Line 19: Line 19:
      
 full docs: https://github.com/google/sanitizers/wiki/AddressSanitizerFlags full docs: https://github.com/google/sanitizers/wiki/AddressSanitizerFlags
 +
 +globally for the ''CMakeLists.txt'' project:
 +  add_compile_options(-fsanitize=address)
 +  add_link_options(-fsanitize=address)
 +
 +for a target:
 +  target_compile_options(<build-target> PRIVATE -fsanitize=address)
 +  target_link_options(<build-target> PRIVATE -fsanitize=address)
 +
 +==== tsan ====
 +
 +Problem when executing a binary:
 +  FATAL: ThreadSanitizer: unexpected memory mapping 0x5a36aaebd000-0x5a36aafd2000
 +
 +
 +Sulution, disable ASLR for testing:
 +  setarch --addr-no-randomize build/path/to/binary
 +
 +or:
 +  sudo sysctl vm.mmap_rnd_bits=30   # 30: partly, 28 totally
 +
 +==== alternatives ====
 +
 +declare alternatives:
 +<code>
 +sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-12 20
 +sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-12 20
 +sudo update-alternatives --install /usr/bin/gcov gcov /usr/bin/gcov-12 20
 +sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-13 30
 +sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-13 30
 +sudo update-alternatives --install /usr/bin/gcov gcov /usr/bin/gcov-13 30
 +</code>
 +
 +select the right alternatives:
 +<code>
 +sudo update-alternatives --config gcc
 +sudo update-alternatives --config g++
 +sudo update-alternatives --config gcov
 +</code>
c.1720077392.txt.gz · Last modified: 2024/07/04 07:16 by nine