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Diffstat (limited to 'clang/docs/UsersManual.rst')
| -rw-r--r-- | clang/docs/UsersManual.rst | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/clang/docs/UsersManual.rst b/clang/docs/UsersManual.rst index e58093831bf..43a8717c9be 100644 --- a/clang/docs/UsersManual.rst +++ b/clang/docs/UsersManual.rst @@ -968,12 +968,17 @@ are listed below. Extra features of MemorySanitizer (require explicit ``-fsanitize=memory``): - - ``-fsanitize-memory-track-origins``: Enables origin tracking in + - ``-fsanitize-memory-track-origins[=level]``: Enables origin tracking in MemorySanitizer. Adds a second section to MemorySanitizer reports pointing to the heap or stack allocation the uninitialized bits came from. Slows down execution by additional 1.5x-2x. + Possible values for level are 0 (off), 1 (default), 2. Level 2 adds more + sections to MemorySanitizer reports describing the order of memory stores + the uninitialized value went through. Beware, this mode may use a lot of + extra memory. + Extra features of UndefinedBehaviorSanitizer: - ``-fno-sanitize-recover``: By default, after a sanitizer diagnoses |
