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| author | Vitaly Buka <vitalybuka@google.com> | 2024-07-29 17:15:43 -0700 |
|---|---|---|
| committer | Vitaly Buka <vitalybuka@google.com> | 2024-07-29 17:15:43 -0700 |
| commit | 7a06040dbe89cf54a898e88135a76ed6b5619443 (patch) | |
| tree | dab0e3c8217bb4af7a2f57037d49ee8d8a3a2f3a | |
| parent | 76605f5718e07bc0e551620a39a0853cb6fc81f5 (diff) | |
| download | llvm-users/vitalybuka/spr/main.update.zip llvm-users/vitalybuka/spr/main.update.tar.gz llvm-users/vitalybuka/spr/main.update.tar.bz2 | |
[𝘀𝗽𝗿] changes to main this commit is based onusers/vitalybuka/spr/main.update
Created using spr 1.3.4
[skip ci]
| -rw-r--r-- | clang/docs/MemorySanitizer.rst | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/clang/docs/MemorySanitizer.rst b/clang/docs/MemorySanitizer.rst index bcc6cc8..024bed2 100644 --- a/clang/docs/MemorySanitizer.rst +++ b/clang/docs/MemorySanitizer.rst @@ -8,11 +8,18 @@ MemorySanitizer Introduction ============ -MemorySanitizer is a detector of uninitialized reads. It consists of a +MemorySanitizer is a detector of uninitialized memory use. It consists of a compiler instrumentation module and a run-time library. Typical slowdown introduced by MemorySanitizer is **3x**. +Here is a not comprehensive list cases when MemorySanitizer will report an error: + +* Conditional branches controlled by uninitialized values. +* Using uninitalized pointers for memory accesses. +* Passing and returning uninitialized values to/from function calls. Can be disabled with ``-fno-sanitize-memory-param-retval``. +* Passing uninitialized data into libc calls. + How to build ============ |