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| author | Vitaly Buka <vitalybuka@google.com> | 2022-04-19 18:42:17 -0700 |
|---|---|---|
| committer | Vitaly Buka <vitalybuka@google.com> | 2022-04-21 14:02:02 -0700 |
| commit | b580c0e019826074a22e2676dd0889a57d8558fb (patch) | |
| tree | 5983865acb48b3aca9db2b864e4800d0a3a6392c /clang/docs/MemorySanitizer.rst | |
| parent | 311929267d296ff2bf0ca4488223ba7e79ed4acd (diff) | |
| download | llvm-b580c0e019826074a22e2676dd0889a57d8558fb.zip llvm-b580c0e019826074a22e2676dd0889a57d8558fb.tar.gz llvm-b580c0e019826074a22e2676dd0889a57d8558fb.tar.bz2 | |
[msan] Update Use-after-destruction documentation
Reviewed By: kda, eugenis
Differential Revision: https://reviews.llvm.org/D124058
Diffstat (limited to 'clang/docs/MemorySanitizer.rst')
| -rw-r--r-- | clang/docs/MemorySanitizer.rst | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/clang/docs/MemorySanitizer.rst b/clang/docs/MemorySanitizer.rst index 5f387ca..bcc6cc8 100644 --- a/clang/docs/MemorySanitizer.rst +++ b/clang/docs/MemorySanitizer.rst @@ -162,17 +162,16 @@ not intermediate stores. Use-after-destruction detection =============================== -You can enable experimental use-after-destruction detection in MemorySanitizer. -After invocation of the destructor, the object will be considered no longer -readable, and using underlying memory will lead to error reports in runtime. -Refer to the standard for `lifetime <https://eel.is/c++draft/basic.life#1>`_ definition. +MemorySanitizer includes use-after-destruction detection. After invocation of +the destructor, the object will be considered no longer readable, and using +underlying memory will lead to error reports in runtime. Refer to the standard +for `lifetime <https://eel.is/c++draft/basic.life#1>`_ definition. -This feature is still experimental, in order to enable it at runtime you need -to: +This feature can be disabled with either: -#. Pass addition Clang option ``-fsanitize-memory-use-after-dtor`` during +#. Pass addition Clang option ``-fno-sanitize-memory-use-after-dtor`` during compilation. -#. Set environment variable `MSAN_OPTIONS=poison_in_dtor=1` before running +#. Set environment variable `MSAN_OPTIONS=poison_in_dtor=0` before running the program. Handling external code |