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| author | Evgeniy Stepanov <eugeni.stepanov@gmail.com> | 2017-08-29 20:03:51 +0000 |
|---|---|---|
| committer | Evgeniy Stepanov <eugeni.stepanov@gmail.com> | 2017-08-29 20:03:51 +0000 |
| commit | b4377ba533acae9ef51757bb3b215155bcd2b8d5 (patch) | |
| tree | 568dbbdac2a23c6f9996618ac544a8a002364e88 /include/clang/Frontend/CodeGenOptions.def | |
| parent | 5214ac8d2954efaa976ffe7f598980ade819e5dc (diff) | |
Minimal runtime for UBSan.
Summary:
An implementation of ubsan runtime library suitable for use in production.
Minimal attack surface.
* No stack traces.
* Definitely no C++ demangling.
* No UBSAN_OPTIONS=log_file=/path (very suid-unfriendly). And no UBSAN_OPTIONS in general.
* as simple as possible
Minimal CPU and RAM overhead.
* Source locations unnecessary in the presence of (split) debug info.
* Values and types (as in A+B overflows T) can be reconstructed from register/stack dumps, once you know what type of error you are looking at.
* above two items save 3% binary size.
When UBSan is used with -ftrap-function=abort, sometimes it is hard to reason about failures. This library replaces abort with a slightly more informative message without much extra overhead. Since ubsan interface in not stable, this code must reside in compiler-rt.
Reviewers: pcc, kcc
Subscribers: srhines, mgorny, aprantl, krytarowski, llvm-commits
Differential Revision: https://reviews.llvm.org/D36810
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@312029 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/clang/Frontend/CodeGenOptions.def')
| -rw-r--r-- | include/clang/Frontend/CodeGenOptions.def | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/clang/Frontend/CodeGenOptions.def b/include/clang/Frontend/CodeGenOptions.def index a806c48765..b58a5d5725 100644 --- a/include/clang/Frontend/CodeGenOptions.def +++ b/include/clang/Frontend/CodeGenOptions.def @@ -152,6 +152,8 @@ CODEGENOPT(SanitizeMemoryTrackOrigins, 2, 0) ///< Enable tracking origins in CODEGENOPT(SanitizeMemoryUseAfterDtor, 1, 0) ///< Enable use-after-delete detection ///< in MemorySanitizer CODEGENOPT(SanitizeCfiCrossDso, 1, 0) ///< Enable cross-dso support in CFI. +CODEGENOPT(SanitizeMinimalRuntime, 1, 0) ///< Use "_minimal" sanitizer runtime for + ///< diagnostics. CODEGENOPT(SanitizeCoverageType, 2, 0) ///< Type of sanitizer coverage ///< instrumentation. CODEGENOPT(SanitizeCoverageIndirectCalls, 1, 0) ///< Enable sanitizer coverage |