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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 | 440c0242b3e8488d6c6ba31e692c87fdd47fb0af (patch) | |
| tree | 2ae49fc587a397c9241494134f353f982fcefab1 /lib/ubsan_minimal/ubsan.syms.extra | |
| parent | 79654fd7716284ec881606e177a409608e8c4ede (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/compiler-rt/trunk@312029 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/ubsan_minimal/ubsan.syms.extra')
| -rw-r--r-- | lib/ubsan_minimal/ubsan.syms.extra | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/ubsan_minimal/ubsan.syms.extra b/lib/ubsan_minimal/ubsan.syms.extra new file mode 100644 index 000000000..7f8be6944 --- /dev/null +++ b/lib/ubsan_minimal/ubsan.syms.extra @@ -0,0 +1 @@ +__ubsan_* |