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| author | Vlad Tsyrklevich <vlad@tsyrklevich.net> | 2017-10-31 22:39:44 +0000 |
|---|---|---|
| committer | Vlad Tsyrklevich <vlad@tsyrklevich.net> | 2017-10-31 22:39:44 +0000 |
| commit | 746fd88cc65883572b7602dc7b1f9e74462fd451 (patch) | |
| tree | 0df935811a2170ba214956d0d703276504999c5f /include/clang/Frontend/CodeGenOptions.def | |
| parent | a934273b7cd28c48745e4c5a122ca3a505ab2028 (diff) | |
[CFI] Add CFI-icall pointer type generalization
Summary:
This change allows generalizing pointers in type signatures used for
cfi-icall by enabling the -fsanitize-cfi-icall-generalize-pointers flag.
This works by 1) emitting an additional generalized type signature
metadata node for functions and 2) llvm.type.test()ing for the
generalized type for translation units with the flag specified.
This flag is incompatible with -fsanitize-cfi-cross-dso because it would
require emitting twice as many type hashes which would increase artifact
size.
Reviewers: pcc, eugenis
Reviewed By: pcc
Subscribers: kcc
Differential Revision: https://reviews.llvm.org/D39358
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@317044 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 8cac8e45c8..8f2aae2f14 100644 --- a/include/clang/Frontend/CodeGenOptions.def +++ b/include/clang/Frontend/CodeGenOptions.def @@ -154,6 +154,8 @@ CODEGENOPT(SanitizeMemoryUseAfterDtor, 1, 0) ///< Enable use-after-delete detect CODEGENOPT(SanitizeCfiCrossDso, 1, 0) ///< Enable cross-dso support in CFI. CODEGENOPT(SanitizeMinimalRuntime, 1, 0) ///< Use "_minimal" sanitizer runtime for ///< diagnostics. +CODEGENOPT(SanitizeCfiICallGeneralizePointers, 1, 0) ///< Generalize pointer types in + ///< CFI icall function signatures CODEGENOPT(SanitizeCoverageType, 2, 0) ///< Type of sanitizer coverage ///< instrumentation. CODEGENOPT(SanitizeCoverageIndirectCalls, 1, 0) ///< Enable sanitizer coverage |