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| author | Sami Tolvanen <samitolvanen@google.com> | 2022-09-19 23:06:18 +0000 |
|---|---|---|
| committer | Sami Tolvanen <samitolvanen@google.com> | 2022-10-26 20:38:37 +0000 |
| commit | 1aad641c793090b4d036c03e737df2ebe2c32c57 (patch) | |
| tree | 5c195c2b54e067d0076a8807c398cc49a0116fab /cross-project-tests | |
| parent | 2234f582c91e8511443f3e71b6e06abe3e47db4b (diff) | |
| download | llvm-1aad641c793090b4d036c03e737df2ebe2c32c57.tar.gz | |
[Clang][Sema] Add -Wcast-function-type-strict
Clang supports indirect call Control-Flow Integrity (CFI) sanitizers
(e.g. -fsanitize=cfi-icall), which enforce an exact type match between
a function pointer and the target function. Unfortunately, Clang
doesn't provide diagnostics that would help developers avoid function
type casts that lead to runtime CFI failures. -Wcast-function-type,
while helpful, only warns about ABI incompatibility, which isn't
sufficient with CFI.
Add -Wcast-function-type-strict, which checks for a strict type
compatibility in function type casts and helps warn about casts that
can potentially lead to CFI failures.
Reviewed By: nickdesaulniers, aaron.ballman
Differential Revision: https://reviews.llvm.org/D134831
Diffstat (limited to 'cross-project-tests')
0 files changed, 0 insertions, 0 deletions