MaskRay added a comment. > Currenly both Clang and GCC support the following set of flags that control
code gen of signed overflow: > [...] > Howerver, clang ignores these flags for __builtin_abs(int) and its > higher-width versions, so passing minimum integer value always causes poison. This paragraph reads as if GCC emits a trap for `__builtin_abs` in -ftrapv mode, but it doesn't. That said, its `-fsanitize=signed-integer-overflow` does handle `__builtin_abs`. CHANGES SINCE LAST ACTION https://reviews.llvm.org/D156821/new/ https://reviews.llvm.org/D156821 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
