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cmake: only enable UBSAN for clang versions >= 9

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Markus F.X.J. Oberhumer
2024-04-02 09:21:56 +02:00
parent 3538d796a7
commit 0f9315383c
3 changed files with 6 additions and 10 deletions
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src/check/dt_check.cpp
-8
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@@ -384,14 +384,6 @@ static noinline bool shall_test_float_division_by_zero(void) {
#if defined(__clang__) && defined(__FAST_MATH__) && defined(__INTEL_LLVM_COMPILER)
// warning: comparison with NaN always evaluates to false in fast floating point modes
fprintf(stderr, "upx: WARNING: ignoring %s: __FAST_MATH__\n", envvar);
#elif defined(__clang__) && (__clang_major__ < 9) && defined(__SANITIZE_UNDEFINED_BEHAVIOR__)
// UBSAN problem with clang < 9
// @COMPILER_BUG @CLANG_BUG @UBSAN_BUG
fprintf(stderr, "upx: WARNING: ignoring %s: UBSAN\n", envvar);
#elif defined(__clang__) && (__clang_major__ < 8)
// NOTE: cannot reliably detect __SANITIZE_UNDEFINED_BEHAVIOR__ on older clang versions
// @COMPILER_BUG @CLANG_BUG @UBSAN_BUG
fprintf(stderr, "upx: WARNING: ignoring %s: clang %d\n", envvar, __clang_major__);
#else
result = true;
#endif