1 // RUN: %clangxx_msan -O0 %s -o %t && %run %t 2 // RUN: %clangxx_msan -DPOSITIVE -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s 3 // REQUIRES: x86_64-target-arch 4 5 #include <emmintrin.h> 6 7 int to_int(double v) { 8 __m128d t = _mm_set_sd(v); 9 int x = _mm_cvtsd_si32(t); 10 return x; 11 // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value 12 // CHECK: #{{.*}} in to_int{{.*}}vector_cvt.cc:[[@LINE-3]] 13 } 14 15 int main() { 16 #ifdef POSITIVE 17 double v; 18 #else 19 double v = 1.1; 20 #endif 21 double* volatile p = &v; 22 int x = to_int(*p); 23 return !x; 24 } 25
