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(w: v); |
9 | int x = _mm_cvtsd_si32(a: t); |
10 | return x; |
11 | // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value |
12 | // CHECK: #{{.*}} in to_int{{.*}}vector_cvt.cpp:[[@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(v&: *p); |
23 | return !x; |
24 | } |
25 | |