1 // Check that 8-byte store updates origin for the full store range.
2 // RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && not %run %t >%t.out 2>&1
3 // RUN: FileCheck %s < %t.out && FileCheck %s < %t.out
4 // RUN: %clangxx_msan -fsanitize-memory-track-origins -O2 %s -o %t && not %run %t >%t.out 2>&1
5 // RUN: FileCheck %s < %t.out && FileCheck %s < %t.out
6 
7 #include <sanitizer/msan_interface.h>
8 
9 int main() {
10   uint64_t *volatile p = new uint64_t;
11   uint64_t *volatile q = new uint64_t;
12   *p = *q;
13   char *z = (char *)p;
14   return z[6];
15 // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
16 // CHECK:   in main {{.*}}origin-store-long.cc:[[@LINE-2]]
17 
18 // CHECK:  Uninitialized value was created by a heap allocation
19 // CHECK:   in main {{.*}}origin-store-long.cc:[[@LINE-8]]
20 }
21 
22