| // Check that 8-byte store updates origin for the full store range. |
| // RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && not %run %t >%t.out 2>&1 |
| // RUN: FileCheck %s < %t.out && FileCheck %s < %t.out |
| // RUN: %clangxx_msan -fsanitize-memory-track-origins -O2 %s -o %t && not %run %t >%t.out 2>&1 |
| // RUN: FileCheck %s < %t.out && FileCheck %s < %t.out |
| |
| #include <sanitizer/msan_interface.h> |
| |
| int main() { |
| uint64_t *volatile p = new uint64_t; |
| uint64_t *volatile q = new uint64_t; |
| *p = *q; |
| char *z = (char *)p; |
| return z[6]; |
| // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value |
| // CHECK: in main {{.*}}origin-store-long.cpp:[[@LINE-2]] |
| |
| // CHECK: Uninitialized value was created by a heap allocation |
| // CHECK: in main {{.*}}origin-store-long.cpp:[[@LINE-8]] |
| } |
| |
