| // RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && not %run %t >%t.out 2>&1 |
| // RUN: 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 |
| |
| // This test relies on realloc from 100 to 101 being done in-place. |
| |
| #include <stdlib.h> |
| int main(int argc, char **argv) { |
| char *p = (char *)malloc(100); |
| p = (char *)realloc(p, 101); |
| char x = p[100]; |
| free(p); |
| return x; |
| // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value |
| // CHECK: {{#0 0x.* in main .*realloc-origin.cpp:}}[[@LINE-2]] |
| |
| // CHECK: Uninitialized value was created by a heap allocation |
| // CHECK: {{#0 0x.* in .*realloc}} |
| // CHECK: {{#1 0x.* in main .*realloc-origin.cpp:}}[[@LINE-9]] |
| } |
