1// RUN: %clangxx_msan -m64 -O0 %s -o %t && not %run %t >%t.out 2>&1
2// RUN: FileCheck %s < %t.out
3// RUN: %clangxx_msan -m64 -O1 %s -o %t && not %run %t >%t.out 2>&1
4// RUN: FileCheck %s < %t.out
5// RUN: %clangxx_msan -m64 -O2 %s -o %t && not %run %t >%t.out 2>&1
6// RUN: FileCheck %s < %t.out
7// RUN: %clangxx_msan -m64 -O3 %s -o %t && not %run %t >%t.out 2>&1
8// RUN: FileCheck %s < %t.out
9
10// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O0 %s -o %t && not %run %t >%t.out 2>&1
11// RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
12// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O1 %s -o %t && not %run %t >%t.out 2>&1
13// RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
14// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O2 %s -o %t && not %run %t >%t.out 2>&1
15// RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
16// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O3 %s -o %t && not %run %t >%t.out 2>&1
17// RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
18
19#include <stdlib.h>
20int main(int argc, char **argv) {
21  int *volatile p = (int *)malloc(sizeof(int));
22  *p = 42;
23  free(p);
24
25  if (*p)
26    exit(0);
27  // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
28  // CHECK: {{#0 0x.* in main .*use-after-free.cc:}}[[@LINE-3]]
29
30  // CHECK-ORIGINS: Uninitialized value was created by a heap allocation
31  // CHECK-ORIGINS: {{#0 0x.* in .*free}}
32  // CHECK-ORIGINS: {{#1 0x.* in main .*use-after-free.cc:}}[[@LINE-9]]
33  return 0;
34}
35