1 // RUN: %clangxx_msan %s -fsanitize=memory -fsanitize-memory-use-after-dtor -o %t && not %run %t >%t.out 2>&1
2 // RUN: FileCheck %s --check-prefix=CHECK-UAD < %t.out
3 
4 // RUN: %clangxx_msan %s -O1 -fsanitize=memory -fsanitize-memory-use-after-dtor -o %t && not %run %t >%t.out 2>&1
5 // RUN: FileCheck %s --check-prefix=CHECK-UAD < %t.out
6 
7 // RUN: %clangxx_msan %s -O2 -fsanitize=memory -fsanitize-memory-use-after-dtor -o %t && not %run %t >%t.out 2>&1
8 // RUN: FileCheck %s --check-prefix=CHECK-UAD < %t.out
9 
10 // RUN: %clangxx_msan %s -O1 -fsanitize=memory -fsanitize-memory-use-after-dtor -fsanitize-memory-track-origins -o %t && not %run %t >%t.out 2>&1
11 // RUN: FileCheck %s --check-prefixes=CHECK-UAD,CHECK-ORIGINS < %t.out
12 
13 // RUN: %clangxx_msan %s -fno-sanitize-memory-use-after-dtor -o %t && not %run %t > %t.out 2>&1
14 // RUN: FileCheck %s --check-prefix=CHECK-UAD-OFF < %t.out
15 
16 #include <sanitizer/msan_interface.h>
17 #include <assert.h>
18 #include <stdio.h>
19 #include <new>
20 
21 struct Simple {
22   int x_;
23   Simple() {
24     x_ = 5;
25   }
26   ~Simple() {
27     x_ += 1;
28   }
29 };
30 
31 int main() {
32   unsigned long buf[1];
33   assert(sizeof(Simple) <= sizeof(buf));
34 
35   Simple *s = new(&buf) Simple();
36   s->~Simple();
37 
38   fprintf(stderr, "\n");  // Need output to parse for CHECK-UAD-OFF case
39   return s->x_;
40 
41   // CHECK-UAD: WARNING: MemorySanitizer: use-of-uninitialized-value
42   // CHECK-UAD: {{#0 0x.* in main.*use-after-dtor.cpp:}}[[@LINE-3]]
43 
44   // CHECK-ORIGINS: Memory was marked as uninitialized
45   // CHECK-ORIGINS: {{#0 0x.* in __sanitizer_dtor_callback}}
46   // CHECK-ORIGINS: {{#1 0x.* in .*~Simple}}
47 
48   // CHECK-UAD: SUMMARY: MemorySanitizer: use-of-uninitialized-value {{.*main}}
49   // CHECK-UAD-OFF-NOT: SUMMARY: MemorySanitizer: use-of-uninitialized-value
50 }
51