1// RUN: %clangxx_msan %s -fsanitize=memory -fsanitize-memory-use-after-dtor -o %t && %run %t >%t.out 2>&1
2// RUN: FileCheck %s < %t.out
3
4// RUN: %clangxx_msan %s -O1 -fsanitize=memory -fsanitize-memory-use-after-dtor -o %t && %run %t >%t.out 2>&1
5// RUN: FileCheck %s < %t.out
6
7// RUN: %clangxx_msan %s -O2 -fsanitize=memory -fsanitize-memory-use-after-dtor -o %t && %run %t >%t.out 2>&1
8// RUN: FileCheck %s < %t.out
9
10// RUN: %clangxx_msan %s -fsanitize=memory -fno-sanitize-memory-use-after-dtor -o %t && %run %t >%t.out 2>&1
11// RUN: FileCheck %s --check-prefix=CHECK-NO-FLAG < %t.out
12
13// RUN: %clangxx_msan -fsanitize=memory -fsanitize-memory-use-after-dtor %s -o %t && env MSAN_OPTIONS=poison_in_dtor=0 %run %t >%t.out 2>&1
14// RUN: FileCheck %s --check-prefix=CHECK-NO-FLAG < %t.out
15
16#include <sanitizer/msan_interface.h>
17#include <assert.h>
18#include <stdio.h>
19#include <new>
20
21struct Simple {
22 int x_;
23 Simple() {
24 x_ = 5;
25 }
26 ~Simple() { }
27};
28
29int main() {
30 unsigned long buf[1];
31 assert(sizeof(Simple) <= sizeof(buf));
32
33 // The placement new operator forces the object to be constructed in the
34 // memory location &buf. Since objects made in this way must be explicitly
35 // destroyed, there are no implicit calls inserted that would interfere with
36 // test behavior.
37 Simple *s = new(&buf) Simple();
38 s->~Simple();
39
40 if (__msan_test_shadow(x: s, size: sizeof(*s)) != -1)
41 printf(format: "s is poisoned\n");
42 else
43 printf(format: "s is not poisoned\n");
44 // CHECK: s is poisoned
45 // CHECK-NO-FLAG: s is not poisoned
46
47 return 0;
48}
49

source code of compiler-rt/test/msan/dtor-member.cpp