File: dtor-derived-class.cpp

package info (click to toggle)
llvm-toolchain-13 1%3A13.0.1-11
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,418,840 kB
  • sloc: cpp: 5,290,826; ansic: 996,570; asm: 544,593; python: 188,212; objc: 72,027; lisp: 30,291; f90: 25,395; sh: 24,898; javascript: 9,780; pascal: 9,398; perl: 7,484; ml: 5,432; awk: 3,523; makefile: 2,913; xml: 953; cs: 573; fortran: 539
file content (39 lines) | stat: -rw-r--r-- 1,197 bytes parent folder | download | duplicates (18)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
// RUN: %clangxx_msan %s -O0 -fsanitize=memory -fsanitize-memory-use-after-dtor -o %t && MSAN_OPTIONS=poison_in_dtor=1 %run %t >%t.out 2>&1
// RUN: %clangxx_msan %s -O1 -fsanitize=memory -fsanitize-memory-use-after-dtor -o %t && MSAN_OPTIONS=poison_in_dtor=1 %run %t >%t.out 2>&1
// RUN: %clangxx_msan %s -O2 -fsanitize=memory -fsanitize-memory-use-after-dtor -o %t && MSAN_OPTIONS=poison_in_dtor=1  %run %t >%t.out 2>&1

#include <sanitizer/msan_interface.h>
#include <assert.h>

struct Base {
  int x;
  Base() { x = 5; }
  virtual ~Base() {}
};

struct Derived : public Base {
  int y;
  Derived() { y = 10; }
  ~Derived() {}
};

int main() {
  Derived *d = new Derived();
  d->~Derived();

  // Verify that local pointer is unpoisoned, and that the object's
  // members are.
  assert(__msan_test_shadow(&d, sizeof(d)) == -1);
  assert(__msan_test_shadow(&d->x, sizeof(d->x)) != -1);
  assert(__msan_test_shadow(&d->y, sizeof(d->y)) != -1);

  Base *b = new Derived();
  b->~Base();

  // Verify that local pointer is unpoisoned, and that the object's
  // members are.
  assert(__msan_test_shadow(&b, sizeof(b)) == -1);
  assert(__msan_test_shadow(&b->x, sizeof(b->x)) != -1);

  return 0;
}