File: vdtor.cpp

package info (click to toggle)
llvm-toolchain-3.8 1%3A3.8.1-24
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 379,280 kB
  • ctags: 388,501
  • sloc: cpp: 2,309,705; ansic: 477,070; objc: 100,918; asm: 97,974; python: 95,911; sh: 18,634; makefile: 7,294; perl: 5,584; ml: 5,460; pascal: 4,661; lisp: 2,548; xml: 686; cs: 350; php: 212; csh: 117
file content (56 lines) | stat: -rw-r--r-- 1,213 bytes parent folder | download | duplicates (5)
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
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
// RUN: %clangxx_cfi -o %t1 %s
// RUN: %expect_crash %t1 2>&1 | FileCheck --check-prefix=CFI %s

// RUN: %clangxx_cfi -DB32 -o %t2 %s
// RUN: %expect_crash %t2 2>&1 | FileCheck --check-prefix=CFI %s

// RUN: %clangxx_cfi -DB64 -o %t3 %s
// RUN: %expect_crash %t3 2>&1 | FileCheck --check-prefix=CFI %s

// RUN: %clangxx_cfi -DBM -o %t4 %s
// RUN: %expect_crash %t4 2>&1 | FileCheck --check-prefix=CFI %s

// RUN: %clangxx -o %t5 %s
// RUN: %t5 2>&1 | FileCheck --check-prefix=NCFI %s

// RUN: %clangxx_cfi_diag -o %t6 %s
// RUN: %t6 2>&1 | FileCheck --check-prefix=CFI-DIAG %s

// Tests that the CFI enforcement also applies to virtual destructor calls made
// via 'delete'.

// REQUIRES: cxxabi

#include <stdio.h>
#include "utils.h"

struct A {
  virtual ~A();
};

A::~A() {}

struct B {
  virtual ~B();
};

B::~B() {}

int main() {
  create_derivers<B>();

  A *a = new A;
  break_optimization(a);

  // CFI: 1
  // NCFI: 1
  fprintf(stderr, "1\n");

  // CFI-DIAG: runtime error: control flow integrity check for type 'B' failed during virtual call
  // CFI-DIAG-NEXT: note: vtable is of type '{{(struct )?}}A'
  delete (B *)a; // UB here

  // CFI-NOT: {{^2$}}
  // NCFI: {{^2$}}
  fprintf(stderr, "2\n");
}