stack-use-after-return.cc revision ec2ee9b51256b37ce637eee766fd9a454c02da2b 
1// XFAIL: *
2// RUN: %clangxx_asan -fsanitize=use-after-return -O0 %s -o %t && \
3// RUN:   %t 2>&1 | FileCheck %s
4// RUN: %clangxx_asan -fsanitize=use-after-return -O1 %s -o %t && \
5// RUN:   %t 2>&1 | FileCheck %s
6// RUN: %clangxx_asan -fsanitize=use-after-return -O2 %s -o %t && \
7// RUN:   %t 2>&1 | FileCheck %s
8// RUN: %clangxx_asan -fsanitize=use-after-return -O3 %s -o %t && \
9// RUN:   %t 2>&1 | FileCheck %s
10
11#include <stdio.h>
12
13__attribute__((noinline))
14char *Ident(char *x) {
15  fprintf(stderr, "1: %p\n", x);
16  return x;
17}
18
19__attribute__((noinline))
20char *Func1() {
21  char local;
22  return Ident(&local);
23}
24
25__attribute__((noinline))
26void Func2(char *x) {
27  fprintf(stderr, "2: %p\n", x);
28  *x = 1;
29  // CHECK: WRITE of size 1 {{.*}} thread T0
30  // CHECK:     #0{{.*}}Func2{{.*}}stack-use-after-return.cc:[[@LINE-2]]
31  // CHECK: is located {{.*}} in frame <{{.*}}Func1{{.*}}> of T0's stack
32}
33
34int main(int argc, char **argv) {
35  Func2(Func1());
36  return 0;
37}
38