File: global-overflow.cc

package info (click to toggle)
llvm-toolchain-3.9 1%3A3.9.1-9
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 441,144 kB
  • ctags: 428,836
  • sloc: cpp: 2,546,577; ansic: 538,318; asm: 119,677; objc: 103,316; python: 102,148; sh: 27,847; pascal: 5,626; ml: 5,510; perl: 5,293; lisp: 4,801; makefile: 2,177; xml: 686; cs: 362; php: 212; csh: 117
file content (21 lines) | stat: -rw-r--r-- 783 bytes parent folder | download | duplicates (14) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
 
// RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s
// RUN: %clangxx_asan -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s
// RUN: %clangxx_asan -O2 %s -o %t && not %run %t 2>&1 | FileCheck %s
// RUN: %clangxx_asan -O3 %s -o %t && not %run %t 2>&1 | FileCheck %s

#include <string.h>
int main(int argc, char **argv) {
  static char XXX[10];
  static char YYY[10];
  static char ZZZ[10];
  memset(XXX, 0, 10);
  memset(YYY, 0, 10);
  memset(ZZZ, 0, 10);
  int res = YYY[argc * 10];  // BOOOM
  // CHECK: {{READ of size 1 at 0x.* thread T0}}
  // CHECK: {{    #0 0x.* in main .*global-overflow.cc:}}[[@LINE-2]]
  // CHECK: {{0x.* is located 0 bytes to the right of global variable}}
  // CHECK:   {{.*YYY.* of size 10}}
  res += XXX[argc] + ZZZ[argc];
  return res;
}