compiler-rt/test/asan/TestCases/global-overflow.cpp

   1 // RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s
   2 // RUN: %clangxx_asan -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s
   3 // RUN: %clangxx_asan -O2 %s -o %t && not %run %t 2>&1 | FileCheck %s
   4 // RUN: %clangxx_asan -O3 %s -o %t && not %run %t 2>&1 | FileCheck %s
   5
   6 #include <string.h>
   7 int main(int argc, char **argv) {
   8   static char XXX[10];
   9   static char YYY[10];
  10   static char ZZZ[10];
  11   memset(XXX, 0, 10);
  12   memset(YYY, 0, 10);
  13   memset(ZZZ, 0, 10);
  14   int res = YYY[argc * 10];  // BOOOM
  15   // CHECK: {{READ of size 1 at 0x.* thread T0}}
  16   // CHECK: {{    #0 0x.* in main .*global-overflow.cpp:}}[[@LINE-2]]
  17   // CHECK: {{0x.* is located 0 bytes after global variable}}
  18   // CHECK:   {{.*YYY.* of size 10}}
  19   res += XXX[argc] + ZZZ[argc];
  20   return res;
  21 }