gcc/testsuite/c-c++-common/asan/strlen-overflow-1.c

   1 /* { dg-do run } */
   2 /* { dg-skip-if "" { *-*-* } { "-flto" } { "" } } */
   3 /* { dg-shouldfail "asan" } */
   4
   5 #include <sanitizer/asan_interface.h>
   6
   7 char a[2] = "0";
   8
   9 #ifdef __cplusplus
  10 extern "C"
  11 #endif
  12 __SIZE_TYPE__
  13 strlen (const char *p);
  14
  15 int main () {
  16   char *p = &a[0];
  17   asm ("" : "+r"(p));
  18   __asan_poison_memory_region ((char *)&a[1], 1);
  19   return __builtin_strlen (a) + 1;
  20 }
  21
  22 /* { dg-output "READ of size 2 at 0x\[0-9a-f\]+ thread T0.*(\n|\r\n|\r)" } */
  23 /* { dg-output "    #1 0x\[0-9a-f\]+ +(in _*main (\[^\n\r]*strlen-overflow-1.c:19|\[^\n\r]*:0)|\[(\]).*(\n|\r\n|\r)" } */
  24 /* { dg-output "\[^\n\r]*0x\[0-9a-f\]+ is located 0 bytes to the right of global variable" } */