gcc/testsuite/c-c++-common/asan/pr64820.c

   1 /* { dg-do run } */
   2 /* { dg-require-effective-target fstack_protector } */
   3 /* { dg-options "-fstack-protector-strong" } */
   4 /* { dg-set-target-env-var ASAN_OPTIONS "detect_stack_use_after_return=1" } */
   5 /* { dg-shouldfail "asan" } */
   6
   7 __attribute__((noinline))
   8 char *Ident(char *x) {
   9   return x;
  10 }
  11
  12 __attribute__((noinline))
  13 char *Func1() {
  14   char local[1 << 12];
  15   return Ident(local);
  16 }
  17
  18 __attribute__((noinline))
  19 void Func2(char *x) {
  20   *x = 1;
  21 }
  22 int main(int argc, char **argv) {
  23   Func2(Func1());
  24   return 0;
  25 }
  26
  27 /* { dg-output "AddressSanitizer: stack-use-after-return on address 0x\[0-9a-f\]+\[^\n\r]*(\n|\r\n|\r)" } */
  28 /* { dg-output "WRITE of size 1 at .* thread T0.*" } */
  29 /* { dg-output "    #0.*(Func2)?.*pr64820.(c:21)?.*" } */
  30 /* { dg-output "is located in stack of thread T0 at offset.*" } */
  31 /* { dg-output "\'local\' <== Memory access at offset 32 is inside this variable" } */