gcc/testsuite/c-c++-common/tsan/free_race2.c

   1 /* { dg-shouldfail "tsan" } */
   2 /* { dg-additional-options "-fno-ipa-modref" } */
   3
   4 #include <stdlib.h>
   5
   6 void __attribute__((noinline)) foo(int *mem) {
   7   free(mem);
   8 }
   9
  10 void __attribute__((noinline)) bar(int *mem) {
  11   mem[0] = 42;
  12 }
  13
  14 int main() {
  15   int *mem = (int*)malloc(100);
  16   foo(mem);
  17   bar(mem);
  18   return 0;
  19 }
  20
  21 /* { dg-output "WARNING: ThreadSanitizer: heap-use-after-free.*(\n|\r\n|\r)" } */
  22 /* { dg-output "  Write of size 4.* by main thread:(\n|\r\n|\r)" } */
  23 /* { dg-output "    #0 bar.*" } */
  24 /* { dg-output "    #1 main .*" } */
  25 /* { dg-output "  Previous write of size 8 at .* by main thread:(\n|\r\n|\r)" } */
  26 /* { dg-output "    #0 free .*" } */
  27 /* { dg-output "    #\(1|2\) foo.*(\n|\r\n|\r)" } */
  28 /* { dg-output "    #\(2|3\) main .*" } */
  29