test/tsan/signal_malloc.cc

   1 // RUN: %clang_tsan -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s
   2 #include <stdio.h>
   3 #include <stdlib.h>
   4 #include <signal.h>
   5 #include <sys/types.h>
   6 #include <unistd.h>
   7
   8 static void handler(int, siginfo_t*, void*) {
   9   // CHECK: WARNING: ThreadSanitizer: signal-unsafe call inside of a signal
  10   // CHECK:     #0 malloc
  11   // CHECK:     #{{(1|2)}} handler(int, siginfo{{(_t)?}}*, void*) {{.*}}signal_malloc.cc:[[@LINE+2]]
  12   // CHECK: SUMMARY: ThreadSanitizer: signal-unsafe call inside of a signal{{.*}}handler
  13   volatile char *p = (char*)malloc(1);
  14   p[0] = 0;
  15   free((void*)p);
  16 }
  17
  18 int main() {
  19   struct sigaction act = {};
  20   act.sa_sigaction = &handler;
  21   sigaction(SIGPROF, &act, 0);
  22   kill(getpid(), SIGPROF);
  23   sleep(1);
  24   return 0;
  25 }
  26