1 // RUN: %clang_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s 2 #include "test.h" 3 #include <signal.h> 4 #include <sys/types.h> 5 6 static void handler(int, siginfo_t*, void*) { 7 // CHECK: WARNING: ThreadSanitizer: signal-unsafe call inside of a signal 8 // CHECK: #0 malloc 9 // CHECK: #{{(1|2)}} handler(int, {{(__)?}}siginfo{{(_t)?}}*, void*) {{.*}}signal_malloc.cc:[[@LINE+2]] 10 // CHECK: SUMMARY: ThreadSanitizer: signal-unsafe call inside of a signal{{.*}}handler 11 volatile char *p = (char*)malloc(1); 12 p[0] = 0; 13 free((void*)p); 14 } 15 16 int main() { 17 struct sigaction act = {}; 18 act.sa_sigaction = &handler; 19 sigaction(SIGPROF, &act, 0); 20 kill(getpid(), SIGPROF); 21 sleep(1); // let the signal handler run 22 return 0; 23 } 24 25
