1 // RUN: %check_clang_tidy %s bugprone-signal-handler %t \
2 // RUN: -config='{CheckOptions: \
3 // RUN:  [{key: bugprone-signal-handler.AsyncSafeFunctionSet, value: "POSIX"}]}' \
4 // RUN: -- -isystem %S/Inputs/Headers
5 
6 #include "signal.h"
7 #include "stdlib.h"
8 #include "stdio.h"
9 #include "string.h"
10 #include "unistd.h"
11 
handler_bad(int)12 void handler_bad(int) {
13   printf("1234");
14   // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: 'printf' may not be asynchronous-safe; calling it from a signal handler may be dangerous [bugprone-signal-handler]
15 }
16 
handler_good(int)17 void handler_good(int) {
18   abort();
19   _Exit(0);
20   _exit(0);
21   quick_exit(0);
22   signal(0, SIG_DFL);
23   memcpy((void*)10, (const void*)20, 1);
24 }
25 
test()26 void test() {
27   signal(SIGINT, handler_good);
28   signal(SIGINT, handler_bad);
29 }
30