1 // RUN: %check_clang_tidy %s bugprone-signal-handler %t \ 2 // RUN: -config='{CheckOptions: \ 3 // RUN: {bugprone-signal-handler.AsyncSafeFunctionSet: "POSIX"}}' \ 4 // RUN: -- -isystem %clang_tidy_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)12void handler_bad(int) { 13 printf("1234"); 14 // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: standard function 'printf' may not be asynchronous-safe; calling it from a signal handler may be dangerous [bugprone-signal-handler] 15 } 16 handler_good(int)17void 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(void)26void test(void) { 27 signal(SIGINT, handler_good); 28 signal(SIGINT, handler_bad); 29 } 30