Bug path

test ‘test’: events 1-2 23 void test (void) ^~~~ | (1) entry to ‘test’ [...] 26 signal(SIGINT, int_handler); ~~~~~~~~~~~~~~~~~~~~~~~~~~~ | (2) registering ‘int_handler’ as signal handler

event 3 (3): later on, when the signal is delivered to the process

int_handler ‘int_handler’: events 4-5 18 static void int_handler(int signum) ^~~~~~~~~~~ | (4) entry to ‘int_handler’ 19 { 20 custom_logger("got signal"); ~~~~~~~~~~~~~~~~~~~~~~~~~~~ | (5) calling ‘custom_logger’ from ‘int_handler’ custom_logger ‘custom_logger’: events 6-7 13 void custom_logger(const char *msg) ^~~~~~~~~~~~~ | (6) entry to ‘custom_logger’ 14 { 15 fprintf(stderr, "LOG: %s", msg); /* { dg-warning "call to 'fprintf' from within signal handler" } */ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | (7) call to ‘fprintf’ from within signal handler