Bug path

‘main’: events 1-2
14int main(int argc, const char *argv)
^~~~
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(1) entry to ‘main’
15{
16 signal(SIGINT, handler); /* { dg-message "registering 'handler' as signal handler" } */
~~~~~~~~~~~~~~~~~~~~~~~
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(2) registering ‘handler’ as signal handler
event 3
(3): later on, when the signal is delivered to the process
‘handler’: events 4-5
9void handler(int signum)
^~~~~~~
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(4) entry to ‘handler’
10{
11 fprintf(stderr, "LOG: %i", signum); /* { dg-warning "call to 'fprintf' from within signal handler" } */
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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(5) call to ‘fprintf’ from within signal handler