../../src/demos/signal.c: In function ‘custom_logger’:
../../src/demos/signal.c:20:5: warning: call to ‘fprintf’ from within signal handler [CWE-479] [-Wanalyzer-unsafe-call-within-signal-handler]
   20 |     fprintf(stderr, "LOG: %s", msg);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  ‘main’: event 1
    |
    |   32 |   signal(SIGINT, handler);
    |      |   ^~~~~~~~~~~~~~~~~~~~~~~
    |      |   |
    |      |   (1) registering signal handler
    |
[...time passes...]
  event 2
    |
    |cc1:
    | (2): signal delivered to process
    |
    +--> ‘handler’: event 3
           |
           |   25 |   custom_logger("got signal");
           |      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~
           |      |   |
           |      |   (3) calling ‘custom_logger’ from ‘handler’
           |
           +--> ‘custom_logger’: event 4
                  |
                  |   20 |     fprintf(stderr, "LOG: %s", msg);
                  |      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                  |      |     |
                  |      |     (4) call to ‘fprintf’ from within signal handler
                  |