gcc/testsuite/gcc.dg/plugin/diagnostic-test-paths-4.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-fdiagnostics-path-format=inline-events -fdiagnostics-show-caret -fdiagnostics-show-line-numbers" } */
   3 /* { dg-enable-nn-line-numbers "" } */
   4
   5 #include <stdio.h>
   6 #include <signal.h>
   7 #include <stdlib.h>
   8
   9 extern void body_of_program(void);
  10
  11 void custom_logger(const char *msg)
  12 {
  13   fprintf(stderr, "LOG: %s", msg); /* { dg-warning "call to 'fprintf' from within signal handler" } */
  14 }
  15
  16 static void int_handler(int signum)
  17 {
  18   custom_logger("got signal");
  19 }
  20
  21 static void register_handler ()
  22 {
  23   signal(SIGINT, int_handler);
  24 }
  25
  26 void test (void)
  27 {
  28   register_handler ();
  29   body_of_program();
  30 }
  31
  32 /* { dg-begin-multiline-output "" }
  33    NN |   fprintf(stderr, "LOG: %s", msg);
  34       |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  35   'test': events 1-2
  36     |
  37     |   NN | {
  38     |      | ^
  39     |      | |
  40     |      | (1) entering 'test'
  41     |   NN |   register_handler ();
  42     |      |   ~~~~~~~~~~~~~~~~~~~
  43     |      |   |
  44     |      |   (2) calling 'register_handler'
  45     |
  46     +--> 'register_handler': events 3-4
  47            |
  48            |   NN | {
  49            |      | ^
  50            |      | |
  51            |      | (3) entering 'register_handler'
  52            |   NN |   signal(SIGINT, int_handler);
  53            |      |   ~~~~~~~~~~~~~~~~~~~~~~~~~~~
  54            |      |   |
  55            |      |   (4) registering 'int_handler' as signal handler
  56            |
  57   event 5
  58     |
  59     |cc1:
  60     | (5): later on, when the signal is delivered to the process
  61     |
  62     +--> 'int_handler': events 6-7
  63            |
  64            |   NN | {
  65            |      | ^
  66            |      | |
  67            |      | (6) entering 'int_handler'
  68            |   NN |   custom_logger("got signal");
  69            |      |   ~~~~~~~~~~~~~~~~~~~~~~~~~~~
  70            |      |   |
  71            |      |   (7) calling 'custom_logger'
  72            |
  73            +--> 'custom_logger': events 8-9
  74                   |
  75                   |   NN | {
  76                   |      | ^
  77                   |      | |
  78                   |      | (8) entering 'custom_logger'
  79                   |   NN |   fprintf(stderr, "LOG: %s", msg);
  80                   |      |   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  81                   |      |   |
  82                   |      |   (9) calling 'fprintf'
  83                   |
  84    { dg-end-multiline-output "" } */