malloc/tst-mallocfork.c

   1 /* Derived from the test case in
   2    https://sourceware.org/bugzilla/show_bug.cgi?id=838.  */
   3 #include <assert.h>
   4 #include <errno.h>
   5 #include <stdio.h>
   6 #include <stdlib.h>
   7 #include <unistd.h>
   8 #include <sys/types.h>
   9 #include <sys/wait.h>
  10
  11 static void
  12 sig_handler (int signum)
  13 {
  14   pid_t child = fork ();
  15   if (child == 0)
  16     exit (0);
  17   TEMP_FAILURE_RETRY (waitpid (child, NULL, 0));
  18 }
  19
  20 static int
  21 do_test (void)
  22 {
  23   pid_t parent = getpid ();
  24
  25   struct sigaction action = { .sa_handler = sig_handler };
  26   sigemptyset (&action.sa_mask);
  27
  28   malloc (sizeof (int));
  29
  30   if (sigaction (SIGALRM, &action, NULL) != 0)
  31     {
  32       puts ("sigaction failed");
  33       return 1;
  34     }
  35
  36   /* Create a child that sends the signal to be caught.  */
  37   pid_t child = fork ();
  38   if (child == 0)
  39     {
  40       if (kill (parent, SIGALRM) == -1)
  41         perror ("kill");
  42       exit (0);
  43     }
  44
  45   TEMP_FAILURE_RETRY (waitpid (child, NULL, 0));
  46
  47   return 0;
  48 }
  49
  50 #define TEST_FUNCTION do_test ()
  51 #include "../test-skeleton.c"