| 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 | #include <libc-diag.h> |
| 11 | |
| 12 | static void |
| 13 | sig_handler (int signum) |
| 14 | { |
| 15 | pid_t child = fork (); |
| 16 | if (child == 0) |
| 17 | exit (0); |
| 18 | TEMP_FAILURE_RETRY (waitpid (child, NULL, 0)); |
| 19 | } |
| 20 | |
| 21 | static int |
| 22 | do_test (void) |
| 23 | { |
| 24 | pid_t parent = getpid (); |
| 25 | |
| 26 | struct sigaction action = { .sa_handler = sig_handler }; |
| 27 | sigemptyset (&action.sa_mask); |
| 28 | |
| 29 | DIAG_PUSH_NEEDS_COMMENT; |
| 30 | DIAG_IGNORE_NEEDS_COMMENT (10, "-Wunused-result"); |
| 31 | /* The result of malloc is deliberately ignored, so do not warn |
| 32 | about that. */ |
| 33 | malloc (size: sizeof (int)); |
| 34 | DIAG_POP_NEEDS_COMMENT; |
| 35 | |
| 36 | if (sigaction (SIGALRM, act: &action, NULL) != 0) |
| 37 | { |
| 38 | puts (s: "sigaction failed"); |
| 39 | return 1; |
| 40 | } |
| 41 | |
| 42 | /* Create a child that sends the signal to be caught. */ |
| 43 | pid_t child = fork (); |
| 44 | if (child == 0) |
| 45 | { |
| 46 | if (kill (pid: parent, SIGALRM) == -1) |
| 47 | perror ("kill"); |
| 48 | exit (0); |
| 49 | } |
| 50 | |
| 51 | TEMP_FAILURE_RETRY (waitpid (child, NULL, 0)); |
| 52 | |
| 53 | return 0; |
| 54 | } |
| 55 | |
| 56 | #define TEST_FUNCTION do_test () |
| 57 | #include "../test-skeleton.c" |
| 58 |