usr/src/test/libc-tests/tests/quick_exit_order.c

   1 /*
   2  * This file and its contents are supplied under the terms of the
   3  * Common Development and Distribution License ("CDDL"), version 1.0.
   4  * You may only use this file in accordance with the terms of version
   5  * 1.0 of the CDDL.
   6  *
   7  * A full copy of the text of the CDDL should have accompanied this
   8  * source.  A copy of the CDDL is also available via the Internet at
   9  * http://www.illumos.org/license/CDDL.
  10  */
  11
  12 /*
  13  * Copyright 2016 Joyent, Inc.
  14  */
  15
  16 /*
  17  * Register functions with quick_exit() and verify that we honor the expected
  18  * function call value. We facilitate this by having a global integer and
  19  * modifying it to various values in subsequent functions. If we're not called
  20  * in reverse order, we should spot the differences.
  21  */
  22
  23 #include <stdlib.h>
  24 #include <sys/debug.h>
  25
  26 static int qeo_val = 5;
  27
  28 static void
  29 qeo_fifth(void)
  30 {
  31         VERIFY3S(qeo_val, ==, 5);
  32         qeo_val--;
  33 }
  34
  35 static void
  36 qeo_fourth(void)
  37 {
  38         VERIFY3S(qeo_val, ==, 4);
  39         qeo_val--;
  40 }
  41
  42 static void
  43 qeo_third(void)
  44 {
  45         VERIFY3S(qeo_val, ==, 3);
  46         qeo_val--;
  47 }
  48
  49 static void
  50 qeo_second(void)
  51 {
  52         VERIFY3S(qeo_val, ==, 2);
  53         qeo_val--;
  54 }
  55
  56 static void
  57 qeo_first(void)
  58 {
  59         VERIFY3S(qeo_val, ==, 1);
  60         qeo_val--;
  61 }
  62
  63 static void
  64 qeo_zero(void)
  65 {
  66         VERIFY3S(qeo_val, ==, 0);
  67 }
  68
  69 int
  70 main(void)
  71 {
  72         VERIFY0(at_quick_exit(qeo_zero));
  73         VERIFY0(at_quick_exit(qeo_first));
  74         VERIFY0(at_quick_exit(qeo_second));
  75         VERIFY0(at_quick_exit(qeo_third));
  76         VERIFY0(at_quick_exit(qeo_fourth));
  77         VERIFY0(at_quick_exit(qeo_fifth));
  78         quick_exit(0);
  79         abort();
  80 }