regress/lib/libc/setjmp/jmptest.c

   1 /*      $NetBSD: jmptest.c,v 1.7 2002/02/21 07:38:18 itojun Exp $       */
   2
   3 /*
   4  * Copyright (c) 1994 Christopher G. Demetriou
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *          This product includes software developed for the
  18  *          NetBSD Project.  See http://www.NetBSD.org/ for
  19  *          information about NetBSD.
  20  * 4. The name of the author may not be used to endorse or promote products
  21  *    derived from this software without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  24  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  25  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  26  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  27  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  28  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  29  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  30  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  31  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  32  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33  *
  34  * <<Id: LICENSE,v 1.2 2000/06/14 15:57:33 cgd Exp>>
  35  */
  36
  37 #include <sys/types.h>
  38 #include <setjmp.h>
  39 #include <signal.h>
  40 #include <stdio.h>
  41 #include <stdlib.h>
  42 #include <string.h>
  43 #include <unistd.h>
  44
  45 #if (TEST_SETJMP + TEST_U_SETJMP + TEST_SIGSETJMP) != 1
  46 #error one of TEST_SETJMP, TEST_U_SETJMP, or TEST_SIGSETJMP must be defined
  47 #endif
  48
  49 #ifdef TEST_SETJMP
  50 #define BUF             jmp_buf
  51 #define SET(b, m)       setjmp(b)
  52 #define JMP(b, v)       longjmp(b, v)
  53 #endif
  54
  55 #ifdef TEST_U_SETJMP
  56 #define BUF             jmp_buf
  57 #define SET(b, m)       _setjmp(b)
  58 #define JMP(b, v)       _longjmp(b, v)
  59 #endif
  60
  61 #ifdef TEST_SIGSETJMP
  62 #define BUF             sigjmp_buf
  63 #define SET(b, m)       sigsetjmp(b, m)
  64 #define JMP(b, v)       siglongjmp(b, v)
  65 #endif
  66
  67 int expectsignal;
  68
  69 void
  70 aborthandler(signo)
  71         int signo;
  72 {
  73
  74         if (expectsignal)
  75                 exit(0);
  76         else
  77                 errx(1, "kill(SIGABRT) succeeded");
  78 }
  79
  80 int
  81 main(argc, argv)
  82         int argc;
  83         char *argv[];
  84 {
  85         struct sigaction sa;
  86         BUF jb;
  87         sigset_t ss;
  88         int i, x;
  89
  90         i = getpid();
  91
  92 #ifdef TEST_SETJMP
  93         expectsignal = 0;
  94 #endif
  95 #ifdef TEST_U_SETJMP
  96         expectsignal = 1;
  97 #endif
  98 #ifdef TEST_SIGSETJMP
  99         if (argc != 2 ||
 100             (strcmp(argv[1], "save") && strcmp(argv[1], "nosave"))) {
 101                 fprintf(stderr, "usage: %s [save|nosave]\n", argv[0]);
 102                 exit(1);
 103         }
 104         expectsignal = (strcmp(argv[1], "save") != 0);
 105 #endif
 106
 107         sa.sa_handler = aborthandler;
 108         sigemptyset(&sa.sa_mask);
 109         sa.sa_flags = 0;
 110         if (sigaction(SIGABRT, &sa, NULL) == -1)
 111                 err(1, "sigaction failed");
 112
 113         if (sigemptyset(&ss) == -1)
 114                 err(1, "sigemptyset failed");
 115         if (sigaddset(&ss, SIGABRT) == -1)
 116                 err(1, "sigaddset failed");
 117         if (sigprocmask(SIG_BLOCK, &ss, NULL) == -1)
 118                 err(1, "sigprocmask (1) failed");
 119
 120         x = SET(jb, !expectsignal);
 121         if (x != 0) {
 122                 if (x != i)
 123                         errx(1, "setjmp returned wrong value");
 124
 125                 kill(i, SIGABRT);
 126                 if (expectsignal)
 127                         errx(1, "kill(SIGABRT) failed");
 128                 else
 129                         exit(0);
 130         }
 131
 132         if (sigprocmask(SIG_UNBLOCK, &ss, NULL) == -1)
 133                 err(1, "sigprocmask (2) failed");
 134
 135         JMP(jb, i);
 136
 137         errx(1, "jmp failed");
 138 }