gdb/testsuite/gdb.reverse/until-reverse.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2008-2014 Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  17
  18 #ifdef vxworks
  19
  20 #  include <stdio.h>
  21
  22 /* VxWorks does not supply atoi.  */
  23 static int
  24 atoi (z)
  25      char *z;
  26 {
  27   int i = 0;
  28
  29   while (*z >= '0' && *z <= '9')
  30     i = i * 10 + (*z++ - '0');
  31   return i;
  32 }
  33
  34 /* I don't know of any way to pass an array to VxWorks.  This function
  35    can be called directly from gdb.  */
  36
  37 vxmain (arg)
  38 char *arg;
  39 {
  40   char *argv[2];
  41
  42   argv[0] = "";
  43   argv[1] = arg;
  44   main (2, argv, (char **) 0);
  45 }
  46
  47 #else /* ! vxworks */
  48 #  include <stdio.h>
  49 #  include <stdlib.h>
  50 #endif /* ! vxworks */
  51
  52 #ifdef PROTOTYPES
  53 extern int marker1 (void);
  54 extern int marker2 (int a);
  55 extern void marker3 (char *a, char *b);
  56 extern void marker4 (long d);
  57 #else
  58 extern int marker1 ();
  59 extern int marker2 ();
  60 extern void marker3 ();
  61 extern void marker4 ();
  62 #endif
  63
  64 /*
  65  *      This simple classical example of recursion is useful for
  66  *      testing stack backtraces and such.
  67  */
  68
  69 #ifdef PROTOTYPES
  70 int factorial(int);
  71
  72 int
  73 main (int argc, char **argv, char **envp)
  74 #else
  75 int
  76 main (argc, argv, envp)
  77 int argc;
  78 char *argv[], **envp;
  79 #endif
  80 {
  81     if (argc == 12345) {  /* an unlikely value < 2^16, in case uninited */ /* set breakpoint 6 here */
  82         fprintf (stderr, "usage:  factorial <number>\n");
  83         return 1;
  84     }
  85     printf ("%d\n", factorial (atoi ("6")));  /* set breakpoint 1 here */
  86     /* set breakpoint 12 here */
  87     marker1 ();  /* set breakpoint 11 here */
  88     marker2 (43); /* set breakpoint 20 here */
  89     marker3 ("stack", "trace"); /* set breakpoint 21 here */
  90     marker4 (177601976L);
  91     /* We're used by a test that requires malloc, so make sure it is
  92        in the executable.  */
  93     (void)malloc (1);
  94
  95     argc = (argc == 12345); /* This is silly, but we can step off of it */ /* set breakpoint 2 here */
  96     return argc;  /* set breakpoint 10 here */
  97 } /* set breakpoint 10a here */
  98
  99 #ifdef PROTOTYPES
 100 int factorial (int value)
 101 #else
 102 int factorial (value)
 103 int value;
 104 #endif
 105 {
 106   if (value > 1) {  /* set breakpoint 7 here */
 107         value *= factorial (value - 1);
 108     }
 109     return (value); /* set breakpoint 19 here */
 110 }
 111
 112 #ifdef PROTOTYPES
 113 int multi_line_if_conditional (int a, int b, int c)
 114 #else
 115 int multi_line_if_conditional (a, b, c)
 116   int a, b, c;
 117 #endif
 118 {
 119   if (a    /* set breakpoint 3 here */
 120       && b
 121       && c)
 122     return 0;
 123   else
 124     return 1;
 125 }
 126
 127 #ifdef PROTOTYPES
 128 int multi_line_while_conditional (int a, int b, int c)
 129 #else
 130 int multi_line_while_conditional (a, b, c)
 131   int a, b, c;
 132 #endif
 133 {
 134   while (a /* set breakpoint 4 here */
 135       && b
 136       && c)
 137     {
 138       a--, b--, c--;
 139     }
 140   return 0;
 141 }