gdb/testsuite/gdb.base/break.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 1992, 1993, 1994, 1995, 1999, 2002, 2003, 2007, 2008, 2009, 2010,
   4    2011 Free Software Foundation, Inc.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  18
  19 #ifdef vxworks
  20
  21 #  include <stdio.h>
  22
  23 /* VxWorks does not supply atoi.  */
  24 static int
  25 atoi (z)
  26      char *z;
  27 {
  28   int i = 0;
  29
  30   while (*z >= '0' && *z <= '9')
  31     i = i * 10 + (*z++ - '0');
  32   return i;
  33 }
  34
  35 /* I don't know of any way to pass an array to VxWorks.  This function
  36    can be called directly from gdb.  */
  37
  38 vxmain (arg)
  39 char *arg;
  40 {
  41   char *argv[2];
  42
  43   argv[0] = "";
  44   argv[1] = arg;
  45   main (2, argv, (char **) 0);
  46 }
  47
  48 #else /* ! vxworks */
  49 #  include <stdio.h>
  50 #  include <stdlib.h>
  51 #endif /* ! vxworks */
  52
  53 #ifdef PROTOTYPES
  54 extern int marker1 (void);
  55 extern int marker2 (int a);
  56 extern void marker3 (char *a, char *b);
  57 extern void marker4 (long d);
  58 #else
  59 extern int marker1 ();
  60 extern int marker2 ();
  61 extern void marker3 ();
  62 extern void marker4 ();
  63 #endif
  64
  65 /* We're used by a test that requires malloc, so make sure it is in
  66    the executable.  */
  67 void *need_malloc ()
  68 {
  69   return malloc (1);
  70 }
  71
  72 /*
  73  *      This simple classical example of recursion is useful for
  74  *      testing stack backtraces and such.
  75  */
  76
  77 #ifdef PROTOTYPES
  78 int factorial(int);
  79
  80 int
  81 main (int argc, char **argv, char **envp)
  82 #else
  83 int
  84 main (argc, argv, envp)
  85 int argc;
  86 char *argv[], **envp;
  87 #endif
  88 {
  89     if (argc == 12345) {  /* an unlikely value < 2^16, in case uninited */ /* set breakpoint 6 here */
  90         fprintf (stderr, "usage:  factorial <number>\n");
  91         return 1;
  92     }
  93     printf ("%d\n", factorial (atoi ("6")));  /* set breakpoint 1 here */
  94     /* set breakpoint 12 here */
  95     marker1 ();  /* set breakpoint 11 here */
  96     marker2 (43); /* set breakpoint 20 here */
  97     marker3 ("stack", "trace"); /* set breakpoint 21 here */
  98     marker4 (177601976L);
  99     /* We're used by a test that requires malloc, so make sure it is
 100        in the executable.  */
 101     (void)malloc (1);
 102
 103     argc = (argc == 12345); /* This is silly, but we can step off of it */ /* set breakpoint 2 here */
 104     return argc;  /* set breakpoint 10 here */
 105 } /* set breakpoint 10a here */
 106
 107 #ifdef PROTOTYPES
 108 int factorial (int value)
 109 #else
 110 int factorial (value)
 111 int value;
 112 #endif
 113 {
 114   if (value > 1) {  /* set breakpoint 7 here */
 115         value *= factorial (value - 1);
 116     }
 117     return (value); /* set breakpoint 19 here */
 118 }
 119
 120 #ifdef PROTOTYPES
 121 int multi_line_if_conditional (int a, int b, int c)
 122 #else
 123 int multi_line_if_conditional (a, b, c)
 124   int a, b, c;
 125 #endif
 126 {
 127   if (a    /* set breakpoint 3 here */
 128       && b
 129       && c)
 130     return 0;
 131   else
 132     return 1;
 133 }
 134
 135 #ifdef PROTOTYPES
 136 int multi_line_while_conditional (int a, int b, int c)
 137 #else
 138 int multi_line_while_conditional (a, b, c)
 139   int a, b, c;
 140 #endif
 141 {
 142   while (a /* set breakpoint 4 here */
 143       && b
 144       && c)
 145     {
 146       a--, b--, c--;
 147     }
 148   return 0;
 149 }