gdb/testsuite/gdb.base/break.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 1992-2014 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 #include <stdio.h>
  19 #include <stdlib.h>
  20
  21 #ifdef PROTOTYPES
  22 extern int marker1 (void);
  23 extern int marker2 (int a);
  24 extern void marker3 (char *a, char *b);
  25 extern void marker4 (long d);
  26 #else
  27 extern int marker1 ();
  28 extern int marker2 ();
  29 extern void marker3 ();
  30 extern void marker4 ();
  31 #endif
  32
  33 /* We're used by a test that requires malloc, so make sure it is in
  34    the executable.  */
  35 void *need_malloc ()
  36 {
  37   return malloc (1);
  38 }
  39
  40 /*
  41  *      This simple classical example of recursion is useful for
  42  *      testing stack backtraces and such.
  43  */
  44
  45 #ifdef PROTOTYPES
  46 int factorial(int);
  47
  48 int
  49 main (int argc, char **argv, char **envp)
  50 #else
  51 int
  52 main (argc, argv, envp)
  53 int argc;
  54 char *argv[], **envp;
  55 #endif
  56 {
  57     if (argc == 12345) {  /* an unlikely value < 2^16, in case uninited */ /* set breakpoint 6 here */
  58         fprintf (stderr, "usage:  factorial <number>\n");
  59         return 1;
  60     }
  61     printf ("%d\n", factorial (atoi ("6")));  /* set breakpoint 1 here */
  62     /* set breakpoint 12 here */
  63     marker1 ();  /* set breakpoint 11 here */
  64     marker2 (43); /* set breakpoint 20 here */
  65     marker3 ("stack", "trace"); /* set breakpoint 21 here */
  66     marker4 (177601976L);
  67     /* We're used by a test that requires malloc, so make sure it is
  68        in the executable.  */
  69     (void)malloc (1);
  70
  71     argc = (argc == 12345); /* This is silly, but we can step off of it */ /* set breakpoint 2 here */
  72     return argc;  /* set breakpoint 10 here */
  73 } /* set breakpoint 10a here */
  74
  75 #ifdef PROTOTYPES
  76 int factorial (int value)
  77 #else
  78 int factorial (value)
  79 int value;
  80 #endif
  81 {
  82   if (value > 1) {  /* set breakpoint 7 here */
  83         value *= factorial (value - 1);
  84     }
  85     return (value); /* set breakpoint 19 here */
  86 }
  87
  88 #ifdef PROTOTYPES
  89 int multi_line_if_conditional (int a, int b, int c)
  90 #else
  91 int multi_line_if_conditional (a, b, c)
  92   int a, b, c;
  93 #endif
  94 {
  95   if (a    /* set breakpoint 3 here */
  96       && b
  97       && c)
  98     return 0;
  99   else
 100     return 1;
 101 }
 102
 103 #ifdef PROTOTYPES
 104 int multi_line_while_conditional (int a, int b, int c)
 105 #else
 106 int multi_line_while_conditional (a, b, c)
 107   int a, b, c;
 108 #endif
 109 {
 110   while (a /* set breakpoint 4 here */
 111       && b
 112       && c)
 113     {
 114       a--, b--, c--;
 115     }
 116   return 0;
 117 }