gdb/testsuite/gdb.base/break.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 1992-2021 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 extern int marker1 (void);
  22 extern int marker2 (int a);
  23 extern void marker3 (char *a, char *b);
  24 extern void marker4 (long d);
  25
  26 /* We're used by a test that requires malloc, so make sure it is in
  27    the executable.  */
  28 void *need_malloc ()
  29 {
  30   return malloc (1);
  31 }
  32
  33 /*
  34  *      This simple classical example of recursion is useful for
  35  *      testing stack backtraces and such.
  36  */
  37
  38 int factorial(int);
  39
  40 int
  41 main (int argc, char **argv, char **envp)
  42 {
  43     if (argc == 12345) {  /* an unlikely value < 2^16, in case uninited */ /* set breakpoint 6 here */
  44         fprintf (stderr, "usage:  factorial <number>\n");
  45         return 1;
  46     }
  47     printf ("%d\n", factorial (atoi ("6")));  /* set breakpoint 1 here */
  48     /* set breakpoint 12 here */
  49     marker1 ();  /* set breakpoint 11 here */
  50     marker2 (43); /* set breakpoint 20 here */
  51     marker3 ("stack", "trace"); /* set breakpoint 21 here */
  52     marker4 (177601976L);
  53     /* We're used by a test that requires malloc, so make sure it is
  54        in the executable.  */
  55     (void)malloc (1);
  56
  57     argc = (argc == 12345); /* This is silly, but we can step off of it */ /* set breakpoint 2 here */
  58     return argc;  /* set breakpoint 10 here */
  59 } /* set breakpoint 10a here */
  60
  61 int factorial (int value)
  62 {
  63   if (value > 1) {  /* set breakpoint 7 here */
  64         value *= factorial (value - 1);
  65     }
  66     return (value); /* set breakpoint 19 here */
  67 }
  68
  69 int multi_line_if_conditional (int a, int b, int c)
  70 {
  71   if (a    /* set breakpoint 3 here */
  72       && b
  73       && c)
  74     return 0;
  75   else
  76     return 1;
  77 }
  78
  79 int multi_line_while_conditional (int a, int b, int c)
  80 {
  81   while (a /* set breakpoint 4 here */
  82       && b
  83       && c)
  84     {
  85       a--, b--, c--;
  86     }
  87   return 0;
  88 }