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

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2008-2016 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 /*
  27  *      This simple classical example of recursion is useful for
  28  *      testing stack backtraces and such.
  29  */
  30
  31 int factorial(int);
  32
  33 int
  34 main (int argc, char **argv, char **envp)
  35 {
  36     if (argc == 12345) {  /* an unlikely value < 2^16, in case uninited */ /* set breakpoint 6 here */
  37         fprintf (stderr, "usage:  factorial <number>\n");
  38         return 1;
  39     }
  40     printf ("%d\n", factorial (atoi ("6")));  /* set breakpoint 1 here */
  41     /* set breakpoint 12 here */
  42     marker1 ();  /* set breakpoint 11 here */
  43     marker2 (43); /* set breakpoint 20 here */
  44     marker3 ("stack", "trace"); /* set breakpoint 21 here */
  45     marker4 (177601976L);
  46     /* We're used by a test that requires malloc, so make sure it is
  47        in the executable.  */
  48     (void)malloc (1);
  49
  50     argc = (argc == 12345); /* This is silly, but we can step off of it */ /* set breakpoint 2 here */
  51     return argc;  /* set breakpoint 10 here */
  52 } /* set breakpoint 10a here */
  53
  54 int factorial (int value)
  55 {
  56   if (value > 1) {  /* set breakpoint 7 here */
  57         value *= factorial (value - 1);
  58     }
  59     return (value); /* set breakpoint 19 here */
  60 }
  61
  62 int multi_line_if_conditional (int a, int b, int c)
  63 {
  64   if (a    /* set breakpoint 3 here */
  65       && b
  66       && c)
  67     return 0;
  68   else
  69     return 1;
  70 }
  71
  72 int multi_line_while_conditional (int a, int b, int c)
  73 {
  74   while (a /* set breakpoint 4 here */
  75       && b
  76       && c)
  77     {
  78       a--, b--, c--;
  79     }
  80   return 0;
  81 }