gdb/testsuite/gdb.python/py-value.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2008-2020 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 #include <string.h>
  21
  22 struct s
  23 {
  24   int a;
  25   int b;
  26 };
  27
  28 union u
  29 {
  30   int a;
  31   float b;
  32 };
  33
  34 enum e
  35   {
  36     ONE = 1,
  37     TWO = 2
  38   };
  39
  40 typedef struct s *PTR;
  41
  42 enum e evalue = TWO;
  43
  44 struct str
  45 {
  46   int length;
  47   /* Variable length.  */
  48   char text[1];
  49 };
  50
  51 #ifdef __cplusplus
  52
  53 struct Base {
  54   virtual int x() { return 5; }
  55 };
  56
  57 struct Derived : public Base {
  58 };
  59
  60 Base *base = new Derived ();
  61 Derived derived;
  62 Base &base_ref = derived;
  63
  64 void ptr_ref(int*& rptr_int)
  65 {
  66   return; /* break to inspect pointer by reference. */
  67 }
  68 #endif
  69
  70 void func1 ()
  71 {
  72   printf ("void function called\n");
  73 }
  74
  75 int func2 (int arg1, int arg2)
  76 {
  77   return arg1 + arg2;
  78 }
  79
  80 char **save_argv;
  81
  82 int
  83 main (int argc, char *argv[])
  84 {
  85   char *cp;
  86   struct s s;
  87   union u u;
  88   PTR x = &s;
  89   char st[17] = "divide et impera";
  90   char nullst[17] = "divide\0et\0impera";
  91   void (*fp1) (void)  = &func1;
  92   int  (*fp2) (int, int) = &func2;
  93   const char *embed = "embedded x\201\202\203\204";
  94   int a[3] = {1,2,3};
  95   int *p = a;
  96   int i = 2;
  97   int *ptr_i = &i;
  98   struct str *xstr;
  99
 100   /* Prevent gcc from optimizing argv[] out.  */
 101
 102   /* We also check for a NULL argv in case we are dealing with a target
 103      executing in a freestanding environment, therefore there are no
 104      guarantees about argc or argv.  */
 105   if (argv != NULL)
 106     cp = argv[0];
 107
 108   s.a = 3;
 109   s.b = 5;
 110   u.a = 7;
 111   (*fp1) ();
 112   (*fp2) (10,20);
 113
 114 #ifdef __cplusplus
 115   ptr_ref(ptr_i);
 116 #endif
 117
 118 #define STR_LENGTH 100
 119   xstr = (struct str *) malloc (sizeof (*xstr) + STR_LENGTH);
 120   xstr->length = STR_LENGTH;
 121   memset (xstr->text, 'x', STR_LENGTH);
 122 #undef STR_LENGTH
 123
 124   save_argv = argv;      /* break to inspect struct and union */
 125   return 0;
 126 }