gdb/testsuite/gdb.dwarf2/dw2-unresolved-main.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2009-2019 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 <stdlib.h>
  19
  20 #define CONCAT1(a, b) CONCAT2(a, b)
  21 #define CONCAT2(a, b) a ## b
  22
  23 #ifdef SYMBOL_PREFIX
  24 # define SYMBOL1(str)     CONCAT1(SYMBOL_PREFIX, str)
  25 #else
  26 # define SYMBOL1(str)     str
  27 #endif
  28
  29 #define STR1(s) #s
  30 #define STR(s) STR1(s)
  31
  32 #define SYMBOL(str)     STR(SYMBOL1(str))
  33
  34 asm (".globl cu_text_start");
  35 asm ("cu_text_start:");
  36
  37 int
  38 main (void)
  39 {
  40   unsigned char var = 1;
  41
  42   if (var != 1)
  43     abort ();
  44   {
  45     extern unsigned char var;
  46
  47     /* Do not rely on the `extern' DIE output by GCC (GCC PR debug/39563).  */
  48 asm (".globl " SYMBOL(extern_block_start));
  49 asm (SYMBOL(extern_block_start) ":");
  50     if (var != 2)
  51       abort ();
  52 asm (".globl " SYMBOL(extern_block_end));
  53 asm (SYMBOL(extern_block_end) ":");
  54   }
  55
  56   return 0;
  57 }
  58
  59 asm (".globl cu_text_end");
  60 asm ("cu_text_end:");