gdb/testsuite/gdb.base/inline-frame-cycle-unwind.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 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 static void inline_func (void);
  19 static void normal_func (void);
  20
  21 volatile int global_var;
  22 volatile int level_counter;
  23
  24 static void __attribute__((noinline))
  25 normal_func (void)
  26 {
  27   /* Do some work.  */
  28   ++global_var;
  29
  30   /* Now the inline function.  */
  31   --level_counter;
  32   inline_func ();
  33   ++level_counter;
  34
  35   /* Do some work.  */
  36   ++global_var;
  37 }
  38
  39 static inline void __attribute__((__always_inline__))
  40 inline_func (void)
  41 {
  42   if (level_counter > 1)
  43     {
  44       --level_counter;
  45       normal_func ();
  46       ++level_counter;
  47     }
  48   else
  49     ++global_var;       /* Break here.  */
  50 }
  51
  52 int
  53 main ()
  54 {
  55   level_counter = 6;
  56   normal_func ();
  57   return 0;
  58 }