gdb/testsuite/gdb.reverse/map-to-same-line.c

   1 /* Copyright 2023-2024 Free Software Foundation, Inc.
   2
   3    This program is free software; you can redistribute it and/or modify
   4    it under the terms of the GNU General Public License as published by
   5    the Free Software Foundation; either version 3 of the License, or
   6    (at your option) any later version.
   7
   8    This program is distributed in the hope that it will be useful,
   9    but WITHOUT ANY WARRANTY; without even the implied warranty of
  10    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11    GNU General Public License for more details.
  12
  13    You should have received a copy of the GNU General Public License
  14    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  15
  16 /* The purpose of this test is to create a DWARF line table that contains two
  17    or more entries for the same line.  When stepping (forwards or backwards),
  18    GDB should step over the entire line and not just a particular entry in
  19    the line table.  */
  20
  21 int
  22 main (void)
  23 {     /* TAG: main prologue */
  24   asm ("main_label: .globl main_label");
  25   int i = 1, j = 2, k;
  26   float f1 = 2.0, f2 = 4.1, f3;
  27   const char *str_1 = "foo", *str_2 = "bar", *str_3;
  28
  29   asm ("line1: .globl line1");
  30   k = i; f3 = f1; str_3 = str_1;    /* TAG: line 1 */
  31
  32   asm ("line2: .globl line2");
  33   k = j; f3 = f2; str_3 = str_2;    /* TAG: line 2 */
  34
  35   asm ("line3: .globl line3");
  36   k = i; f3 = f1; str_3 = str_1;    /* TAG: line 3 */
  37
  38   asm ("line4: .globl line4");
  39   k = j; f3 = f2; str_3 = str_2;    /* TAG: line 4 */
  40
  41   asm ("line5: .globl line5");
  42   k = i; f3 = f1; str_3 = str_1;    /* TAG: line 5 */
  43
  44   asm ("line6: .globl line6");
  45   k = j; f3 = f2; str_3 = str_2;    /* TAG: line 6 */
  46
  47   asm ("line7: .globl line7");
  48   k = i; f3 = f1; str_3 = str_1;    /* TAG: line 7 */
  49
  50   asm ("line8: .globl line8");
  51   k = j; f3 = f2; str_3 = str_2;    /* TAG: line 8 */
  52
  53   asm ("main_return: .globl main_return");
  54   k = j; f3 = f2; str_3 = str_2;    /* TAG: main return */
  55
  56   return 0; /* TAG: main return */
  57 }