gdb/testsuite/gdb.dwarf2/corrupt.exp

   1 # Copyright 2014-2024 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 # Test corrupt DWARF input
  17 # PR gdb/15827
  18
  19 load_lib dwarf.exp
  20
  21 require dwarf2_support
  22
  23 standard_testfile main.c .S
  24
  25 # Make the DWARF used for the test.
  26 #
  27 # Here we put DW_AT_sibling DIEs into the output which
  28 # point off into la-la land.  The whole purpose is to simulate
  29 # corrupt DWARF information and make sure that GDB can handle it
  30 # without crashing.
  31
  32 set asm_file [standard_output_file $srcfile2]
  33 Dwarf::assemble $asm_file {
  34     cu {} {
  35         compile_unit {} {
  36             declare_labels int_label
  37
  38             int_label: base_type {
  39                 {byte_size 4 sdata}
  40                 {name "int"}
  41             }
  42
  43             enumeration_type {
  44                 {name "ENUM"}
  45                 {byte_size 4 sdata}
  46             } {
  47                 enumerator {
  48                     {name "A"}
  49                     {const_value 0 sdata}
  50                 }
  51                 enumerator {
  52                     {name "B"}
  53                     {const_value 1 sdata}
  54                     {sibling 12345678 DW_FORM_ref4}
  55                 } {
  56                     base_type {
  57                         {byte_size 1 sdata}
  58                         {name "char"}
  59                     }
  60                 }
  61                 array_type {
  62                     {type :$int_label}
  63                     {sibling 12345678 DW_FORM_ref4}
  64                 }
  65             }
  66         }
  67     }
  68 }
  69
  70 if {[prepare_for_testing "failed to prepare" $testfile \
  71          [list $srcfile $asm_file] {nodebug}]} {
  72     return -1
  73 }
  74
  75 gdb_test "print 1" "= 1" "recover from corrupt DWARF"