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
19load_lib dwarf.exp
20
21require dwarf2_support
22
23standard_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
32set asm_file [standard_output_file $srcfile2]
33Dwarf::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
70if {[prepare_for_testing "failed to prepare" $testfile \
71           [list $srcfile $asm_file] {nodebug}]} {
72    return -1
73}
74
75gdb_test "print 1" "= 1" "recover from corrupt DWARF"
76