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# Copyright 2014-2020 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# Test corrupt DWARF input
# PR gdb/15827
load_lib dwarf.exp
if {![dwarf2_support]} {
return 0
}
standard_testfile main.c .S
# Make the DWARF used for the test.
#
# Here we put DW_AT_sibling DIEs into the output which
# point off into la-la land. The whole purpose is to simulate
# corrupt DWARF information and make sure that GDB can handle it
# without crashing.
set asm_file [standard_output_file $srcfile2]
Dwarf::assemble $asm_file {
cu {} {
compile_unit {} {
declare_labels int_label
int_label: base_type {
{byte_size 4 sdata}
{name "int"}
}
enumeration_type {
{name "ENUM"}
{byte_size 4 sdata}
} {
enumerator {
{name "A"}
{const_value 0 sdata}
}
enumerator {
{name "B"}
{const_value 1 sdata}
{sibling 12345678 DW_FORM_ref4}
} {
base_type {
{byte_size 1 sdata}
{name "char"}
}
}
array_type {
{type :$int_label}
{sibling 12345678 DW_FORM_ref4}
}
}
}
}
}
if {[prepare_for_testing "failed to prepare" $testfile \
[list $srcfile $asm_file] {nodebug}]} {
return -1
}
gdb_test "print 1" "= 1" "recover from corrupt DWARF"
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