blob: 3ee1e335bb8d11a052c2a1d08e72a916e7141945 [file] [log] [blame]
# Copyright 2018-2020 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
# 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 <>.
# This tests some non-standard DWARF that we still expect GDB to be
# able to handle.
# The DWARF standard (v5 5.1) says this:
# A base type is represented by a debugging information entry with
# the tag DW_TAG_base_type.
# A base type entry may have a DW_AT_name attribute whose value is
# a null-terminated string containing the name of the base type as
# recognized by the programming language of the compilation unit
# containing the base type entry.
# So the DW_AT_name field for a DW_TAG_base_type is optional. This
# test provides some basic checking that GDB doesn't crash when
# presented with this situation.
load_lib dwarf.exp
# This test can only be run on targets which support DWARF-2 and use gas.
if {![dwarf2_support]} {
return 0
standard_testfile void-type.c void-type.S
# Make some DWARF for the test.
set asm_file [standard_output_file $srcfile2]
Dwarf::assemble $asm_file {
global srcdir subdir srcfile
set func_result [function_range func ${srcdir}/${subdir}/${srcfile}]
set func_start [lindex $func_result 0]
set func_length [lindex $func_result 1]
set main_result [function_range main ${srcdir}/${subdir}/${srcfile}]
set main_start [lindex $main_result 0]
set main_length [lindex $main_result 1]
cu {} {
DW_TAG_compile_unit {
{DW_AT_producer "GNU C 8.1"}
{DW_AT_language @DW_LANG_C}
{DW_AT_name void-type.c}
{DW_AT_comp_dir /tmp}
} {
declare_labels main_type int_type ptr_type
main_type: DW_TAG_base_type {
{DW_AT_byte_size 4 DW_FORM_sdata}
{DW_AT_encoding @DW_ATE_signed}
int_type: DW_TAG_base_type {
{DW_AT_byte_size 0 DW_FORM_sdata}
{DW_AT_encoding @DW_ATE_signed}
ptr_type: DW_TAG_pointer_type {
{DW_AT_type :$int_type}
DW_TAG_subprogram {
{name func}
{low_pc $func_start addr}
{high_pc "$func_start + $func_length" addr}
{type :$int_type}
DW_TAG_subprogram {
{name main}
{low_pc $main_start addr}
{high_pc "$main_start + $main_length" addr}
{type :$main_type}
DW_TAG_variable {
{DW_AT_name "var_a"}
{DW_AT_type :$main_type}
{DW_AT_external 1 DW_FORM_flag}
{DW_AT_location {DW_OP_addr [gdb_target_symbol "var_a"]} SPECIAL_expr}
DW_TAG_variable {
{DW_AT_name "var_ptr"}
{DW_AT_type :$ptr_type}
{DW_AT_external 1 DW_FORM_flag}
{DW_AT_location {DW_OP_addr [gdb_target_symbol "var_ptr"]} SPECIAL_expr}
if { [prepare_for_testing "failed to prepare" ${testfile} \
[list $srcfile $asm_file] {nodebug}] } {
return -1
if ![runto_main] {
return -1
# Use 'ptype' on two variables that are using DW_TAG_base_type types
# with missing DW_AT_name attributes.
gdb_test "ptype var_ptr" "type = <invalid type code $decimal> \\*" \
"ptype of a pointer to a basic type with missing name"
gdb_test "ptype var_a" "type = <invalid type code $decimal>" \
"ptype of a variable that is a basic type with a missing name"