| # Copyright 2018-2021 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/>. |
| |
| # 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 srcfile |
| |
| cu {} { |
| DW_TAG_compile_unit { |
| {DW_AT_producer "GNU C 8.1"} |
| {DW_AT_language @DW_LANG_C} |
| {DW_AT_name $srcfile} |
| {DW_AT_comp_dir /tmp} |
| } { |
| declare_labels main_type int_type ptr_type |
| |
| main_type: DW_TAG_base_type { |
| {DW_AT_byte_size 4 DW_FORM_sdata} |
| {DW_AT_encoding @DW_ATE_signed} |
| } |
| |
| int_type: DW_TAG_base_type { |
| {DW_AT_byte_size 0 DW_FORM_sdata} |
| {DW_AT_encoding @DW_ATE_signed} |
| } |
| |
| ptr_type: DW_TAG_pointer_type { |
| {DW_AT_type :$int_type} |
| } |
| |
| DW_TAG_subprogram { |
| {MACRO_AT_func func} |
| {type :$int_type} |
| } |
| DW_TAG_subprogram { |
| {MACRO_AT_func main} |
| {type :$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" |