| # Copyright 2020-2021 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/>. |
| |
| # Some compilers give anonymous structures a linkage name, and that |
| # linkage name doesn't demangle (within GDB calling gdb_demangle |
| # return NULL). At one point this caused GDB to crash due to |
| # dereferencing a NULL pointer. |
| |
| 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 .c -debug.S |
| |
| # Set up the DWARF for the test. |
| set asm_file [standard_output_file $srcfile2] |
| Dwarf::assemble $asm_file { |
| global srcfile |
| |
| cu {} { |
| DW_TAG_compile_unit { |
| {DW_AT_language @DW_LANG_C_plus_plus} |
| {DW_AT_name $srcfile} |
| {DW_AT_comp_dir /tmp} |
| |
| } { |
| declare_labels a_l b_l |
| |
| a_l: DW_TAG_base_type { |
| {DW_AT_byte_size 4 DW_FORM_sdata} |
| {DW_AT_encoding @DW_ATE_signed} |
| {DW_AT_name int} |
| } |
| |
| # To expose the bug that existed at one point this |
| # structure must have a linkage name, but no name, and the |
| # linkage name is something that doesn't demangle. |
| b_l: DW_TAG_structure_type { |
| {DW_AT_byte_size 8 DW_FORM_sdata} |
| {DW_AT_encoding @DW_ATE_signed} |
| {DW_AT_linkage_name <anon>} |
| } { |
| member { |
| {name x} |
| {type :$a_l} |
| {data_member_location 0 data1} |
| } |
| member { |
| {name y} |
| {type :$a_l} |
| {data_member_location 0 data1} |
| } |
| } |
| DW_TAG_subprogram { |
| {MACRO_AT_func {main}} |
| {type :$a_l} |
| } |
| DW_TAG_variable { |
| {type :$b_l} |
| {external 1 flag} |
| {DW_AT_name global_var} |
| {DW_AT_location { |
| DW_OP_addr [gdb_target_symbol global_var] |
| } SPECIAL_expr} |
| } |
| } |
| } |
| } |
| |
| if { [prepare_for_testing "failed to prepare" ${testfile} \ |
| [list $srcfile $asm_file] {nodebug}] } { |
| return -1 |
| } |
| |
| gdb_assert [runto_main] "run to main" |
| gdb_test "p global_var" " = {x = 0, y = 0}" |