| # Copyright 2015-2024 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/>. |
| load_lib dwarf.exp |
| |
| # Test GDB does not internal error on DWARF register number -1 which is invalid |
| # in DWARF. clang-3.5.0-9.fc22.x86_64 produced it inside DW_AT_location. |
| |
| # This test can only be run on targets which support DWARF-2 and use gas. |
| require dwarf2_support |
| |
| standard_testfile main.c .S |
| |
| # Make some DWARF for the test. |
| set asm_file [standard_output_file $srcfile2] |
| Dwarf::assemble $asm_file { |
| cu {} { |
| compile_unit { |
| {MACRO_AT_range {main}} |
| } { |
| declare_labels integer_label |
| |
| integer_label: DW_TAG_base_type { |
| {DW_AT_byte_size 4 DW_FORM_sdata} |
| {DW_AT_encoding @DW_ATE_signed} |
| {DW_AT_name integer} |
| } |
| |
| DW_TAG_subprogram { |
| {DW_AT_external 1 flag} |
| {MACRO_AT_func {main}} |
| } { |
| DW_TAG_variable { |
| {DW_AT_name bregx} |
| {DW_AT_type :$integer_label} |
| {DW_AT_external 1 flag} |
| {DW_AT_location { |
| DW_OP_bregx 0xffffffff 0 |
| } SPECIAL_expr} |
| } |
| } |
| } |
| } |
| } |
| |
| if { [prepare_for_testing "failed to prepare" ${testfile} \ |
| [list $srcfile $asm_file] {nodebug}] } { |
| return -1 |
| } |
| |
| runto_main |
| |
| # Variable 'bregx' needs to be inside main as for global symbols GDB does not |
| # support non-trivial DW_AT_location. Former GDB printed internal error here. |
| gdb_test "p bregx" |