1# Copyright 2015-2023 Free Software Foundation, Inc. 2 3# This program is free software; you can redistribute it and/or modify 4# it under the terms of the GNU General Public License as published by 5# the Free Software Foundation; either version 3 of the License, or 6# (at your option) any later version. 7# 8# This program is distributed in the hope that it will be useful, 9# but WITHOUT ANY WARRANTY; without even the implied warranty of 10# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11# GNU General Public License for more details. 12# 13# You should have received a copy of the GNU General Public License 14# along with this program. If not, see <http://www.gnu.org/licenses/>. 15load_lib dwarf.exp 16 17# Test GDB does not internal error on DWARF register number -1 which is invalid 18# in DWARF. clang-3.5.0-9.fc22.x86_64 produced it inside DW_AT_location. 19 20# This test can only be run on targets which support DWARF-2 and use gas. 21if {![dwarf2_support]} { 22 return 0 23} 24 25standard_testfile main.c .S 26 27# Make some DWARF for the test. 28set asm_file [standard_output_file $srcfile2] 29Dwarf::assemble $asm_file { 30 cu {} { 31 compile_unit { 32 {MACRO_AT_range {main}} 33 } { 34 declare_labels integer_label 35 36 integer_label: DW_TAG_base_type { 37 {DW_AT_byte_size 4 DW_FORM_sdata} 38 {DW_AT_encoding @DW_ATE_signed} 39 {DW_AT_name integer} 40 } 41 42 DW_TAG_subprogram { 43 {DW_AT_external 1 flag} 44 {MACRO_AT_func {main}} 45 } { 46 DW_TAG_variable { 47 {DW_AT_name bregx} 48 {DW_AT_type :$integer_label} 49 {DW_AT_external 1 flag} 50 {DW_AT_location { 51 DW_OP_bregx 0xffffffff 0 52 } SPECIAL_expr} 53 } 54 } 55 } 56 } 57} 58 59if { [prepare_for_testing "failed to prepare" ${testfile} \ 60 [list $srcfile $asm_file] {nodebug}] } { 61 return -1 62} 63 64runto_main 65 66# Variable 'bregx' needs to be inside main as for global symbols GDB does not 67# support non-trivial DW_AT_location. Former GDB printed internal error here. 68gdb_test "p bregx" 69