mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2025-01-06 12:09:26 +08:00
6ad036d703
A newer version of GCC will now emit member locations using just
DW_AT_data_bit_offset, like:
<3><14fe>: Abbrev Number: 1 (DW_TAG_member)
<14ff> DW_AT_name : (indirect string, offset: 0x215e): nb_bytes
<1503> DW_AT_decl_file : 1
<1503> DW_AT_decl_line : 10
<1504> DW_AT_decl_column : 7
<1505> DW_AT_type : <0x150b>
<1509> DW_AT_bit_size : 31
<150a> DW_AT_data_bit_offset: 64
whereas earlier versions would emit something like:
<3><164f>: Abbrev Number: 7 (DW_TAG_member)
<1650> DW_AT_name : (indirect string, offset: 0x218d): nb_bytes
<1654> DW_AT_decl_file : 1
<1655> DW_AT_decl_line : 10
<1656> DW_AT_decl_column : 7
<1657> DW_AT_type : <0x165f>
<165b> DW_AT_byte_size : 4
<165c> DW_AT_bit_size : 31
<165d> DW_AT_bit_offset : 1
<165e> DW_AT_data_member_location: 8
That is, DW_AT_data_member_location is not emitted any more. This is
a change due to the switch to DWARF 5 by default.
This change pointed out an existing bug in gdb, namely that the
attr_to_dynamic_prop depends on the presence of
DW_AT_data_member_location. This patch moves the handling of
DW_AT_data_bit_offset into handle_data_member_location, and updates
attr_to_dynamic_prop to handle this new case.
A new test case is included. This test fails with GCC 11, but passes
with an earlier version of GCC.
48 lines
1.5 KiB
Plaintext
48 lines
1.5 KiB
Plaintext
# Copyright 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/>.
|
|
|
|
load_lib "ada.exp"
|
|
|
|
if { [skip_ada_tests] } { return -1 }
|
|
|
|
standard_ada_testfile pr
|
|
|
|
foreach_with_prefix scenario {all minimal} {
|
|
set flags [list debug additional_flags=-fgnat-encodings=$scenario]
|
|
|
|
if {[gdb_compile_ada "${srcfile}" "${binfile}" executable $flags] != ""} {
|
|
return -1
|
|
}
|
|
|
|
clean_restart ${testfile}
|
|
|
|
set bp_location [gdb_get_line_number "STOP" ${testdir}/pr.adb]
|
|
runto "pr.adb:$bp_location"
|
|
|
|
set test "print var"
|
|
gdb_test_multiple $test $test {
|
|
-re " = \\(length => 11, length_t => 23, bytes => 13, msg => hello, val => \"abcdefghijk\"\\)\[\r\n\]+$gdb_prompt $" {
|
|
pass $test
|
|
}
|
|
-re " = .*more than max-value-size.*\[\r\n\]+$gdb_prompt $" {
|
|
# GNAT >= 12.0 has the needed fix here.
|
|
if {$scenario == "minimal" && ![test_compiler_info {gcc-1[2-9]-*}]} {
|
|
setup_kfail "minimal encodings" *-*-*
|
|
}
|
|
fail $test
|
|
}
|
|
}
|
|
}
|