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# Copyright 2016-2020 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/>.
# Test printing a bitfield of an optimized-out variable. Regression
# test for PR gdb/20295.
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 main.c .S
set executable ${testfile}
# Make some DWARF for the test.
set asm_file [standard_output_file $srcfile2]
Dwarf::assemble $asm_file {
global srcdir subdir srcfile
cu { version 3 addr_size 4 } {
compile_unit {} {
declare_labels struct_label var_label int_label
int_label: base_type {
{byte_size 4 sdata}
{encoding @DW_ATE_signed}
{name int}
}
struct_label: structure_type {
{name S}
{byte_size 8 DW_FORM_sdata}
} {
member {
{name bitfield}
{type :$int_label}
{bit_size 12 DW_FORM_sdata}
{bit_offset 20 DW_FORM_sdata}
}
member {
{name intfield}
{type :$int_label}
{data_member_location 4 DW_FORM_sdata}
}
}
subprogram {
{MACRO_AT_func { main ${srcdir}/${subdir}/${srcfile} }}
{type :$int_label}
{external 1 flag}
} {
var_label: DW_TAG_variable {
{name var}
{location {} DW_FORM_block1}
{type :$struct_label}
}
}
}
}
}
if [prepare_for_testing "failed to prepare" $executable "${asm_file} ${srcfile}" {}] {
return -1
}
if ![runto_main] {
return -1
}
gdb_test "p var" " = <optimized out>"
gdb_test "p var.bitfield" " = <optimized out>"
gdb_test "p var.intfield" " = <optimized out>"
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