xref: /netbsd-src/external/gpl3/gdb.old/dist/gdb/testsuite/gdb.dwarf2/bitfield-parent-optimized-out.exp (revision a04395531661c5e8d314125d5ae77d4cbedd5d73) 
1# Copyright 2016-2019 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/>.
15
16# Test printing a bitfield of an optimized-out variable.  Regression
17# test for PR gdb/20295.
18
19load_lib dwarf.exp
20
21# This test can only be run on targets which support DWARF-2 and use gas.
22if {![dwarf2_support]} {
23    return 0
24}
25
26standard_testfile main.c .S
27set executable ${testfile}
28
29# Make some DWARF for the test.
30set asm_file [standard_output_file $srcfile2]
31Dwarf::assemble $asm_file {
32    global srcdir subdir srcfile
33
34    cu { version 3 addr_size 4 } {
35	compile_unit {} {
36	    declare_labels struct_label var_label int_label
37
38	    int_label: base_type {
39		{byte_size 4 sdata}
40		{encoding @DW_ATE_signed}
41		{name int}
42	    }
43
44	    struct_label: structure_type {
45		{name S}
46		{byte_size 8 DW_FORM_sdata}
47	    } {
48		member {
49		    {name bitfield}
50		    {type :$int_label}
51		    {bit_size 12 DW_FORM_sdata}
52		    {bit_offset 20 DW_FORM_sdata}
53		}
54		member {
55		    {name intfield}
56		    {type :$int_label}
57		    {data_member_location 4 DW_FORM_sdata}
58		}
59	    }
60
61	    subprogram {
62		{MACRO_AT_func { main ${srcdir}/${subdir}/${srcfile} }}
63		{type :$int_label}
64		{external 1 flag}
65	    } {
66		var_label: DW_TAG_variable {
67		    {name var}
68		    {location {} DW_FORM_block1}
69		    {type :$struct_label}
70		}
71	    }
72	}
73    }
74}
75
76if [prepare_for_testing "failed to prepare" $executable "${asm_file} ${srcfile}" {}] {
77    return -1
78}
79
80if ![runto_main] {
81    return -1
82}
83
84gdb_test "p var" " = <optimized out>"
85gdb_test "p var.bitfield" " = <optimized out>"
86gdb_test "p var.intfield" " = <optimized out>"
87