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42a4f53d | 1 | # Copyright 2016-2019 Free Software Foundation, Inc. |
e5ca03b4 PA |
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 | ||
19 | load_lib dwarf.exp | |
20 | ||
21 | # This test can only be run on targets which support DWARF-2 and use gas. | |
22 | if {![dwarf2_support]} { | |
23 | return 0 | |
24 | } | |
25 | ||
26 | standard_testfile main.c .S | |
27 | set executable ${testfile} | |
28 | ||
29 | # Make some DWARF for the test. | |
30 | set asm_file [standard_output_file $srcfile2] | |
31 | Dwarf::assemble $asm_file { | |
32 | global srcdir subdir srcfile | |
33 | ||
34 | cu { version 3 addr_size 4 } { | |
35 | compile_unit {} { | |
36 | declare_labels struct_label var_label int_label | |
37 | ||
38 | int_label: base_type { | |
39 | {byte_size 4 sdata} | |
40 | {encoding @DW_ATE_signed} | |
41 | {name int} | |
42 | } | |
43 | ||
44 | struct_label: structure_type { | |
45 | {name S} | |
b7f38fda | 46 | {byte_size 8 DW_FORM_sdata} |
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47 | } { |
48 | member { | |
49 | {name bitfield} | |
50 | {type :$int_label} | |
51 | {bit_size 12 DW_FORM_sdata} | |
52 | {bit_offset 20 DW_FORM_sdata} | |
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53 | } |
54 | member { | |
55 | {name intfield} | |
56 | {type :$int_label} | |
b7f38fda | 57 | {data_member_location 4 DW_FORM_sdata} |
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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 | ||
5b362f04 | 76 | if [prepare_for_testing "failed to prepare" $executable "${asm_file} ${srcfile}" {}] { |
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77 | return -1 |
78 | } | |
79 | ||
80 | if ![runto_main] { | |
81 | return -1 | |
82 | } | |
83 | ||
84 | gdb_test "p var" " = <optimized out>" | |
85 | gdb_test "p var.bitfield" " = <optimized out>" | |
86 | gdb_test "p var.intfield" " = <optimized out>" |