1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
# Copyright 2023-2024 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 use of DW_OP_GNU_uninit with DW_OP_piece. For this case, GDB
# should not print:
#
# DWARF-2 expression error: DW_OP_GNU_uninit must always be the very last op.
load_lib dwarf.exp
require dwarf2_support
standard_testfile main.c -dw.S
set asm_file [standard_output_file $srcfile2]
set c64 6639779683436459270
set c32 1779823878
Dwarf::assemble $asm_file {
cu {} {
compile_unit {} {
declare_labels i64_type i32_type
i64_type: base_type {
{name "int64_t"}
{encoding @DW_ATE_signed}
{byte_size 8 DW_FORM_sdata}
}
i32_type: base_type {
{name "int32_t"}
{encoding @DW_ATE_signed}
{byte_size 4 DW_FORM_sdata}
}
DW_TAG_variable {
{name i64_var}
{type :$i64_type}
{location {
DW_OP_constu $::c64
DW_OP_stack_value
DW_OP_GNU_uninit
DW_OP_piece 8
} SPECIAL_expr}
}
DW_TAG_variable {
{name i32_var}
{type :$i32_type}
{location {
DW_OP_constu $::c32
DW_OP_stack_value
DW_OP_GNU_uninit
DW_OP_piece 4
} SPECIAL_expr}
}
}
}
}
if {[build_executable ${testfile}.exp ${testfile} \
[list $srcfile $asm_file] {nodebug}]} {
return -1
}
clean_restart ${testfile}
if {![runto_main]} {
return -1
}
set cmd "print i64_var"
if { [is_64_target] } {
gdb_test $cmd \
" = +\\\[uninitialized\\\] $c64"
} else {
unsupported $cmd
}
gdb_test "print i32_var" \
" = +\\\[uninitialized\\\] $c32"
|
