blob: 12a60a01edd5bed9db5e91100c4ad243ae430536 (
plain)
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
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
# Copyright 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/>.
# Check for an issue in GDB where buildsym_compunit::record_line was
# removing duplicate line table entries, but skip_prologue_using_sal
# depends on these duplicates to spot the end of the prologue.
#
# When the de-duplication was added this regression was not spotted as
# it requires a particular combination of a (very) small function
# being inlined into an also very small outer function.
#
# This test recreates the exact combination of line table entries that
# were seen in the original test using the Dejagnu DWARF compiler.
load_lib dwarf.exp
# This test can only be run on targets which support DWARF-2 and use gas.
if {![dwarf2_support]} {
return 0
}
# The .c files use __attribute__.
if [get_compiler_info] {
return -1
}
if !$gcc_compiled {
return 0
}
standard_testfile dw2-inline-small-func-lbls.c dw2-inline-small-func.S \
dw2-inline-small-func.c dw2-inline-small-func.h
set asm_file [standard_output_file $srcfile2]
Dwarf::assemble $asm_file {
global srcdir subdir srcfile srcfile3 srcfile4
declare_labels lines_label callee_subprog_label
get_func_info main {debug optimize=-O1}
cu {} {
# It is important that the producer here be 'clang' as, at the
# time of writing this, GCC for x86-64 doesn't make use of
# skip_prologue_using_sal, while clang does.
compile_unit {
{producer "clang xxxx" }
{language @DW_LANG_C}
{name ${srcfile3}}
{low_pc 0 addr}
{stmt_list ${lines_label} DW_FORM_sec_offset}
} {
callee_subprog_label: subprogram {
{external 1 flag}
{name callee}
{inline 3 data1}
}
subprogram {
{external 1 flag}
{name main}
{low_pc $main_start addr}
{high_pc "$main_start + $main_len" addr}
} {
inlined_subroutine {
{abstract_origin %$callee_subprog_label}
{low_pc line_label_1 addr}
{high_pc line_label_2 addr}
{call_file 1 data1}
{call_line 21 data1}
}
}
}
}
lines {version 2 default_is_stmt 1} lines_label {
include_dir "${srcdir}/${subdir}"
file_name "$srcfile3" 1
file_name "$srcfile4" 1
set f1_l1 [gdb_get_line_number "caller: before call" $srcfile3]
set f1_l2 [gdb_get_line_number "caller: the call" $srcfile3]
set f1_l3 [gdb_get_line_number "caller: after call" $srcfile3]
set f2_l1 [gdb_get_line_number "callee: body" $srcfile4]
program {
{DW_LNE_set_address line_label_1}
{line $f1_l1}
{DW_LNS_copy}
{line ${f1_l2}}
{DW_LNS_copy}
{DW_LNS_set_file 2}
{line ${f2_l1}}
{DW_LNS_copy}
{DW_LNS_negate_stmt}
{DW_LNS_copy}
{DW_LNS_set_file 1}
{DW_LNE_set_address line_label_2}
{line ${f1_l3}}
{DW_LNS_copy}
{DW_LNE_set_address line_label_3}
{DW_LNS_copy}
{DW_LNE_end_sequence}
}
}
}
if { [prepare_for_testing "failed to prepare" ${testfile} \
[list $srcfile $asm_file] {nodebug optimize=-O1}] } {
return -1
}
if ![runto_main] {
return -1
}
# Delete all breakpoints so that the output of "info breakpoints"
# below will only contain a single breakpoint.
delete_breakpoints
# Place a breakpoint within the function in the header file.
set linenum [gdb_get_line_number "callee: body" $srcfile4]
gdb_breakpoint "${srcfile4}:${linenum}"
# Check that the breakpoint was placed where we expected. It should
# appear at the requested line. When the bug in GDB was present the
# breakpoint would be placed on one of the following lines instead.
gdb_test "info breakpoints" \
".* in callee at \[^\r\n\]+${srcfile4}:${linenum}\\y.*"
|