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
|
# Copyright 2006-2025 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/>.
# This test creates a shared library and a main program which uses
# that library, extracts the debug info of the library to a separate
# file, and then tests that a symbol from the shared library is
# accessible using both absolute and relative settings of
# LD_LIBRARY_PATH.
# This test needs to change the environment in which the test program
# is run, specifically the setting of LD_LIBRARY_PATH. GDB can adjust
# this setting for both native and extended-remote targets, but not
# for targets to which GDB connects after the program has already
# started. Therefore, this test won't work for targets which use
# "target remote".
require !use_gdb_stub
require {have_compile_flag -std=c11}
set testfile tls-sepdebug
set srcmainfile ${testfile}-main.c
set srcsharedfile ${testfile}-shared.c
set binmainfile [standard_output_file ${testfile}-main]
set binsharedbase ${testfile}-shared.so
set binsharedfile [standard_output_file ${binsharedbase}]
# Build the shared library, but use explicit -soname; otherwise the
# full path to the library would get encoded into ${binmainfile}
# making LD_LIBRARY_PATH tests useless.
#
# The compile flag -std=c11 is required because the test case uses
# 'thread_local' to indicate thread local storage. This is available
# as a macro starting in C11 and became a C-language keyword in C23.
if { [build_executable "build library" ${binsharedfile} ${srcsharedfile} \
{debug shlib additional_flags=-std=c11}] == -1 } {
untested "Couldn't compile test library"
return -1
}
# Strip debug information from $binsharedfile, placing it in
# ${binsharedfile}.debug. Also add a .gnu_debuglink in the former,
# pointing to the latter.
gdb_gnu_strip_debug ${binsharedfile}
# Build main program, but do not use `shlib=' since that would
# automatically add -rpath for gcc.
if { [gdb_compile_pthreads \
"${srcdir}/${subdir}/${srcmainfile} ${binsharedfile}" \
"${binmainfile}" executable [list debug additional_flags=-std=c11]] \
!= "" } {
untested "Couldn't compile test program"
return -1
}
set absdir [file dirname [standard_output_file ${binsharedbase}]]
if { [info exists ::env(LD_LIBRARY_PATH)] } {
set ld_library_path $::env(LD_LIBRARY_PATH)
} else {
set ld_library_path ""
}
foreach library_path [list $absdir [relative_filename [pwd] $absdir]] \
name { absolute relative } {
with_test_prefix $name {
# Restart, but defer loading until after setting LD_LIBRARY_PATH.
clean_restart
gdb_test_no_output \
"set env LD_LIBRARY_PATH=$ld_library_path:$library_path" \
"set env LD_LIBRARY_PATH"
gdb_load ${binmainfile}
if ![runto_main] {
return
}
# Print a thread local variable from the shared library to be certain
# that its symbols were loaded from the separate debuginfo file.
gdb_test "print var" \
"\\\$1 = 42" \
"print TLS variable from a shared library with separate debug info file"
}
}
|
