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cea6ffbd CC |
1 | #!/bin/sh |
2 | ||
3 | # weak_as_needed.sh -- a test case for version handling with weak symbols | |
4 | # and --as-needed libraries. | |
5 | ||
82704155 | 6 | # Copyright (C) 2018-2019 Free Software Foundation, Inc. |
cea6ffbd CC |
7 | # Written by Cary Coutant <ccoutant@gmail.com>. |
8 | ||
9 | # This file is part of gold. | |
10 | ||
11 | # This program is free software; you can redistribute it and/or modify | |
12 | # it under the terms of the GNU General Public License as published by | |
13 | # the Free Software Foundation; either version 3 of the License, or | |
14 | # (at your option) any later version. | |
15 | ||
16 | # This program is distributed in the hope that it will be useful, | |
17 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | # GNU General Public License for more details. | |
20 | ||
21 | # You should have received a copy of the GNU General Public License | |
22 | # along with this program; if not, write to the Free Software | |
23 | # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
24 | # MA 02110-1301, USA. | |
25 | ||
26 | # This test verifies that a weak reference is properly bound to | |
27 | # an as-needed library, when it is first resolved to a symbol in | |
28 | # a library that ends up being not needed. | |
29 | ||
30 | # Ref: https://stackoverflow.com/questions/50751421/undefined-behavior-in-shared-lib-using-libpthread-but-not-having-it-in-elf-as-d | |
31 | ||
32 | check() | |
33 | { | |
34 | if ! grep -q "$2" "$1" | |
35 | then | |
36 | echo "Did not find expected output in $1:" | |
37 | echo " $2" | |
38 | echo "" | |
39 | echo "Actual output below:" | |
40 | cat "$1" | |
41 | exit 1 | |
42 | fi | |
43 | } | |
44 | ||
45 | check_missing() | |
46 | { | |
47 | if grep -q "$2" "$1" | |
48 | then | |
49 | echo "Found unexpected output in $1:" | |
50 | echo " $2" | |
51 | echo "" | |
52 | echo "Actual output below:" | |
53 | cat "$1" | |
54 | exit 1 | |
55 | fi | |
56 | } | |
57 | ||
58 | check weak_as_needed.stdout "WEAK .* UND *bar@v2" | |
59 | check weak_as_needed.stdout "NEEDED.*weak_as_needed_c\.so" | |
60 | check_missing weak_as_needed.stdout "NEEDED.*weak_as_needed_b\.so" | |
61 | ||
62 | exit 0 |