Commit | Line | Data |
---|---|---|
1f25b93b CC |
1 | // weak_undef_test_2.cc -- test handling of weak undefined symbols for gold |
2 | ||
82704155 | 3 | // Copyright (C) 2014-2019 Free Software Foundation, Inc. |
1f25b93b CC |
4 | // Written by Cary Coutant <ccoutant@google.com>. |
5 | ||
6 | // This file is part of gold. | |
7 | ||
8 | // This program is free software; you can redistribute it and/or modify | |
9 | // it under the terms of the GNU General Public License as published by | |
10 | // the Free Software Foundation; either version 3 of the License, or | |
11 | // (at your option) any later version. | |
12 | ||
13 | // This program is distributed in the hope that it will be useful, | |
14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | // GNU General Public License for more details. | |
17 | ||
18 | // You should have received a copy of the GNU General Public License | |
19 | // along with this program; if not, write to the Free Software | |
20 | // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
21 | // MA 02110-1301, USA. | |
22 | ||
23 | // This file tests that we correctly deal with weak undefined symbols | |
24 | // when searching archive libraries. If we have a weak undefined symbol, | |
25 | // it should not cause us to link an archive library member that defines | |
26 | // that symbol. However, if the symbol is also listed in a -u option on | |
27 | // the command line, it should cause the archive member to be linked. | |
28 | ||
29 | ||
30 | #include <cstdio> | |
31 | ||
32 | // This symbol is defined in weak_undef_file3.cc, but we should | |
33 | // not load it from the library. | |
34 | extern int weak_undef_1 __attribute__ ((weak)); | |
35 | ||
36 | // This symbol is defined in weak_undef_file4.cc, but is also | |
37 | // listed in a -u option on the link command, so we should | |
38 | // load it from the library. | |
39 | extern int weak_undef_2 __attribute__ ((weak)); | |
40 | ||
41 | int *p1 = &weak_undef_1; | |
42 | ||
43 | int *p2 = &weak_undef_2; | |
44 | ||
45 | int | |
46 | main() | |
47 | { | |
48 | int status = 0; | |
49 | ||
50 | if (&weak_undef_1 != NULL) | |
51 | { | |
52 | fprintf(stderr, "FAILED weak undef test 1: %s\n", | |
53 | "&weak_undef_1 is not NULL"); | |
54 | status = 1; | |
55 | } | |
56 | ||
57 | if (&weak_undef_2 == NULL) | |
58 | { | |
59 | fprintf(stderr, "FAILED weak undef test 2: %s\n", | |
60 | "&weak_undef_2 is NULL"); | |
61 | status = 1; | |
62 | } | |
63 | ||
64 | if (p1 != NULL) | |
65 | { | |
66 | fprintf(stderr, "FAILED weak undef test 3: %s\n", | |
67 | "p1 is not NULL"); | |
68 | status = 1; | |
69 | } | |
70 | ||
71 | if (p2 == NULL) | |
72 | { | |
73 | fprintf(stderr, "FAILED weak undef test 4: %s\n", | |
74 | "p2 is NULL"); | |
75 | status = 1; | |
76 | } | |
77 | ||
78 | return status; | |
79 | } |