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487b39df ILT |
1 | /* initpri3.c -- test ctor odering when using init_array. |
2 | ||
b3adc24a | 3 | Copyright (C) 2011-2020 Free Software Foundation, Inc. |
487b39df ILT |
4 | Written by Ian Lance Taylor <iant@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 tests that the linker correctly orders .ctor entries when | |
24 | putting them into .init_array, as is the default. */ | |
25 | ||
26 | #include <assert.h> | |
27 | ||
28 | int i = 1; | |
29 | ||
30 | static void | |
31 | ctor1 (void) | |
32 | { | |
33 | assert (i == 1); | |
34 | i = 2; | |
35 | } | |
36 | ||
37 | static void | |
38 | ctor2 (void) | |
39 | { | |
40 | assert (i == 2); | |
41 | i = 3; | |
42 | } | |
43 | ||
44 | static void | |
45 | dtor1 (void) | |
46 | { | |
47 | assert (i == 3); | |
48 | i = 2; | |
49 | } | |
50 | ||
51 | static void | |
52 | dtor2 (void) | |
53 | { | |
54 | assert (i == 2); | |
55 | i = 1; | |
56 | } | |
57 | ||
58 | /* The .ctors section is run in reverse order, the .dtors section in | |
59 | run in forward order. We give these arrays the "aligned" attribute | |
60 | because the x86_64 ABI would otherwise give them a 16-byte | |
61 | alignment, which may leave a hole in the section. */ | |
62 | ||
63 | void (*ctors[]) (void) | |
64 | __attribute__ ((aligned (4), section (".ctors"))) = { | |
65 | ctor2, | |
66 | ctor1 | |
67 | }; | |
68 | ||
69 | void (*dtors[]) (void) | |
70 | __attribute__ ((aligned (4), section (".dtors"))) = { | |
71 | dtor1, | |
72 | dtor2 | |
73 | }; | |
74 | ||
75 | int | |
76 | main (void) | |
77 | { | |
78 | assert (i == 3); | |
79 | return 0; | |
80 | } |