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07ed32f9 | 1 | /* Test size of the static TLS surplus reservation for backwards compatibility. |
581c785b | 2 | Copyright (C) 2020-2022 Free Software Foundation, Inc. |
07ed32f9 FW |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
17 | <https://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #include <stdio.h> | |
20 | #include <support/check.h> | |
21 | #include <support/xdlfcn.h> | |
22 | ||
23 | static int do_test (void); | |
24 | #include <support/test-driver.c> | |
25 | ||
26 | /* This hack results in a definition of struct rtld_global_ro. Do | |
27 | this after all the other header inclusions, to minimize the | |
28 | impact. */ | |
29 | #define SHARED | |
30 | #include <ldsodefs.h> | |
31 | ||
32 | static | |
33 | int do_test (void) | |
34 | { | |
35 | /* Avoid introducing a copy relocation due to the hidden alias in | |
36 | ld.so. */ | |
37 | struct rtld_global_ro *glro = xdlsym (NULL, "_rtld_global_ro"); | |
38 | printf ("info: _dl_tls_static_surplus: %zu\n", glro->_dl_tls_static_surplus); | |
39 | /* Hisoric value: 16 * 100 + 64. */ | |
40 | TEST_VERIFY (glro->_dl_tls_static_surplus >= 1664); | |
41 | return 0; | |
42 | } |