2020-07-20 11:30:45 +00:00
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/* Test size of the static TLS surplus reservation for backwards compatibility.
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2023-01-06 21:08:04 +00:00
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Copyright (C) 2020-2023 Free Software Foundation, Inc.
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2020-07-20 11:30:45 +00:00
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <stdio.h>
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#include <support/check.h>
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#include <support/xdlfcn.h>
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static int do_test (void);
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#include <support/test-driver.c>
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/* This hack results in a definition of struct rtld_global_ro. Do
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this after all the other header inclusions, to minimize the
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impact. */
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#define SHARED
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#include <ldsodefs.h>
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static
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int do_test (void)
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{
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/* Avoid introducing a copy relocation due to the hidden alias in
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ld.so. */
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struct rtld_global_ro *glro = xdlsym (NULL, "_rtld_global_ro");
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printf ("info: _dl_tls_static_surplus: %zu\n", glro->_dl_tls_static_surplus);
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/* Hisoric value: 16 * 100 + 64. */
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TEST_VERIFY (glro->_dl_tls_static_surplus >= 1664);
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return 0;
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}
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