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