glibc/nptl/tst-tls4modb.c

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/* Copyright (C) 2003-2016 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
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
<http://www.gnu.org/licenses/>. */
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <tls.h>
static int i;
int bar;
static __thread void *foo [32 / sizeof (void *)]
__attribute__ ((tls_model ("initial-exec"), aligned (sizeof (void *))))
= { &i, &bar };
void
test1 (void)
{
size_t s;
if (foo [0] != &i || foo [1] != &bar)
abort ();
foo [0] = NULL;
foo [1] = NULL;
for (s = 0; s < sizeof (foo) / sizeof (void *); ++s)
{
if (foo [s])
abort ();
foo [s] = &foo[s];
}
}
void
test2 (void)
{
size_t s;
for (s = 0; s < sizeof (foo) / sizeof (void *); ++s)
{
if (foo [s] != &foo [s])
abort ();
foo [s] = &foo [s ^ 1];
}
}