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/* Test with interposed malloc with dynamic TLS.
Copyright (C) 2024-2025 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 <array_length.h>
#include <stdio.h>
#include <support/check.h>
#include <support/xdlfcn.h>
/* Defined in tst-recursive-tlsmallocmod.so. */
extern __thread unsigned int malloc_subsytem_counter;
static int
do_test (void)
{
/* 16 is large enough to exercise the DTV resizing case. */
void *handles[16];
for (unsigned int i = 0; i < array_length (handles); ++i)
{
/* Re-use the TLS slot for module 0. */
if (i > 0)
xdlclose (handles[0]);
char soname[30];
snprintf (soname, sizeof (soname), "tst-recursive-tlsmod%u.so", i);
handles[i] = xdlopen (soname, RTLD_NOW);
if (i > 0)
{
handles[0] = xdlopen ("tst-recursive-tlsmod0.so", RTLD_NOW);
int (*fptr) (void) = xdlsym (handles[0], "get_threadvar_0");
/* May trigger TLS storage allocation using malloc. */
TEST_COMPARE (fptr (), 0);
}
}
for (unsigned int i = 0; i < array_length (handles); ++i)
xdlclose (handles[i]);
printf ("info: malloc subsystem calls: %u\n", malloc_subsytem_counter);
TEST_VERIFY (malloc_subsytem_counter > 0);
return 0;
}
#include <support/test-driver.c>
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