glibc/elf/tst-noload.c
Paul Eggert 581c785bf3 Update copyright dates with scripts/update-copyrights
I used these shell commands:

../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")

and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 7061 files FOO.

I then removed trailing white space from math/tgmath.h,
support/tst-support-open-dev-null-range.c, and
sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following
obscure pre-commit check failure diagnostics from Savannah.  I don't
know why I run into these diagnostics whereas others evidently do not.

remote: *** 912-#endif
remote: *** 913:
remote: *** 914-
remote: *** error: lines with trailing whitespace found
...
remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
2022-01-01 11:40:24 -08:00

73 lines
2.0 KiB
C

/* Verify that RTLD_NOLOAD works as expected.
Copyright (C) 2016-2022 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 <dlfcn.h>
#include <stdio.h>
#include <gnu/lib-names.h>
static int
do_test (void)
{
/* Test that no object is loaded with RTLD_NOLOAD. */
void *h1 = dlopen (LIBM_SO, RTLD_LAZY | RTLD_NOLOAD);
if (h1 != NULL)
{
printf ("h1: DSO has been loaded while it should have not\n");
return 1;
}
/* This used to segfault in some glibc versions. */
void *h2 = dlopen (LIBM_SO, RTLD_LAZY | RTLD_NOLOAD | RTLD_NODELETE);
if (h2 != NULL)
{
printf ("h2: DSO has been loaded while it should have not\n");
return 1;
}
/* Test that loading an already loaded object returns the same. */
void *h3 = dlopen (LIBM_SO, RTLD_LAZY);
if (h3 == NULL)
{
printf ("h3: failed to open DSO: %s\n", dlerror ());
return 1;
}
void *h4 = dlopen (LIBM_SO, RTLD_LAZY | RTLD_NOLOAD);
if (h4 == NULL)
{
printf ("h4: failed to open DSO: %s\n", dlerror ());
return 1;
}
if (h4 != h3)
{
printf ("h4: should return the same object\n");
return 1;
}
/* Cleanup */
if (dlclose (h3) != 0)
{
printf ("h3: dlclose failed: %s\n", dlerror ());
return 1;
}
return 0;
}
#include <support/test-driver.c>