glibc/dlfcn/tst-dladdr.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

75 lines
2.1 KiB
C

/* Test for dladdr.
Copyright (C) 2000-2022 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 <errno.h>
#include <error.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define TEST_FUNCTION do_test ()
extern int do_test (void);
int
do_test (void)
{
void *handle;
int (*sym) (void); /* We load ref1 from glreflib1.c. */
Dl_info info;
int ret;
handle = dlopen ("glreflib1.so", RTLD_NOW);
if (handle == NULL)
error (EXIT_FAILURE, 0, "cannot load: glreflib1.so");
sym = dlsym (handle, "ref1");
if (sym == NULL)
error (EXIT_FAILURE, 0, "dlsym failed");
memset (&info, 0, sizeof (info));
ret = dladdr (sym, &info);
if (ret == 0)
error (EXIT_FAILURE, 0, "dladdr failed");
printf ("ret = %d\n", ret);
printf ("info.dli_fname = %p (\"%s\")\n", info.dli_fname, info.dli_fname);
printf ("info.dli_fbase = %p\n", info.dli_fbase);
printf ("info.dli_sname = %p (\"%s\")\n", info.dli_sname, info.dli_sname);
printf ("info.dli_saddr = %p\n", info.dli_saddr);
if (info.dli_fname == NULL)
error (EXIT_FAILURE, 0, "dli_fname is NULL");
if (info.dli_fbase == NULL)
error (EXIT_FAILURE, 0, "dli_fbase is NULL");
if (info.dli_sname == NULL)
error (EXIT_FAILURE, 0, "dli_sname is NULL");
if (info.dli_saddr == NULL)
error (EXIT_FAILURE, 0, "dli_saddr is NULL");
dlclose (handle);
return 0;
}
#include "../test-skeleton.c"