elf/tst-dlmopen-gethostbyname-mod.c


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/* Exercise dlerror_run in elf/dl-libc.c after dlmopen, via NSS.  Helper module.
   Copyright (C) 2021 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 <netdb.h>
#include <nss.h>

void
call_gethostbyname (void)
{
  __nss_configure_lookup ("hosts", "files");
  /* This should not terminate the process due to a missing
     _nss_files_getcanonname_r symbol.  */
  gethostbyname ("localhost");
}