Mercurial > gnulib
view tests/test-getlogin_r.c @ 40212:8da9577294da
unistr/*, uniconv/*: Fix undefined behaviour.
Reported by Jeffrey Walton <noloader@gmail.com>.
* lib/unistr/u-cpy.h (FUNC): Don't invoke memcpy with a zero size.
* lib/unistr/u-cpy-alloc.h (FUNC): Likewise.
* lib/uniconv/u8-conv-from-enc.c (u8_conv_from_encoding): Likewise.
* lib/uniconv/u8-conv-to-enc.c (u8_conv_to_encoding): Likewise.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sat, 09 Mar 2019 00:01:47 +0100 |
parents | b06060465f09 |
children |
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/* Test of getting user name. Copyright (C) 2010-2019 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>. */ /* Written by Bruno Haible and Paul Eggert. */ #include <config.h> #include <unistd.h> #include "signature.h" SIGNATURE_CHECK (getlogin_r, int, (char *, size_t)); #include "test-getlogin.h" int main (void) { /* Test value. */ /* Test with a large enough buffer. */ char buf[1024]; int err = getlogin_r (buf, sizeof buf); test_getlogin_result (buf, err); /* Test with a small buffer. */ { char smallbuf[1024]; size_t n = strlen (buf); size_t i; for (i = 0; i <= n; i++) { err = getlogin_r (smallbuf, i); if (i == 0) ASSERT (err == ERANGE || err == EINVAL); else ASSERT (err == ERANGE); } } /* Test with a huge buffer. */ { static char hugebuf[70000]; ASSERT (getlogin_r (hugebuf, sizeof (hugebuf)) == 0); ASSERT (strcmp (hugebuf, buf) == 0); } return 0; }