074fa78f5e
These inexplicably avoid segfaults with gcc-12.2.0. * lib/tests/posix/50-open-read.c (main)[__GNUC__ > 11]: Use malloc instead of local allocated string. * lib/tests/scaffold/7i-struct-struct.c (main)[__GNUC__ > 11]: Initialize all fields of struct. * lib/tests/scaffold/t.c (main): Likewise.
63 lines
1.7 KiB
C
63 lines
1.7 KiB
C
/* -*-comment-start: "//";comment-end:""-*-
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* GNU Mes --- Maxwell Equations of Software
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* Copyright © 2019, 2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
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*
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* This file is part of GNU Mes.
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*
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* GNU Mes is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or (at
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* your option) any later version.
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*
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* GNU Mes is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <mes/lib.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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int
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main (int argc, char const *argv[])
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{
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eputs ("test:getenv\n");
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#if __GNUC__ > 11
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char* file_name = malloc (PATH_MAX);
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#else
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// FIXME: gcc-12.2.0 fails open using this
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char file_name[PATH_MAX];
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#endif
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char *srcdir = getenv ("abs_top_srcdir");
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if (! srcdir) // for running by hand
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srcdir = ".";
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eputs ("srcdir=");
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eputs (srcdir);
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eputs ("\n");
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strcpy (file_name, srcdir);
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strcpy (file_name + strlen (srcdir), "/lib/tests/posix/data/open-read");
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eputs ("test open:");
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eputs (file_name);
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eputs ("\n");
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int filedes = open (file_name, O_RDONLY, 0);
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if (filedes <= 2)
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return 1;
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char buf[20];
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int n = read (filedes, buf, sizeof (buf));
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if (n != 5)
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return 2;
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if (strcmp (buf, "hello"))
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return 3;
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eputs ("test read: ");
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eputs (buf);
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eputs ("\n");
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return 0;
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}
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