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8a80c7f9d7
Without _GNU_SOURCE defined this file fails to compile with the
following error:
$ gcc manual/examples/strdupa.c
manual/examples/strdupa.c: In function ‘main’:
manual/examples/strdupa.c:27:19: error: implicit declaration of function ‘strdupa’; did you mean ‘strdup’? [-Wimplicit-function-declaration]
27 | char *wr_path = strdupa (path);
| ^~~~~~~
| strdup
manual/examples/strdupa.c:27:19: error: initialization of ‘char *’ from ‘int’ makes pointer from integer without a cast [-Wint-conversion]
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
38 lines
1.0 KiB
C
38 lines
1.0 KiB
C
/* strdupa example.
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Copyright (C) 1991-2025 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but 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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You should have received a copy of the GNU General Public License
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along with this program; if not, see <https://www.gnu.org/licenses/>.
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*/
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#define _GNU_SOURCE 1
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#include <paths.h>
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#include <string.h>
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#include <stdio.h>
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const char path[] = _PATH_STDPATH;
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int
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main (void)
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{
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char *wr_path = strdupa (path);
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char *cp = strtok (wr_path, ":");
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while (cp != NULL)
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{
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puts (cp);
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cp = strtok (NULL, ":");
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}
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return 0;
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}
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