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42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
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/* Variable-sized buffer with on-stack default allocation.
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Copyright (C) 2020-2021 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _LIBC
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# include <libc-config.h>
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#endif
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#include <scratch_buffer.h>
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#include <string.h>
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void *
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__libc_scratch_buffer_dupfree (struct scratch_buffer *buffer, size_t size)
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{
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void *data = buffer->data;
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if (data == buffer->__space.__c)
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{
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void *copy = malloc (size);
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return copy != NULL ? memcpy (copy, data, size) : NULL;
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}
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else
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{
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void *copy = realloc (data, size);
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return copy != NULL ? copy : data;
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}
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}
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libc_hidden_def (__libc_scratch_buffer_dupfree)
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