From ac8875173ad63c030e003363706d49a87aa85745 Mon Sep 17 00:00:00 2001 From: Paul Eggert Date: Fri, 1 Jan 2021 08:45:41 -0800 Subject: [PATCH] New file scratch_buffer_dupfree.c * lib/malloc/scratch_buffer_dupfree.c: New file, from Gnulib (originally from glibc 2.33 code). This is needed on macOS and some other platforms; I forgot to commit it in the most recent Gnulib update. --- lib/malloc/scratch_buffer_dupfree.c | 41 +++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 lib/malloc/scratch_buffer_dupfree.c diff --git a/lib/malloc/scratch_buffer_dupfree.c b/lib/malloc/scratch_buffer_dupfree.c new file mode 100644 index 00000000000..775bff5609f --- /dev/null +++ b/lib/malloc/scratch_buffer_dupfree.c @@ -0,0 +1,41 @@ +/* Variable-sized buffer with on-stack default allocation. + Copyright (C) 2020-2021 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 General Public + License as published by the Free Software Foundation; either + version 3 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 + General Public License for more details. + + You should have received a copy of the GNU General Public + License along with the GNU C Library; if not, see + . */ + +#ifndef _LIBC +# include +#endif + +#include +#include + +void * +__libc_scratch_buffer_dupfree (struct scratch_buffer *buffer, size_t size) +{ + void *data = buffer->data; + if (data == buffer->__space.__c) + { + void *copy = malloc (size); + return copy != NULL ? memcpy (copy, data, size) : NULL; + } + else + { + void *copy = realloc (data, size); + return copy != NULL ? copy : data; + } +} +libc_hidden_def (__libc_scratch_buffer_dupfree) -- 2.39.5