[v7,2/3] support: Add xreallocarray
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Commit Message
As a wrapper over reallocarray.
---
support/Makefile | 1 +
support/support.h | 2 ++
support/xreallocarray.c | 29 +++++++++++++++++++++++++++++
3 files changed, 32 insertions(+)
create mode 100644 support/xreallocarray.c
@@ -194,6 +194,7 @@ libsupport-routines = \
xraise \
xreadlink \
xrealloc \
+ xreallocarray \
xrecvfrom \
xsendto \
xsetlocale \
@@ -107,6 +107,8 @@ extern void *xcalloc (size_t n, size_t s)
__returns_nonnull;
extern void *xrealloc (void *o, size_t n)
__attribute_malloc__ __attribute_alloc_size__ ((2)) __attr_dealloc_free;
+extern void *xreallocarray (void *p, size_t n, size_t s)
+ __attribute_alloc_size__ ((2, 3)) __attr_dealloc_free;
extern char *xstrdup (const char *) __attribute_malloc__ __attr_dealloc_free
__returns_nonnull;
void *xposix_memalign (size_t alignment, size_t n)
new file mode 100644
@@ -0,0 +1,29 @@
+/* Error-checking wrapper for reallocarray
+ Copyright (C) 2016-2023 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 Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <stdlib.h>
+#include <support/support.h>
+
+void *
+xreallocarray (void *p, size_t n, size_t s)
+{
+ void *r = reallocarray (p, n, s);
+ if (r == NULL && (p == NULL || (n != 0 && s != 0)))
+ oom_error ("reallocarray", n);
+ return r;
+}