summaryrefslogtreecommitdiff
path: root/libc/stdlib
diff options
context:
space:
mode:
authorWaldemar Brodkorb <wbx@openadk.org>2024-03-12 02:49:05 +0100
committerWaldemar Brodkorb <wbx@openadk.org>2024-03-12 02:49:05 +0100
commitad1a0463067bba232ec8e19f458e1fc7d7c80b55 (patch)
tree6be19fd52a78e2049c0497d3765639228432877e /libc/stdlib
parentcd950aac51cb6cb537f04e0f071b7edb83487de6 (diff)
add reallocarray from musl
Diffstat (limited to 'libc/stdlib')
-rw-r--r--libc/stdlib/malloc-standard/reallocarray.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/libc/stdlib/malloc-standard/reallocarray.c b/libc/stdlib/malloc-standard/reallocarray.c
new file mode 100644
index 000000000..e4044c3f5
--- /dev/null
+++ b/libc/stdlib/malloc-standard/reallocarray.c
@@ -0,0 +1,36 @@
+/*
+Copyright © 2005-2020 Rich Felker, et al.
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#define _BSD_SOURCE
+#include <errno.h>
+#include <stdlib.h>
+
+void *reallocarray(void *ptr, size_t m, size_t n)
+{
+ if (n && m > -1 / n) {
+ errno = ENOMEM;
+ return 0;
+ }
+
+ return realloc(ptr, m * n);
+}