SPDX-FileCopyrightText: 2021 Paul Dersey <pdersey@gmail.com>

SPDX-License-Identifier: LGPL-2.0-or-later

Reimplement qswap in a more correct manner that works much more cleanly and
with larger string sizes.

--- lib/stdlib/qsort.c
+++ lib/stdlib/qsort.c
@@ -24,10 +25,14 @@
 void
 qswap (void *a, void *b, size_t size)
 {
-  char *buf[8];
-  memcpy (buf, a, size);
-  memcpy (a, b, size);
-  memcpy (b, buf, size);
+  char *pa = a;
+  char *pb = b;
+  do
+  {
+    char tmp = *pa;
+    *pa++ = *pb;
+    *pb++ = tmp;
+  } while (--size > 0);
 }
 
 size_t