live-bootstrap/sysa/tcc-0.9.27/patches-mes-libc/qsort.patch

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2021-02-08 06:23:31 +00:00
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.
2021-01-29 16:43:10 +00:00
--- 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