From: Sandro Santilli <strk@keybit.net>
Date: Sun, 20 Nov 2011 21:19:12 +0000 (+0000)
Subject: Do not memcpy to self in ptarray_reverse (see #1302)
X-Git-Tag: 2.0.0alpha1~667
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=70e7934d65f66dcd19167379abb85536d98d9ae8;p=postgis

Do not memcpy to self in ptarray_reverse (see #1302)

git-svn-id: http://svn.osgeo.org/postgis/trunk@8193 b70326c6-7e19-0410-871a-916f4a2858ee
---

diff --git a/liblwgeom/ptarray.c b/liblwgeom/ptarray.c
index e58b9fe98..059d95092 100644
--- a/liblwgeom/ptarray.c
+++ b/liblwgeom/ptarray.c
@@ -281,14 +281,14 @@ void ptarray_free(POINTARRAY *pa)
 void
 ptarray_reverse(POINTARRAY *pa)
 {
-	/* TODO change this to double array operations once point array is double alligned */
+	/* TODO change this to double array operations once point array is double aligned */
 	POINT4D pbuf;
 	uint32_t i;
 	int ptsize = ptarray_point_size(pa);
 	int last = pa->npoints-1;
-	int mid = last/2;
+	int mid = pa->npoints/2;
 
-	for (i=0; i<=mid; i++)
+	for (i=0; i<mid; i++)
 	{
 		uint8_t *from, *to;
 		from = getPoint_internal(pa, i);