From 78037a7ccb14725f5a2f72f6cec4e084a05fad0e Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <icculus@icculus.org>
Date: Sat, 28 Feb 2009 01:34:02 -0500
Subject: [PATCH] Valgrind fix: avoid overlapping memcpy() in sorting routines
 (thanks, JLM!).

---
 physfs.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/physfs.c b/physfs.c
index 36edf8f..8b47a36 100644
--- a/physfs.c
+++ b/physfs.c
@@ -245,7 +245,8 @@ static void __PHYSFS_quick_sort(void *a, PHYSFS_uint32 lo, PHYSFS_uint32 hi,
                 break;
             swapfn(a, i, j);
         } /* while */
-        swapfn(a, i, hi-1);
+        if (i != (hi-1))
+            swapfn(a, i, hi-1);
         __PHYSFS_quick_sort(a, lo, j, cmpfn, swapfn);
         __PHYSFS_quick_sort(a, i+1, hi, cmpfn, swapfn);
     } /* else */