From 59e2897cf65cb4e7ae4d81fe8b410efb8821fbdb Mon Sep 17 00:00:00 2001
From: leitner <leitner>
Date: Mon, 17 Apr 2006 06:04:17 +0000
Subject: [PATCH] add comments to possibly non-obvious code

---
 mult/range_arrayinbuf.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mult/range_arrayinbuf.c b/mult/range_arrayinbuf.c
index 2cf879b..b31c2c5 100644
--- a/mult/range_arrayinbuf.c
+++ b/mult/range_arrayinbuf.c
@@ -12,8 +12,8 @@ int range_arrayinbuf(const void* buf1,size_t len,
     alen=x;
   } else {
     unsigned long long t=(unsigned long long)elements*membersize;
-    alen=t;
-    if (alen!=t) return 0;
+    alen=t;			/* this strips the upper 32 bits of t */
+    if (alen!=t) return 0;	/* if that changes something, we overflowed */
   }
   return range_bufinbuf(buf1,len,arraystart,alen);
 }