From: Erik van der Kouwe <erik@minix3.org>
Date: Fri, 20 Aug 2010 19:50:36 +0000 (+0000)
Subject: Minor malloc-debug fixes
X-Git-Tag: v3.1.8~60
X-Git-Url: http://zhaoyanbai.com/repos/man.genrandom.html?a=commitdiff_plain;h=292f98dc292a6210cd3d06ef5e246f5abd904ffc;p=minix.git

Minor malloc-debug fixes
---

diff --git a/lib/libc/ansi/malloc-debug.c b/lib/libc/ansi/malloc-debug.c
index ae0420d9b..7b5ffe61e 100644
--- a/lib/libc/ansi/malloc-debug.c
+++ b/lib/libc/ansi/malloc-debug.c
@@ -126,7 +126,7 @@ static struct block *block_alloc(size_t size)
 	read_tsc_64(&tsc);
 	totalsize = block_get_totalsize(size);
 	page_index_max = (ptr_max - ptr_min - totalsize) / PAGE_SIZE;
-	page_index = rem64u(tsc, page_index_max);
+	page_index = (page_index_max > 0) ? (tsc.lo % page_index_max) : 0;
 	ptr = ptr_min + page_index * PAGE_SIZE;
 	
 	/* allocate block */
@@ -143,7 +143,7 @@ static struct block *block_alloc(size_t size)
 	}
 
 	/* block may not be at the requested location if that is in use */
-	if (ptr_min < (u8_t *) block)
+	if (ptr_min > (u8_t *) block)
 		ptr_min = (u8_t *) block;
 
 	if (ptr_max < (u8_t *) block)