From: Kenneth Fyfe <kenfyfe@conkersoft.co.uk>
Date: Sat, 14 Jan 2006 23:51:59 +0000 (+0000)
Subject: com32's realloc function
X-Git-Tag: syslinux-3.20-pre5^0
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a16afeb49ad4daa97f895a98ac42d551785fff54;p=platform%2Fupstream%2Fsyslinux.git

com32's realloc function

Hello list,

I've been playing with com32 programs lately and I've come across a
a problem with the realloc function in libcom32.  The code that rounds
up the size looks to be missing a '~' operator, resulting in it
truncating every request to a size of 0-15 bytes.

The little patch below fixes it up to match the corresponding line in
malloc, which makes it work for me.

K.
---

diff --git a/com32/lib/realloc.c b/com32/lib/realloc.c
index 577c200..67a2783 100644
--- a/com32/lib/realloc.c
+++ b/com32/lib/realloc.c
@@ -24,7 +24,7 @@ void *realloc(void *ptr, size_t size)
   }
 
   /* Add the obligatory arena header, and round up */
-  size = (size+2*sizeof(struct arena_header)-1) & ARENA_SIZE_MASK;
+  size = (size+2*sizeof(struct arena_header)-1) & ~ARENA_SIZE_MASK;
 
   ah = (struct free_arena_header *)
     ((struct arena_header *)ptr - 1);