http://bugs.winehq.org/show_bug.cgi?id=16666
--- Comment #9 from Austin English austinenglish@gmail.com 2009-04-11 12:13:00 --- Here's the diff from 4.4 to 4.5. I'm going to test soon to see if that's the cause.
http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/stdlib/malloc.c.diff?r1=1...