http://bugs.winehq.org/show_bug.cgi?id=29448
--- Comment #6 from Dan Kegel dank@kegel.com 2011-12-29 22:30:14 CST --- warn+heap doesn't visibly change anything, and adds a few of these to the log:
0009:Call KERNEL32.GlobalHandle(001790f0) ret=011423fe 0009:warn:heap:HEAP_ValidateInUseArena Heap 0x110000: invalid in-use arena magic 00555555 for 0x1790e8 0009:Ret KERNEL32.GlobalHandle() retval=00144532 ret=011423fe
but those are benign according to http://bugs.winehq.org/show_bug.cgi?id=10179