Re: Stack corruption in dsound.c

[wylda at volny.cz]

Thanks Henri... I think i got "heap headache" :-/

* Can i make assumption, that log produced by wine is not buffered anywhere
and is written to console sequentially and immediately when that event
happened? (in other words log output doesn't outrun each other lines)

* Is HEAP_ValidateInUseArena called automatically when HeapAlloc() or
HeapFree() is called? Or where it comes from in the log?

* If i have a log:

0018:Call ntdll.RtlAllocateHeap(04df4000,00000000,00002813) ret=78134d83
0022:trace:heap:RtlFreeHeap (0x110000,70000062,0x1f8aa0): returning TRUE
0022:Ret  ntdll.RtlFreeHeap() retval=00000001 ret=7e1de8e8
0022:Call user32.WindowFromDC(0000053c) ret=7e101ee7
0009:err:heap:HEAP_ValidateInUseArena Heap 0x110000: block 0x190f3468
tail overwritten at 0x190f346d (byte 0/19 == 0x8b)
0018:trace:heap:RtlAllocateHeap (0x4df4000,70000062,00002813): returning
0x4e53a08
0018:Ret  ntdll.RtlAllocateHeap() retval=04e53a08 ret=78134d83
0009:trace:heap:RtlAllocateHeap (0x110000,70000062,00000100): returning
0x191d9648
0018:Call ntdll.RtlAllocateHeap(04df4000,00000000,00001013) ret=78134d83
0022:err:heap:HEAP_ValidateInUseArena Heap 0x110000: block 0x190f3468
tail overwritten at 0x190f346d (byte 0/19 == 0x8b)
0022:trace:heap:RtlAllocateHeap (0x110000,7000006a,00000040): returning
0x191d9758

I see corruption "0009:err:heap:HEAP_ValidateInUseArena..." which is
caused by just calling the WindowFromDC()?? Otherwise two line above
the WindowFromDC() would "0022:trace:heap:RtlFreeHeap" complained about
corruption, because that FreeHeap has same heap handle (0x110000) like
complaining HEAP_ValidateInUseArena.