Permanent "HEAP: Trying to free an invalid address" + intermittent "Assertion failed: FreeEntry->PreviousSize == CurrentEntry->Size", during "msxml3 : domdoc", on testbots

Running Wine Test, Module: msxml3, Test: domdoc

...  // The assertion is not always logged at the same place during the test.

fixme:(dll/win32/msxml3/domdoc.c:2749) (00255B40)->(0022FB50 {VT_DISPATCH: 00265F64}): semi-stub

fixme:(dll/win32/msxml3/domdoc.c:2749) (00263E78)->(0022FB50 {VT_NULL}): semi-stub

(sdk/lib/rtl/heap.c:2199) HEAP: Trying to free an invalid address 00262FF8!

*** Assertion failed: FreeEntry->PreviousSize == CurrentEntry->Size

***   Source File: /srv/buildbot/Build_GCCLin_x86/build/sdk/lib/rtl/heap.c, line 995

Break repeatedly, break Once, Ignore, terminate Process or terminate Thread (boipt)? 

kdb:>

 o

Execute '.cxr 0022F750' to dump context

Unhandled exception

ExceptionCode:    80000003

CS:EIP 1b:7c92db82

DS 23 ES 23 FS 3b GS 0

EAX: 00000000   EBX: 00000000   ECX: 0022f4d4

EDX: 00000000   EBP: 0022fa30   ESI: 0022fa1e   ESP: 0022f734

EDI: 7c9736a4   EFLAGS: 00000216

Address:

<ntdll.dll:db82> (C:\ReactOS\System32\ntdll.dll@7c920000)

Frames:

<ntdll.dll:23364> (C:\ReactOS\System32\ntdll.dll@7c920000)

<ntdll.dll:24566> (C:\ReactOS\System32\ntdll.dll@7c920000)

<msxml3.DLL:19126> (C:\ReactOS\System32\msxml3.DLL@75b00000)

<msxml3.DLL:2051a> (C:\ReactOS\System32\msxml3.DLL@75b00000)

<msxml3.DLL:2056a> (C:\ReactOS\System32\msxml3.DLL@75b00000)

<msxml3.DLL:46c13> (C:\ReactOS\System32\msxml3.DLL@75b00000)

<msxml3.DLL:18b81> (C:\ReactOS\System32\msxml3.DLL@75b00000)

<msxml3_winetest.exe:39537> (C:\ReactOS\bin\msxml3_winetest.exe@400000)

<msxml3_winetest.exe:3fe1a> (C:\ReactOS\bin\msxml3_winetest.exe@400000)

<msxml3_winetest.exe:6bafa> (C:\ReactOS\bin\msxml3_winetest.exe@400000)

<msxml3_winetest.exe:6c0af> (C:\ReactOS\bin\msxml3_winetest.exe@400000)

<msxml3_winetest.exe:6c111> (C:\ReactOS\bin\msxml3_winetest.exe@400000)

<kernel32.dll:10b57> (C:\ReactOS\system32\kernel32.dll@7c710000)

...

Test domdoc completed in 0.62 seconds.