[Bug 38725] New: valgrind shows an invalid write in ole32/tests/usrmarshal.c

https://bugs.winehq.org/show_bug.cgi?id=38725

Bug ID: 38725
           Summary: valgrind shows an invalid write in
                    ole32/tests/usrmarshal.c
           Product: Wine
           Version: 1.7.44
          Hardware: x86
                OS: Linux
            Status: NEW
          Keywords: download, source, testcase, valgrind
          Severity: normal
          Priority: P2
         Component: ole32
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: Fedora

../../../tools/runtest -q -P wine -T ../../.. -M ole32.dll -p ole32_test.exe.so
usrmarshal && touch usrmarshal.ok
==1724== Invalid write of size 2
==1724==    at 0x400A583: _intel_fast_memcpy (vg_replace_strmem.c:947)
==1724==    by 0x4D3FD7D: SNB_UserUnmarshal (usrmarshal.c:2256)
==1724==    by 0x4802F25: test_marshal_SNB (usrmarshal.c:851)
==1724==    by 0x4803107: func_usrmarshal (usrmarshal.c:881)
==1724==    by 0x4803E78: run_test (test.h:584)
==1724==    by 0x48042C0: main (test.h:666)
==1724==  Address 0x468b75c is 11 bytes after a block of size 25 alloc'd
==1724==    at 0x7BC4A9F1: notify_alloc (heap.c:254)
==1724==    by 0x7BC4EC94: RtlAllocateHeap (heap.c:1715)
==1724==    by 0x4D01025: IMalloc_fnAlloc (ifs.c:186)
==1724==    by 0x4D0187C: IMalloc_Alloc (objidl.h:1236)
==1724==    by 0x4D0187C: CoTaskMemAlloc (???:0)
==1724==    by 0x47FF452: user_allocate (usrmarshal.c:51)
==1724==    by 0x4D3FD24: SNB_UserUnmarshal (usrmarshal.c:2250)
==1724==    by 0x4802F25: test_marshal_SNB (usrmarshal.c:851)
==1724==    by 0x4803107: func_usrmarshal (usrmarshal.c:881)
==1724==    by 0x4803E78: run_test (test.h:584)
==1724==    by 0x48042C0: main (test.h:666)
==1724==