[ros-dev] Heap Issues

[Aleksey Bragin]

This means, the heap fails to remove the free block, because free  
block's forward or backward pointer is invalid. Which is a very  
probably scenario, when an allocated block of heap is overwritten.


WBR,
Aleksey.


On Dec 17, 2010, at 5:02 AM, James Tabor wrote:

> I've tested my patches with 49720 so far the wine user Dialog works.
> Upping to 50046 and repeating the test since 50000, this happens,
>
> (subsystems/win32/win32k/ntuser/window.c:2067)
> co_UserCreateWindowEx(): NCCREATE message failed
> (subsystems/win32/win32k/ntuser/window.c:2339)  
> co_UserCreateWindowEx failed!
>
> kdb:> bt
> Eip:
> <ntdll.dll:92b1> lib/rtl/heap.c:358 (RtlpRemoveFreeBlock at 16)
> Frames:
> <ntdll.dll:b189> lib/rtl/heap.c:2193 (RtlAllocateHeap at 12)
> <user32.dll:32610> dialog.c:157 (DIALOG_get_info)
> <user32.dll:3369c> dialog.c:1577 (DefDlgProcA at 16)
> <user32.dll:495dc> message.c:1091 (@IntCallWindowProcW at 28)
> <user32.dll:49ead> message.c:2449 (User32CallWindowProcFromKernel at 8)
> <ntdll.dll:7a84>
> <user32.dll:542c5> window.c:409 (CreateWindowExA at 48)
> <user32.dll:343bf> dialog.c:925 (DIALOG_CreateIndirect)
> <user32.dll:352c0> dialog.c:1764 (DialogBoxParamA at 20)
> <user32_winetest.exe:2055c>
> <user32_winetest.exe:22065>
> <user32_winetest.exe:a36e6>
> <user32_winetest.exe:a38fb>
> <user32_winetest.exe:a3d95>
> <user32_winetest.exe:a3dde>
>
> it faults at 0x00000004,,,....
>
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