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List:       vim-dev
Subject:    Re: VIM crashes in one extreme situation
From:       "Antoine J. Mechelynck" <antoine.mechelynck () belgacom ! net>
Date:       2005-02-24 17:18:49
Message-ID: 421E0C79.4000401 () belgacom ! net
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Alejandro López-Valencia wrote:
> Vince Negri wrote:
> 
>>Ok, trying that example I get the
>>"pattern caused out-of-stack error" message, same as
>>Bram.
>>
>>It looks like antoine's build (done with win32 gcc) doesn't
>>support the stack checking.
> 
> 
> An optimization bug in gcc's Mingw port perhaps?
> 
> I can confirm that my home-brewed native win32 binaries present the same 
> crash both vim 6.3.52 and a very recent vim7 snapshot. Therefore there 
> is a problem with the Mingw GCC distributed with Cygwin (3.3.3 + extra 
> mods), which is what I have. We can rule out a problem with GNU 
> binutils, because the Cygwin binaries (that is, linked to the POSIX 
> emulation library that uses the newlib C runtime) give an out of bounds 
> error as expected, yet were created with the same linker.
> 
> Now we need some one who is using Mingw 3.4 out there to confirm if 
> he/she has the bug as well.

Does the bug appear identically in vim.exe / gvim.exe on the one hand 
(non-debug builds) and in vimd.exe / gvimd.exe on the other hand (debug 
builds)? If there is an optimization bug, it is possible that it appears 
only in the non-debug builds since IIUC the debug builds are slightly 
less speed-optimized, for the sake of traceability.

Best regards,
Tony.

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