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Re: Cygwin/bash: need environment variables >32K
On Thu, 23 Oct 2003, Nicolas BUONOMO wrote:
> Corinna Vinschen a ecrit :
> > On Thu, Oct 23, 2003 at 11:39:39AM +0200, david.liberce wrote:
> >>I reproduce this behaviour.
> >>Looks like the PATH environment variable is not valid anymore after $VAR
> >>has been asigned?
> > Nope. I debugged this situation. It looks like a Windows restriction.
> > When trying to call CreateProcess() with this long environment variable
> > in the environment block, CreateProcess() fails with Windows error 87,
> > "The parameter is incorrect." But there's no hint about a limit in the
> > CreateProcess() man page.
> > *dig, dig, dig*
> > Uh, ok, I found the following hint in the GetEnvironmentVariable() man page:
> > lpBuffer
> > [out] Pointer to a buffer that receives the contents of the specified
> > environment variable. An environment variable has a maximum size limit
> > of 32,767 characters, including the null-terminating character.
> > So, that explains it.
> > Corinna
> I think it's possible to change the size of the environnement for
> the DOS box. I have do that for DOS application (on NT4), but I
> don't remeber how. I try to find it.
It's the "/E" flag to cmd.exe. However, that doesn't help you, as it only
increases the size of the *total* environment. Each individual
environment variable is still limited to 32k. That's Windows for you.
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