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Re: cygheap base mismatch detected
- From: Corinna Vinschen <corinna-cygwin at cygwin dot com>
- To: cygwin at cygwin dot com
- Date: Thu, 1 Mar 2012 11:51:39 +0100
- Subject: Re: cygheap base mismatch detected
- References: <4F4E7CC8.email@example.com>
- Reply-to: cygwin at cygwin dot com
On Feb 29 14:30, Charles Wilson wrote:
> I've been running into a strange "error" lately (that is, I first
> noticed it for sure on 1.7.10, but it MIGHT have occurred also on 1.7.9.
> It persists on 1.7.11). cygcheck -- and *only* cygcheck -- is reporting
> a cygheap base mismatch but only on an XP64 machine:
> $ cygcheck -cd cygwin
> 1 [main] cygcheck (3756) C:\cygwin\bin\cygcheck.exe: *** fatal
> error - cygheap base mismatch detected - 0x61270870/0x2170870.
> This problem is probably due to using incompatible versions of the
> cygwin DLL.
> Search for cygwin1.dll using the Windows Start->Find/Search facility
> and delete all but the most recent version. The most recent version
> reside in x:\cygwin\bin, where 'x' is the drive on which you have
> installed the cygwin distribution. Rebooting is also suggested if you
> are unable to find another cygwin DLL.
> Cygwin Package Information
> Package Version
> cygwin 1.7.11-1
> (Note that cygcheck actually *does* complete the requested command,
> after the error message from (cygwin1.dll/dcrt0.cc?) is printed.
Very strange. For two reasons. First of all, why is the mismatch
message printed at all? The code in question is basically:
if (res->cygheap != (void *) &_cygheap_start)
But res->cygheap and &_cygheap_start are apparently identical, so why
is multiple_cygwin_problem called?
And then multiple_cygwin_problem calls api_fatal to print the message
which means that ultimately TerminateProcess() is called.
I tried that on my XP64 test machine and cygcheck worked fine.
Could you do a parallel installation on the same machine and see how it
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Project Co-Leader cygwin AT cygwin DOT com
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