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From:	Achim Gratz <Stromeko AT nexgo DOT de>
To:	cygwin AT cygwin DOT com
Subject:	Re: Advice for debugging heap mismatches? (Win10 Insider build 14926)
References:	<DM2PR0201MB079977535C2477CA6B0EF745A7F30 AT DM2PR0201MB0799 DOT namprd02 DOT prod DOT outlook DOT com> <DM2PR0201MB07990C9272767BC3A62529C2A7CB0 AT DM2PR0201MB0799 DOT namprd02 DOT prod DOT outlook DOT com> <57E700EA DOT 2040802 AT maxrnd DOT com> <DM2PR0201MB079975A16D4E98A8B20250EEA7CC0 AT DM2PR0201MB0799 DOT namprd02 DOT prod DOT outlook DOT com> <DM2PR0201MB079958F9EBD05C7DED300E16A7C30 AT DM2PR0201MB0799 DOT namprd02 DOT prod DOT outlook DOT com>
Date:	Sun, 02 Oct 2016 14:03:47 +0200
In-Reply-To:	<DM2PR0201MB079958F9EBD05C7DED300E16A7C30@DM2PR0201MB0799.namprd02.prod.outlook.com> (Tony Kelman's message of "Sun, 2 Oct 2016 06:55:25 +0000")
Message-ID:	<87r37z3ql8.fsf@Rainer.invalid>
User-Agent:	Gnus/5.13 (Gnus v5.13) Emacs/25.1.50 (gnu/linux)
MIME-Version:	1.0

Tony Kelman writes:
>> Could you paste a complete sample of the error message so we can
>> determine where in the Cygwin code it's coming from?
>
> Still a problem in 14936. Folks, this could be very bad. Anyone at all
> testing the insider builds, or are we going to be blindsided when an
> update goes out to everyone that breaks cygwin?

How about you start with a sane PATH that doesn#t contain all the
Windows stuff?  Set a system variable CYGWIN_NOWINPATH=true and try
again.

> Here's one:
>
>       1 [main] cp (6432) C:\cygwin64\bin\cp.exe: *** fatal error - cygheap base mismatch detected - 0x180302408/0xD92408.
> This problem is probably due to using incompatible versions of the
> cygwin DLL.

Something occupies the heap area for Cygwin, based on the low address.
What does /proc/self/maps tell you?

> And another:
>
>       0 [main] cmake 10384 child_info_fork::abort: C:\cygwin64\bin\cygintl-8.dll: Loaded to different address: parent(0x3E3680000) != child(0x190000)

Again either an address collision or some BLODA intercepting the DLL,
check the memory maps to see what might be going on.


Regards,
Achim.
-- 
+<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+

Waldorf MIDI Implementation & additional documentation:
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