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Subject:	Re: cpp /usr/include/threads.h fails; modfl segfaults
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Date:	Sat, 29 Aug 2020 22:56:39 -0400
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From:	Ken Brown via Cygwin <cygwin AT cygwin DOT com>
Reply-To:	Ken Brown <kbrown AT cornell DOT edu>
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X-MIME-Autoconverted:	from quoted-printable to 8bit by delorie.com id 07U2vFA3025456

On 8/29/2020 9:21 PM, airplanemath via Cygwin wrote:
> Stepping back through Cygwin releases, I find:
> 
> $ gcc -Og -ggdb -g3 -Wall -Wextra -std=c99 -pedantic test.c -o test.exe
> 
> $ ./test.exe 123.456
> 123.456000 0.456000 123.000000
> 
> $ uname -a | sed "s/${HOSTNAME}/\${HOSTNAME}/g"
> CYGWIN_NT-10.0 ${HOSTNAME} 3.1.4(0.340/5/3) 2020-02-19 08:49 x86_64 Cygwin
> 
> $ gcc --version
> gcc (GCC) 9.3.0
> Copyright (C) 2019 Free Software Foundation, Inc.
> This is free software; see the source for copying conditions.� There is NO
> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
> 
> 
> 3.1.5 crashed the same way as 3.1.7.� There's nothing obvious in the
> 3.1.5 announcement [1],
> so I'm stuck again.

OK, so the problem was introduced between 3.1.4 and 3.1.5.  It should be pretty 
easy to bisect and find the culprit.  I'll do that tomorrow if no one beats me 
to it.

Ken
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