Date:	Thu, 17 Nov 2005 14:41:36 +0100
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: fork problem in latest snapshot on Win98
Message-ID:	<20051117134135.GA9970@calimero.vinschen.de>
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On Nov 17 04:18, Eric Blake wrote:
> I'm getting a repeatable fork memory allocation error with snapshot
> 20051116 on Win98, when trying to build CVS head of libtool; this was
> not a problem with 20051020.
> 
> $ make
> cd . && /bin/sh ./config.status libtool
> config.status: executing libtool commands
> make  all-recursive
> make[1]: Entering directory `/home/eblake/libtool'
> make[2]: Entering directory `/home/eblake/libtool'
> if /bin/sh ./libtool --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -I.
> -DLTDLOPEN=libltdl -DLT_CONFIG_H='<config.h>' -DLTDL -I. -I. -Ilibltdl -I./liblt
> dl -I./libltdl/libltdl   -g2 -Wall -MT libltdl/loaders/libltdl_libltdl_la-preope
> n.lo -MD -MP -MF "libltdl/loaders/.deps/libltdl_libltdl_la-preopen.Tpo" -c -o li
> bltdl/loaders/libltdl_libltdl_la-preopen.lo `test -f 'libltdl/loaders/preopen.c'
>  || echo './'`libltdl/loaders/preopen.c; \
> then mv -f "libltdl/loaders/.deps/libltdl_libltdl_la-preopen.Tpo" "libltdl/loade
> rs/.deps/libltdl_libltdl_la-preopen.Plo"; else rm -f "libltdl/loaders/.deps/libl
> tdl_libltdl_la-preopen.Tpo"; exit 1; fi
> [Popup box - "This program has performed an illegal operation
> and will be shut down...
> SH caused an invalid page fault in
> module CYGWIN1.DLL at 015f:6108c79c.]
>     890 [main] sh 16120485 fork_copy: user/cygwin data pass 0 failed, 0x456000..
> 0x458290, done 0, windows pid 4278937159, Win32 error 1067
> ./libtool: fork: No error
> make[2]: *** [libltdl/loaders/libltdl_libltdl_la-preopen.lo] Error 1
> make[2]: Leaving directory `/home/eblake/libtool'
> make[1]: *** [all-recursive] Error 1
> make[1]: Leaving directory `/home/eblake/libtool'
> make: *** [all] Error 2
> $ strace -o ../strace.txt make
> make: *** [vcl-tmp] Segmentation fault (core dumped)
> 
> What makes it particularly weird is that ./libtool reports "fork: No error".
> I'm guessing it is something in the snapshot, since the popup box
> refers to a cygwin address, but don't know what to look for in the
> strace for a more accurate diagnosis.  The attached .bz2 contains
> both the strace and my cygcheck output.

Strange.  I can't reproduce it on my 98 box.  make runs fine up to the
point of some undefined symbol in a later link stage.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat, Inc.

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