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Date:	Thu, 26 Dec 2024 08:56:35 +0900
To:	cygwin AT cygwin DOT com
Subject:	Re: bash hangs on cygwin-3.5.5-1
Message-Id:	<20241226085635.d2c3e5826ee9084b7e5b34ac@nifty.ne.jp>
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	<20241225230039 DOT caa84eb17ec46c305b1ca1ca AT nifty DOT ne DOT jp>
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From:	Takashi Yano via Cygwin <cygwin AT cygwin DOT com>
Reply-To:	Takashi Yano <takashi DOT yano AT nifty DOT ne DOT jp>
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On Wed, 25 Dec 2024 15:33:13 -0800 (PST)
Jeremy Drake wrote:
> On Wed, 25 Dec 2024, Takashi Yano via Cygwin wrote:
> 
> > On Tue, 24 Dec 2024 22:34:44 +0100
> > Bruno Haible wrote:
> > > This is not reproducible, but here's the report anyway:
> > >
> > > I upgraded a Windows 10 system from Cygwin 3.5.3 to 3.5.5 today.
> > > Then ran the configure script of a tarball (*), and it hung:
> > >
> > > $ mkdir build-cygwin64
> > > $ cd build-cygwin64
> > > $ ../configure --host=x86_64-pc-cygwin --prefix=/usr/local/cygwin64 CC=x86_64-pc-cygwin-gcc CXX=x86_64-pc-cygwin-g++ CPPFLAGS="-I/usr/local/cygwin64/include -Wall" LDFLAGS=-L/usr/local/cygwin64/lib -C --with-included-libunistring 2>&1 | tee log1
> > > ...
> > > checking whether snprintf fully supports the 'n' directive... (cached) yes
> > > checking whether snprintf respects a size of 1... (cached) yes
> > > checking whether vsnprintf respects a zero size as in C99... (cached) yes
> > > checking whether btowc is declared without a macro... yes
> > > checking whether wctob is declared without a macro... yes
> > > checking whether mbsinit is declared without a macro... yes
> > > checking whether mbrtowc is declared without a macro... yes
> > > <hangs>
> > >
> > > Typing Ctrl-C in said mintty window has no effect.
> > >
> > >
> > > (*) generated in a gnulib checkout on Linux, through
> > >     $ ./gnulib-tool --create-testdir --dir=../testdir-all --with-c++-tests --without-privileged-tests --single-configure `./all-modules`
> >
> > This may be the same issue with:
> > https://cygwin.com/pipermail/cygwin/2024-December/256954.html
> 
> We ran into hang issues with libtool linking imagemagick in msys2, using
> version based on 3.5.5, 3 times in a row on our ARM64 runner.  We applied
> your v2 patch to our 3.5.5 branch (with the change of current_sig to sig),
> and the issue no longer occurred.  (I also tested with the existing 3.5.4
> version, and it didn't hang either).

Thanks for testing v2 patch.

> Note that kill -CHLD to either the child sh.exe or the parent make.exe did
> not unblock things, but killing sh.exe (SIGTERM) did cause the make to
> fail as expected.

Perhaps, the signal that sh is waiting for is different than
that of zsh case.

-- 
Takashi Yano <takashi DOT yano AT nifty DOT ne DOT jp>

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