Re: I cannot run zsh: child state waiting for longjmp

Re: I cannot run zsh: child state waiting for longjmp

[Peter Stephenson]

(Moved to zsh-workers.)

On Wed, 4 Aug 2010 15:12:12 -0700 (PDT)
"Peter A. Castro" <doctor@fruitbat.org> wrote:
> On Mon, 2 Aug 2010, Peter Stephenson wrote:
> >> I built zsh-4.3.10 on MSYS on Win XP.
> >> It's working fine but Whenever I set path to whatever value, let's
> >> say: path=(. /usr/local/bin /mingw/bin /bin)
> >>
> >> and run whatever command, let's say ls, I get:
> >>
> >> --------------------
> >> $ path=(. /usr/local/bin /mingw/bin /bin)
> >> $ ls
> >>        0 [main] zsh 1556 sync_with_child: child 444(0x6AC) died
> >> before initialization with status code 0xC0000135
> >>    17380 [main] zsh 1556 sync_with_child: *** child state waiting
> >> for longjmp
> >> zsh: fork failed: resource temporarily unavailable
> >> --------------------
> 
> Unfortunately, I'm seeing this same kind of symptom under Cygwin
> (1.7.5) when I run 'make check'.  Several of the tests generate
> something similar to the above while others just plain hang and I
> have to kill the subshells in order for it to continue.  I'm not sure
> how much of this is Cygwin and how much of it is zsh.  I'll attempt
> to debug it but I don't have the time right now.

I'm not seeing any problems this basic with the latest zsh code on my setup
with Windows XP and a Cygwin from April (setup.exe claims it's 1.7.5-1).  I
am seeing failing tests with process substitutions hanging; we've had this
issue before and been back and forth between the two possible
implementations to try to fix it.  Apart from that, I don't think we're
going to get further within zsh without more detail of the failures:
relevant Cygwin changes / Windows versions / zsh configurations.

Here's a change for the MACHINES file.  I think the paragraph I've removed
is well out of date.

Index: MACHINES
===================================================================
RCS file: /cvsroot/zsh/zsh/MACHINES,v
retrieving revision 1.8
diff -p -u -r1.8 MACHINES
--- MACHINES	16 May 2009 12:13:00 -0000	1.8
+++ MACHINES	5 Aug 2010 12:02:31 -0000
@@ -46,10 +46,13 @@ Red Hat Inc.: Cygwin
 	`binmode'). There are various issues with Cygwin versions before
 	1.3.2 - you are adviced to update to the latest release.
 
-	Dynamic loading works as of cygwin-1.1.3 and binutils-20000722-1.
-	It was not tested for earlier versions. This does not imply
-	that every module will work. New completion and in
-	particular zsh/zftp and zsh/mathfunc are known to work.
+	Process substitution using <(...), >(...), =(...) may be
+	problematic.  Different versions of zsh and Cygwin have
+	a different mix of issues.
+
+	Problems handling subprocesses have been reported with Cygwin
+	1.7.5.  It is not currently known how the problems split between
+	Cygwin and zsh.
 
 	Some of the tests in the Test subdirectory are known to fail:
 	this is because the UNIX environment is not completely implemented.

-- 
Peter Stephenson <pws@csr.com>            Software Engineer
Tel: +44 (0)1223 692070                   Cambridge Silicon Radio Limited
Churchill House, Cambridge Business Park, Cowley Road, Cambridge, CB4 0WZ, UK


Member of the CSR plc group of companies. CSR plc registered in England and Wales, registered number 4187346, registered office Churchill House, Cambridge Business Park, Cowley Road, Cambridge, CB4 0WZ, United Kingdom

Re: I cannot run zsh: child state waiting for longjmp

[Peter A. Castro]

On Thu, 5 Aug 2010, Peter Stephenson wrote:

> (Moved to zsh-workers.)
>
> On Wed, 4 Aug 2010 15:12:12 -0700 (PDT)
> "Peter A. Castro" <doctor@fruitbat.org> wrote:
>> On Mon, 2 Aug 2010, Peter Stephenson wrote:
>>>> I built zsh-4.3.10 on MSYS on Win XP.
>>>> It's working fine but Whenever I set path to whatever value, let's
>>>> say: path=(. /usr/local/bin /mingw/bin /bin)
>>>>
>>>> and run whatever command, let's say ls, I get:
>>>>
>>>> --------------------
>>>> $ path=(. /usr/local/bin /mingw/bin /bin)
>>>> $ ls
>>>>        0 [main] zsh 1556 sync_with_child: child 444(0x6AC) died
>>>> before initialization with status code 0xC0000135
>>>>    17380 [main] zsh 1556 sync_with_child: *** child state waiting
>>>> for longjmp
>>>> zsh: fork failed: resource temporarily unavailable
>>>> --------------------
>>
>> Unfortunately, I'm seeing this same kind of symptom under Cygwin
>> (1.7.5) when I run 'make check'.  Several of the tests generate
>> something similar to the above while others just plain hang and I
>> have to kill the subshells in order for it to continue.  I'm not sure
>> how much of this is Cygwin and how much of it is zsh.  I'll attempt
>> to debug it but I don't have the time right now.
>
> I'm not seeing any problems this basic with the latest zsh code on my setup
> with Windows XP and a Cygwin from April (setup.exe claims it's 1.7.5-1).  I

Hmm... I'll see if I can rustle up some output to show it (machine is
down at the moment).  Cygwin 1.7.5-1 is the current runtime, but I've
seen these issues as early as 1.7.0 (which is why I hadn't released it
4.3.10 for Cygwin until very recently).

> am seeing failing tests with process substitutions hanging; we've had this

Yes, I've seen this too.  I remember seeing some discussion about why
this might be hanging but thought it might have some relationship to the
I/O redirection issues I've been seeing.  Just a guess, really.

> issue before and been back and forth between the two possible
> implementations to try to fix it.  Apart from that, I don't think we're
> going to get further within zsh without more detail of the failures:
> relevant Cygwin changes / Windows versions / zsh configurations.

I agree.  I'll see if I can get some debug time put in to it.  :-)

> Here's a change for the MACHINES file.  I think the paragraph I've removed
> is well out of date.

Ah, so, we cover it up in doc and claim it as a "feature"?  Good, good :-)

> Index: MACHINES
> ===================================================================
> RCS file: /cvsroot/zsh/zsh/MACHINES,v
> retrieving revision 1.8
> diff -p -u -r1.8 MACHINES
> --- MACHINES	16 May 2009 12:13:00 -0000	1.8
> +++ MACHINES	5 Aug 2010 12:02:31 -0000
> @@ -46,10 +46,13 @@ Red Hat Inc.: Cygwin
> 	`binmode'). There are various issues with Cygwin versions before
> 	1.3.2 - you are adviced to update to the latest release.
>
> -	Dynamic loading works as of cygwin-1.1.3 and binutils-20000722-1.
> -	It was not tested for earlier versions. This does not imply
> -	that every module will work. New completion and in
> -	particular zsh/zftp and zsh/mathfunc are known to work.
> +	Process substitution using <(...), >(...), =(...) may be
> +	problematic.  Different versions of zsh and Cygwin have
> +	a different mix of issues.
> +
> +	Problems handling subprocesses have been reported with Cygwin
> +	1.7.5.  It is not currently known how the problems split between
> +	Cygwin and zsh.
>
> 	Some of the tests in the Test subdirectory are known to fail:
> 	this is because the UNIX environment is not completely implemented.
>
>

-- 
Peter A. Castro <doctor@fruitbat.org> or <Peter.Castro@oracle.com>
 	"Cats are just autistic Dogs" -- Dr. Tony Attwood