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Re: Trouble with PERLIO_INIT/PERLIO_TERM changes

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Steve Hay
November 29, 2006 10:11
Re: Trouble with PERLIO_INIT/PERLIO_TERM changes
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Jarkko Hietaniemi wrote:
>> No shared streams here, I'm afraid. The shared file open business just
>> lets you control whether or not other processes can also read and/or
>> write a file that you've just opened. Sort of like flock(), only
>> mandatory rather than advisory.
>> And in my reply to Yves I showed exactly the same problem crops
>> up with plain old fopen() too.
>> So presumably something is wrong somewhere in PerlIO-land that causes
>> the refcnt to be decremented too far, and this new croak() is simply
>> revealing a bug that has probably been there since the year dot?
> Possibly.  Something is causing the refcnt to become out of sync.
> Have you tried setting $ENV{PERLIO_DEBUG} to point to a file?
> (The file will be overwritten with PerlIO's internal mumblings.)

Attached is the output of running "perl -Mblib" in my Foo module 
with PERLIO_DEBUG pointing to a file.

This time the test program dies with "refcnt_dec: fd 4: 0 <= 0" 
(presumably debug.txt itself is now fd 3).

I'm not sure that it helps me very much.

I'm leaving now, but I'll have a closer look tomorrow (unless you've 
sorted it all out by then ;-)


Radan Computational Ltd.

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