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Re: perl-5.37.1 breaks texinfo-6.8

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Karl Williamson
July 10, 2022 01:42
Re: perl-5.37.1 breaks texinfo-6.8
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On 7/9/22 02:59, Uwe Düffert wrote:
> Dear Karl and perl5-porters,
> On Fri, 8 Jul 2022, Karl Williamson wrote:
>> Please then try adding the attached patch to your perl, and see if the 
>> problem is solved.
> Well, I'd say it "modifies" the problem. With perl-5.37.1 with this 
> patch, the offending perl command from texinfo does not panic anymore. 
> Instead, it creates a 300K and then continues to run with 
> full CPU usage forever (or at least until manually terminated after 5min).
> With perl-5.37.0, the offending command instead creates a tiny 
> and 3 ~300K texinfo-{1,2,3}.info and finishes in like 1 
> second.
>> And in any case please send us the output of the Linux command
>> locale -a
> Sure. Nothing fancy I'm aware of:
> $> locale -a
> C
> C.utf8
> de_DE
> de_DE@euro
> de_DE.iso88591
> de_DE.iso885915@euro
> de_DE.utf8
> en_US
> en_US.iso88591
> en_US.utf8

Thanks for the info.  With it, I am able to reproduce this problem on my 
box.  But that it fails only when no DEBUGGING makes it harder to figure 

The loop is probably because texinfo has a while(1) loop calling perl's 
setlocale for each entry returned from 'locale -a'.

I have run valgrind, and it shows no problems with DEBUGGING; early 
failures without.  These buffer overrun failures are likely causing the 
infinite loop when valgrind isn't there to prevent them from actually 
corrupting memory.

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