[perl #128466] perl debugger magic comarison does not work sometimes

On Thu Jun 23 09:25:22 2016, kes-kes@yandex.ru wrote:
> The documentations says:
> http://perldoc.perl.org/perldebguts.html#Debugger-Internals
> Values in this array are magical in numeric context: they compare
> equal to zero only if the line is
> not breakable.
> 
> But that is not true.

> How to reproduce:
... skipped lots of stuff ...
> Argument "BEGIN{\n" isn't numeric in numeric ne (!=) at
> /home/kes/perl5/perlbrew/perls/perl-
> 5.24.0/lib/site_perl/5.24.0/Devel/DebugHooks.pm line 589, <> line 6.

etc.

It seems that the array of source lines (@{"_<$filename"}) does not have a numeric value for unbreakable lines.  That means that you get a non-numeric warning.  Nevertheless, it still compares equal to 0 numerically, so technically the documentation is correct.

I’m not saying something shouldn’t be fixed.  Maybe it’s the documentation that needs clarification.

-- 

Father Chrysostomos


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via perlbug:  queue: perl5 status: new
https://rt.perl.org/Ticket/Display.html?id=128466

• [perl #128466] perl debugger magic comarison does not work sometimes by KES
• [perl #128466] perl debugger magic comarison does not work sometimes by Father Chrysostomos via RT