Hi,

can someone explain to me what is happening in CORE::GLOBAL for mere curiosity...

If I do e.g. 

perl -e 'print \&CORE::GLOBAL::sleep'
CODE(0x563c8adc73e0)

[download]
it seems CORE::GLOBAL::sleep is a code-ref, yet 
perl -e '&CORE::GLOBAL::sleep(1)'
Undefined subroutine &CORE::GLOBAL::sleep called at -e line 1.

[download]
I cannot call it directly. Even weirder is 
perl -e 'print \&CORE::GLOBAL::hubbabubba'
CODE(0x561b6472f3e0)/

[download]
so it seems every arbitary code-slot in CORE::GLOBAL is (virtually) filled with the same code-ref that probably points to some interception logic but I am surprised that there are code-refs that cannot be called...

I am aware that CORE::GLOBAL is for allowing built-ins to be redefined but this surprises me...

Can anybody with some knowlege of the internals shed some light on this?

Many thanks!

In reply to CORE::GLOBAL magic? by morgon

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