Need something like PMCNULL for STRINGs

[dukeleto]

I talked to chromatic about occasionally getting a null byte '\0' back when a Parrot STRING was expected and he said this was because parrot has no concept like STRINGNULL.

[NotFound]

You can hardly get a byte when a STRING * is expected, you get a NULL pointer, unless your code is very broken.

Of course, NULL is numerically zero and the same for '\0'.

Having a STRINGNULL value other than (STRING *) NULL is pointless in the current implementation because Parrot string have no vtables or similar mechanics.

[plobsing]

Parrot now has a STRINGNULL whose behaviour more or less emulates PMCNULL.