No, that's not right. Internals::functions may be used by user-code but only by code that allows that perl internals are allowed to change from version to version.
That's rather playing with semantics. The OP was presumably talking about real code, not introspection. The p5pers reserve the right to change or completely remove functions in Internals:: between releases.

Dave.

In reply to Re^4: Constant string reference by dave_the_m
in thread Constant string reference by przemo

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