perl-Devel-CallChecker

Custom op checking attached to subroutines

This module makes some new features of the Perl 5.14.0 C API available to XS modules running on older versions of Perl. The features are centered around the function cv_set_call_checker, which allows XS code to attach a magical annotation to a Perl subroutine, resulting in resolvable calls to that subroutine being mutated at compile time by arbitrary C code. This module makes cv_set_call_checker and several supporting functions available. (It is possible to achieve the effect of cv_set_call_checker from XS code on much earlier Perl versions, but it is painful to achieve without the centralized facility.)

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