[Perl/perl5] 8c5e6c: regcomp.c: validate \g{...} contents past first nu...

[mauke via perl5-changes]

  Branch: refs/heads/blead
  Home:   https://github.com/Perl/perl5
  Commit: 8c5e6c3e3cd33a65ad726e6a04d1ad19e87b6d5a
      
https://github.com/Perl/perl5/commit/8c5e6c3e3cd33a65ad726e6a04d1ad19e87b6d5a
  Author: Lukas Mai <lukasmai....@gmail.com>
  Date:   2025-03-04 (Tue, 04 Mar 2025)

  Changed paths:
    M pod/perldelta.pod
    M regcomp.c
    M t/re/reg_mesg.t

  Log Message:
  -----------
  regcomp.c: validate \g{...} contents past first number

This code used to silently accept \g{123trailing garbage} as long as it
started with a valid number.

Fixes #23050.



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