commit https://github.com/vim/vim/commit/edb4f2b3601b0abd47091606269c0ac3244a805b Author: Bram Moolenaar <Bram@vim.org> Date: Sat Feb 27 15:27:23 2016 +0100 patch 7.4.1428 Problem: Compiler warning for non-virtual destructor. Solution: Make it virtual. (Yasuhiro Matsumoto)

/* auto/if_perl.c */
int perl_enabled(int verbose);
void perl_end(void);
void msg_split(char_u *s, int attr);
void perl_win_free(win_T *wp);
void perl_buf_free(buf_T *bp);
void ex_perl(exarg_T *eap);
void do_perleval(char_u *str, typval_T *rettv);
void ex_perldo(exarg_T *eap);