commit https://github.com/vim/vim/commit/75bdf6aa30a5c99d67c42886cf7a4a000bbaa422 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Jan 7 21:25:08 2016 +0100 patch 7.4.1058 Problem: It is not possible to test code that is only reached when memory allocation fails. Solution: Add the alloc_fail() function. Try it out with :vimgrep.

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