Add cv_set_call_checker_flags

This is like cv_set_call_checker, except that it allows the caller to
decide whether the call checker needs a GV.

Currently the GV flag is recorded, but ck_subr does not do anything
with it yet.

1 files changed, 1 insertions, 0 deletions

diff --git a/mg.h b/mg.h
index 81ed296f8a..0f2fa292fb 100644
--- a/mg.h
+++ b/mg.h
@@ -33,6 +33,7 @@ struct magic {
 
 #define MGf_TAINTEDDIR 1        /* PERL_MAGIC_envelem only */
 #define MGf_MINMATCH   1        /* PERL_MAGIC_regex_global only */
+#define MGf_REQUIRE_GV 1        /* PERL_MAGIC_checkcall only */
 #define MGf_REFCOUNTED 2
 #define MGf_GSKIP      4	/* skip further GETs until after next SET */
 #define MGf_COPY       8	/* has an svt_copy  MGVTBL entry */