Ensure that the pointer to S_incpush_use_sep() is never NULL.

1 files changed, 5 insertions, 1 deletions

diff --git a/proto.h b/proto.h
index a2139dbaa7..0fb1c33dba 100644
--- a/proto.h
+++ b/proto.h
@@ -4760,7 +4760,11 @@ STATIC void	S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
 
 STATIC void	S_forbid_setid(pTHX_ const char flag, const bool suidscript);
 STATIC void	S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags);
-STATIC void	S_incpush_use_sep(pTHX_ const char *p, U32 flags);
+STATIC void	S_incpush_use_sep(pTHX_ const char *p, U32 flags)
+			__attribute__nonnull__(pTHX_1);
+#define PERL_ARGS_ASSERT_INCPUSH_USE_SEP	\
+	assert(p)
+
 STATIC void	S_init_interp(pTHX);
 STATIC void	S_init_ids(pTHX);
 STATIC void	S_init_main_stash(pTHX);