1 files changed, 1 insertions, 0 deletions
diff --git a/mg.h b/mg.h
index 0f2fa292fb..3aa2401faa 100644
--- a/mg.h
+++ b/mg.h
@@ -40,6 +40,7 @@ struct magic {
 #define MGf_DUP     0x10 	/* has an svt_dup   MGVTBL entry */
 #define MGf_LOCAL   0x20	/* has an svt_local MGVTBL entry */
 #define MGf_BYTES   0x40        /* PERL_MAGIC_regex_global only */
+#define MGf_PERSIST    0x80     /* PERL_MAGIC_lvref only */
 
 #define MgTAINTEDDIR(mg)	(mg->mg_flags & MGf_TAINTEDDIR)
 #define MgTAINTEDDIR_on(mg)	(mg->mg_flags |= MGf_TAINTEDDIR)