1 files changed, 2 insertions, 1 deletions
diff --git a/perly.y b/perly.y
index 231c22ff42..af62341bba 100644
--- a/perly.y
+++ b/perly.y
@@ -43,7 +43,8 @@
 %start prog
 
 %union {
-    I32	ival;
+    I32	ival; /* __DEFAULT__ (marker for regen_perly.pl;
+				must always be 1st union member) */
     char *pval;
     OP *opval;
     GV *gvval;