From 9675f7ac35061616b1770751dc4303671c1e0ebe Mon Sep 17 00:00:00 2001
From: Gurusamy Sarathy <gsar@cpan.org>
Date: Mon, 24 May 1999 02:34:20 +0000
Subject: [PATCH] oops, some files missing in change#3449

p4raw-link: @3449 on //depot/perl: 18228614d1dac2db099ef3d8846e53f44accce72

p4raw-id: //depot/perl@3450
---
 op.c   | 25 +++++++++++++++++++++++++
 op.h   |  1 +
 toke.c |  1 +
 3 files changed, 27 insertions(+)

diff --git a/op.c b/op.c
index 0697764..8f19121 100644
--- a/op.c
+++ b/op.c
@@ -5412,6 +5412,31 @@ ck_subr(OP *o)
 		    goto wrapref;	/* autoconvert GLOB -> GLOBref */
 		else if (o2->op_type == OP_CONST)
 		    o2->op_private &= ~OPpCONST_STRICT;
+		else if (o2->op_type == OP_ENTERSUB) {
+		    /* accidental subroutine, revert to bareword */
+		    OP *gvop = ((UNOP*)o2)->op_first;
+		    if (gvop && gvop->op_type == OP_NULL) {
+			gvop = ((UNOP*)gvop)->op_first;
+			if (gvop) {
+			    for (; gvop->op_sibling; gvop = gvop->op_sibling)
+				;
+			    if (gvop &&
+				(gvop->op_private & OPpENTERSUB_NOPAREN) &&
+				(gvop = ((UNOP*)gvop)->op_first) &&
+				gvop->op_type == OP_GV)
+			    {
+				GV *gv = (GV*)((SVOP*)gvop)->op_sv;
+				OP *sibling = o2->op_sibling;
+				op_free(o2);
+				o2 = newSVOP(OP_CONST, 0,
+					     newSVpvn(GvNAME(gv),
+						      GvNAMELEN(gv)));
+				prev->op_sibling = o2;
+				o2->op_sibling = sibling;
+			    }
+			}
+		    }
+		}
 		scalar(o2);
 		break;
 	    case '\\':
diff --git a/op.h b/op.h
index 03ea2af..125e115 100644
--- a/op.h
+++ b/op.h
@@ -125,6 +125,7 @@ typedef U32 PADOFFSET;
 #define OPpENTERSUB_DB		16	/* Debug subroutine. */
   /* OP_RV2CV only */
 #define OPpENTERSUB_AMPER	8	/* Used & form to call. */
+#define OPpENTERSUB_NOPAREN	128	/* bare sub call (without parens) */
   /* OP_?ELEM only */
 #define OPpLVAL_DEFER		16	/* Defer creation of array/hash elem */
   /* for OP_RV2?V, lower bits carry hints */
diff --git a/toke.c b/toke.c
index df45a56..441839b 100644
--- a/toke.c
+++ b/toke.c
@@ -3233,6 +3233,7 @@ int yylex(PERL_YYLEX_PARAM_DECL)
 		    /* Resolve to GV now. */
 		    op_free(yylval.opval);
 		    yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv));
+		    yylval.opval->op_private |= OPpENTERSUB_NOPAREN;
 		    PL_last_lop = PL_oldbufptr;
 		    PL_last_lop_op = OP_ENTERSUB;
 		    /* Is there a prototype? */
-- 
2.7.4