code review 3435042: Fixes issue 1324.

src/cmd/gc/typecheck.c

Index: src/cmd/gc/typecheck.c
===================================================================
--- a/src/cmd/gc/typecheck.c
+++ b/src/cmd/gc/typecheck.c
@@ -1491,8 +1491,10 @@
 	if(t->etype == TSTRUCT || t->etype == TINTER)
 		f1 = lookdot1(s, t, t->type, dostrcmp);
 
+	tt = n->left->type;
+
 	f2 = T;
-	if(n->left->type == t || n->left->type->sym == S) {
+	if(tt == t || tt->sym == S || (n->op == ODOTPTR && tt->type == t)) {
 		f2 = methtype(t);
 		if(f2 != T) {
 			// Use f2->method, not f2->xmethod: adddot has
@@ -1510,7 +1512,7 @@
 		n->xoffset = f1->width;
 		n->type = f1->type;
 		if(t->etype == TINTER) {
-			if(isptr[n->left->type->etype]) {
+			if(isptr[tt->etype]) {
 				n->left = nod(OIND, n->left, N);	// implicitstar
 				typecheck(&n->left, Erv);
 			}
@@ -1520,7 +1522,6 @@
 	}
 
 	if(f2 != T) {
-		tt = n->left->type;
 		dowidth(tt);
 		rcvr = getthisx(f2->type)->type->type;
 		if(!eqtype(rcvr, tt)) {
@@ -1534,6 +1535,15 @@
 				n->left = nod(OIND, n->left, N);
 				n->left->implicit = 1;
 				typecheck(&n->left, Etype|Erv);
+			} else if (tt->etype == tptr && rcvr->etype == tptr &&
+				eqtype(tt->type, rcvr->type)) {
+				checklvalue(n->left, "call pointer method on");
+				addrescapes(n->left);
+				n->left = nod(OIND, n->left, N);
+				n->left->implicit = 1;
+				n->left = nod(OADDR, n->left, N);
+				n->left->implicit = 1;
+				typecheck(&n->left, Etype|Erv);
 			} else {
 				// method is attached to wrong type?
 				fatal("method mismatch: %T for %T", rcvr, tt);