gc: implement goto restriction
Remove now-unnecessary zeroing of stack frames.
R=ken2
CC=golang-dev
https://golang.org/cl/4641044
diff --git a/src/cmd/gc/typecheck.c b/src/cmd/gc/typecheck.c
index 04dc1a5..dfe0f30 100644
--- a/src/cmd/gc/typecheck.c
+++ b/src/cmd/gc/typecheck.c
@@ -2716,6 +2716,11 @@
default:
fatal("typecheckdef %O", n->op);
+ case OGOTO:
+ case OLABEL:
+ // not really syms
+ break;
+
case OLITERAL:
if(n->ntype != N) {
typecheck(&n->ntype, Etype);
@@ -2772,7 +2777,7 @@
if(n->defn == N) {
if(n->etype != 0) // like OPRINTN
break;
- if(nerrors > 0) {
+ if(nsavederrors+nerrors > 0) {
// Can have undefined variables in x := foo
// that make x have an n->ndefn == nil.
// If there are other errors anyway, don't
