empty switches -- bug128

R=r OCL=20520 CL=20522

empty switches -- bug128
R=r OCL=20520 CL=20522
a0a14b98 · Ken Thompson · c597845e · a0a14b98 · a0a14b98
Commit a0a14b98 authored Dec 04, 2008 by Ken Thompson
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Showing with 3 additions and 3 deletions

src/cmd/6g/gen.c src/cmd/6g/gen.c +2 -0

src/cmd/gc/walk.c src/cmd/gc/walk.c +1 -3

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--- a/src/cmd/6g/gen.c
+++ b/src/cmd/6g/gen.c
@@ -536,6 +536,8 @@ swgen(Node *n)
 	c1 = listfirst(&save1, &n->nbody);
 	while(c1 != N) {
 		setlineno(c1);
+		if(c1->op == OEMPTY)
+			break;
 		if(c1->op != OCASE) {
 			if(s0 == C && dflt == P)
 				yyerror("unreachable statements in a switch");

--- a/src/cmd/gc/walk.c
+++ b/src/cmd/gc/walk.c
@@ -277,9 +277,7 @@ loop:
 		if(top != Etop)
 			goto nottop;
-		if(!casebody(n->nbody))
+		casebody(n->nbody);
-			yyerror("switch statement must have case labels");
 		if(n->ntest == N)
 			n->ntest = booltrue;
 		walkstate(n->ninit);