cgen: minor sum type fix

vlib/v/gen/cgen.v

@@ -1014,7 +1014,7 @@ fn (g mut Gen) match_expr(node ast.MatchExpr) {
 			match fe {
 				ast.Type {
 					it_type := g.typ(it.typ)
-					g.writeln('$it_type* it = ($it_type*)tmp3.obj; // ST it')
+					g.writeln('$it_type* it = ($it_type*)${tmp}.obj; // ST it')
 				}
 				else {
 					verror('match sum type')

vlib/v/gen/tests/3.c

@@ -41,11 +41,11 @@ void println(string s) {
 void handle_expr(Expr e) {
 	Expr tmp1 = e;
 	if (tmp1.typ == _type_idx_IfExpr) {
-		IfExpr* it = (IfExpr*)tmp3.obj; // ST it
+		IfExpr* it = (IfExpr*)tmp1.obj; // ST it
 		println(tos3("if"));
 	}
 	else if (tmp1.typ == _type_idx_IntegerLiteral) {
-		IntegerLiteral* it = (IntegerLiteral*)tmp3.obj; // ST it
+		IntegerLiteral* it = (IntegerLiteral*)tmp1.obj; // ST it
 		println(tos3("integer"));
 	}
 	else {
@@ -62,5 +62,7 @@ int main() {
 	user.name = tos3("bob");
 	Option_int n = get_opt();
 	int a = /*opt*/(*(int*)n.data) + 3;
+	handle_expr((IfExpr){
+0});
 	return 0;
 }

vlib/v/gen/tests/3.vv

@@ -46,4 +46,5 @@ fn main() {
 		return
 	}
 	a := n + 3
+	handle_expr(IfExpr{})
 }

vlib/v/parser/parser.v

@@ -1620,7 +1620,7 @@ fn (p mut Parser) match_expr() ast.MatchExpr {
 			}
 			p.scope.register_var(ast.Var{
 				name: 'it'
-				typ: typ
+				typ: table.type_to_ptr(typ)
 			})
 			// TODO
 			if p.tok.kind == .comma {