cgen: fix array_init_with_default

vlib/v/gen/cgen.v

@@ -979,7 +979,7 @@ fn (mut g Gen) gen_assign_stmt(assign_stmt ast.AssignStmt) {
 					has_val = it.has_val
 					if it.has_default {
 						elem_type_str := g.typ(it.elem_type)
-						g.write('$elem_type_str ${elem_type_str}_val_t = ')
+						g.write('$elem_type_str _val_$it.pos.pos = ')
 						g.expr(it.default_expr)
 						g.writeln(';')
 					}
@@ -3862,7 +3862,7 @@ fn (mut g Gen) array_init(it ast.ArrayInit) {
 		}
 		g.write('sizeof($elem_type_str), ')
 		if it.has_default {
-			g.write('&${elem_type_str}_val_t)')
+			g.write('&_val_$it.pos.pos)')
 		} else {
 			g.write('0)')
 		}

vlib/v/tests/array_init_test.v

@@ -16,9 +16,15 @@ fn test_array_init() {
 }
 
 fn test_array_init_with_default() {
-	a := []int{len: 4, init: 2}
-	assert '$a' == '[2, 2, 2, 2]'
+	a1 := []int{len: 4, init: 2}
+	assert '$a1' == '[2, 2, 2, 2]'
 
-	b := []string{len: 3, init: 'abc'}
-	assert '$b' == "['abc', 'abc', 'abc']"
+	a2 := []int{len: 3, init: 12345}
+	assert '$a2' == '[12345, 12345, 12345]'
+
+	b1 := []string{len: 3, init: 'abc'}
+	assert '$b1' == "['abc', 'abc', 'abc']"
+
+	b2 := []string{len: 2, init: '111'}
+	assert '$b2' == "['111', '111']"
 }