fix

vlib/v/gen/c/if.v

@@ -260,6 +260,15 @@ fn (mut g Gen) if_expr(node ast.IfExpr) {
 					cond.expr_type
 				}
 				g.writeln('${g.styp(g.unwrap_generic(cond_expr_type))} ${var_name};')
+			} else if cond.expr is ast.IndexExpr {
+				value_type := g.table.value_type(g.unwrap_generic(cond.expr.left_type))
+				if value_type.has_flag(.option) {
+					var_name := g.new_tmp_var()
+					guard_vars[i] = var_name
+					g.writeln('${g.styp(value_type)} ${var_name};')
+				} else {
+					guard_vars[i] = ''
+				}
 			} else {
 				guard_vars[i] = ''
 			}

vlib/v/tests/options/option_ifguard_array_of_option_test.v

@@ -0,0 +1,14 @@
+module main
+
+fn make_option() ?string {
+	return 'abc'
+}
+
+fn main() {
+	cols := [make_option()]
+	if col := cols[0] {
+		assert col == 'abc'
+		assert true
+		dump(col)
+	}
+}