Initial commit from sysy-main

testdata/functional/52_scope.sy

@@ -0,0 +1,27 @@
+int a = 7;
+
+int func() {
+	int b = a;
+	int a = 1;
+	if (a == b) {
+		a = a + 1;
+		return 1;
+	}
+	else
+		return 0;
+}
+
+int main() {
+	int result = 0;
+	int i = 0;
+	while (i < 100) {
+		if (func() == 1)
+			result = result + 1;
+		i = i + 1;
+	}
+	if (result < 100)
+		putint(1);
+	else
+		putint(0);
+	return 0;
+}