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Posted to notifications@groovy.apache.org by "Thodoris Sotiropoulos (Jira)" <ji...@apache.org> on 2021/03/01 15:14:00 UTC
[jira] [Created] (GROOVY-9960) STC fails to report missing
constructor
Thodoris Sotiropoulos created GROOVY-9960:
---------------------------------------------
Summary: STC fails to report missing constructor
Key: GROOVY-9960
URL: https://issues.apache.org/jira/browse/GROOVY-9960
Project: Groovy
Issue Type: Bug
Components: Static Type Checker
Affects Versions: 3.0.7
Reporter: Thodoris Sotiropoulos
I have the following (incorrect) program
{code:java}
class A {
String x;
public A(String x) {
this.x = x;
}
}
class B extends A {}
public class Main {
public static void main(String[] args) {
B x = new B();
}
}
{code}
h3. Actual Behaviour
The program compiles and when I run it I get the following RuntimeException, because we are missingĀ constructor for class `A` that takes no parameters.
{code:java}
Exception in thread "main" java.lang.NoSuchMethodError: A: method 'void <init>()' not found
at B.<init>(test.groovy)
at Main.main(test.groovy:13)
{code}
h3. Expected Behaviour
The program should not compile and should report an error message. Note that javac reports something to the following
{code:java}
Main.java:8: error: constructor A in class A cannot be applied to given types;
class B extends A {}
^
required: String
found: no arguments
reason: actual and formal argument lists differ in length
{code}
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