Thodoris Sotiropoulos created GROOVY-11496:
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             Summary: missing type mismatch when indexing lists
                 Key: GROOVY-11496
                 URL: https://issues.apache.org/jira/browse/GROOVY-11496
             Project: Groovy
          Issue Type: Bug
          Components: Static Type Checker
            Reporter: Thodoris Sotiropoulos


I have the following program
{code:java}
class Test {
  public static void main(String[] args) {
    List<Boolean> x = [true];
    List<Boolean> y = [true];
    x[y]
  }
} {code}
h3. Actual behavior

The code compiles, but there's runtime error
{code:java}
Exception in thread "main" 
org.codehaus.groovy.runtime.typehandling.GroovyCastException: Cannot cast 
object 'true' with class 'java.lang.Boolean' to class 'int'
    at 
org.codehaus.groovy.runtime.typehandling.DefaultTypeTransformation.castToNumber(DefaultTypeTransformation.java:177)
    at 
org.codehaus.groovy.runtime.typehandling.DefaultTypeTransformation.intUnbox(DefaultTypeTransformation.java:85)
    at 
org.codehaus.groovy.runtime.DefaultGroovyMethods.getAt(DefaultGroovyMethods.java:6195)
    at Test.main(test.groovy:5) {code}
h3. Expected behavior

The code should have been rejected.



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