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  1. Groovy
  2. GROOVY-5518

Static Type Checker: Cannot return null with type checking enabled

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Details

    • Bug
    • Status: Closed
    • Critical
    • Resolution: Duplicate
    • 2.0-rc-2
    • 2.0-rc-3
    • None
    • None

    Description

      Example:

      import groovy.transform.CompileStatic
      
      @CompileStatic
      File foo() {
        if(true) {
           return new File("blah")
        }
        return null
      }
      

      This results in

      [Static type checking] - Cannot return value of type java.lang.Object on method returning type java.io.File -> java.io.File
       at line: 8, column: 10
      

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            melix C├ędric Champeau
            graemerocher Graeme Rocher
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            Dates

              Created:
              Updated:
              Resolved: