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JavaFX編譯器編譯重載方法的一處BUG

直接看測試代碼吧，一共2個類：BugTest.fx和A.fx，SDK版本是1.2.3。

/*
* BugTest.fx
*
* Created on 2010-2-25, 22:05:11
*/
package org.jqueen.fx.bug;

/**
* @author Leon
*/
public class BugTest {

// 取消該方法注釋編譯將拋出異常
//    function test(a: A): Void {
//        test(5);
//    }

    function test(s: String): Void {
        test(5);
    }

    function test(i: Integer): Void {
    }

}

/*
* A.fx
*
* Created on 2010-2-25, 22:10:45
*/

package org.jqueen.fx.bug;

/**
* @author Leon
*/

public mixin class A {}

BugTest里實現(xiàn)了3個帶輸入參數(shù)的重載方法，第一個方法的參數(shù)是自定義類型A，A被聲明為mixin，后2個的參數(shù)是原始類型。只有在第一個方法被注釋的情況下該類才可以被編譯通過，否則編譯器會拋出異常:

An exception has occurred in the OpenJavafx compiler. Please file a bug at the Openjfx-compiler issues home (https://openjfx-compiler.dev.java.net/Issues) after checking for duplicates. Include the following diagnostic in your report and, if possible, the source code which triggered this problem. Thank you.

java.lang.ClassCastException: com.sun.tools.javac.code.Symbol$ClassSymbol

at com.sun.tools.javafx.code.JavafxTypes.asSuper(JavafxTypes.java:202)

at com.sun.tools.javac.code.Types.isSubtypeUnchecked(Types.java:305)

at com.sun.tools.javafx.comp.JavafxResolve.argumentsAcceptable(JavafxResolve.java:421)

at com.sun.tools.javafx.comp.JavafxResolve.rawInstantiate(JavafxResolve.java:387)

at com.sun.tools.javafx.comp.JavafxResolve.selectBest(JavafxResolve.java:711)

at com.sun.tools.javafx.comp.JavafxResolve.findMemberWithoutAccessChecks(JavafxResolve.java:952)

at com.sun.tools.javafx.comp.JavafxResolve.findMember(JavafxResolve.java:906)

at com.sun.tools.javafx.comp.JavafxResolve.findMember(JavafxResolve.java:886)

at com.sun.tools.javafx.comp.JavafxResolve.findVar(JavafxResolve.java:567)

at com.sun.tools.javafx.comp.JavafxResolve.findIdent(JavafxResolve.java:1228)

at com.sun.tools.javafx.comp.JavafxResolve.resolveIdent(JavafxResolve.java:1423)

at com.sun.tools.javafx.comp.JavafxAttr.visitIdent(JavafxAttr.java:506)

at com.sun.tools.javafx.tree.JFXIdent.accept(JFXIdent.java:52)

at com.sun.tools.javafx.comp.JavafxAttr.attribTree(JavafxAttr.java:280)

at com.sun.tools.javafx.comp.JavafxAttr.attribTree(JavafxAttr.java:265)

at com.sun.tools.javafx.comp.JavafxAttr.attribExpr(JavafxAttr.java:311)

at com.sun.tools.javafx.comp.JavafxAttr.visitFunctionInvocation(JavafxAttr.java:2239)

at com.sun.tools.javafx.tree.JFXFunctionInvocation.accept(JFXFunctionInvocation.java:53)

at com.sun.tools.javafx.comp.JavafxAttr.attribTree(JavafxAttr.java:280)

at com.sun.tools.javafx.comp.JavafxAttr.attribTree(JavafxAttr.java:265)

at com.sun.tools.javafx.comp.JavafxAttr.attribExpr(JavafxAttr.java:303)

at com.sun.tools.javafx.comp.JavafxAttr.visitBlockExpression(JavafxAttr.java:1373)

at com.sun.tools.javafx.tree.JFXBlock.accept(JFXBlock.java:83)

at com.sun.tools.javafx.comp.JavafxAttr.attribTree(JavafxAttr.java:280)

at com.sun.tools.javafx.comp.JavafxAttr.attribTree(JavafxAttr.java:265)

at com.sun.tools.javafx.comp.JavafxAttr.attribExpr(JavafxAttr.java:311)

at com.sun.tools.javafx.comp.JavafxAttr.finishFunctionDefinition(JavafxAttr.java:1863)

at com.sun.tools.javafx.comp.JavafxMemberEnter$SymbolCompleter.complete(JavafxMemberEnter.java:646)

at com.sun.tools.javac.code.Symbol.complete(Symbol.java:400)

at com.sun.tools.javafx.comp.JavafxAttr.visitFunctionDefinition(JavafxAttr.java:1658)

at com.sun.tools.javafx.tree.JFXFunctionDefinition.accept(JFXFunctionDefinition.java:93)

at com.sun.tools.javafx.comp.JavafxAttr.attribTree(JavafxAttr.java:280)

at com.sun.tools.javafx.comp.JavafxAttr.attribTree(JavafxAttr.java:265)

at com.sun.tools.javafx.comp.JavafxAttr.attribExpr(JavafxAttr.java:321)

at com.sun.tools.javafx.comp.JavafxMemberEnter$SymbolCompleter.complete(JavafxMemberEnter.java:643)

at com.sun.tools.javac.code.Symbol.complete(Symbol.java:400)

at com.sun.tools.javafx.comp.JavafxResolve.findMemberWithoutAccessChecks(JavafxResolve.java:943)