Name: gm110360 Date: 05/06/2004


FULL PRODUCT VERSION :
java version "1.5.0-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-beta-b32c)
Java HotSpot(TM) Client VM (build 1.5.0-beta-b32c, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP [Version 5.1.2600]

A DESCRIPTION OF THE PROBLEM :
In 1.4.2, expressions like

interface I1 (void f1(); }
interface I2 (void f2(); }
class CI1 implements I1, I2 { ...}
class CI2 implements I1, I2 {...}

void m(boolean z, CI1 ci1, CI2 ci2) {
  (z? ci1: ci2).m1();
}

does not compile. In 1.5 beta 1, they compiles but generates a NoSuchMethodExpression at runtime.


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Compile and run the example. In 1.4.2 if does not compile and in 1.5 beta 1 it compiles but fails at runtime.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
C:\orpe\jtst>c:\j2sdk1.4.2_02\bin\javac cond_ternary1\Test2.java
cond_ternary1\Test2.java:35: incompatible types for ?: neither is a subtype of the other
second operand: cond_ternary1.Test2.CI1
third operand : cond_ternary1.Test2.CI2
    (z ? x1 : x2).f1();
       ^
cond_ternary1\Test2.java:36: incompatible types for ?: neither is a subtype of the other
second operand: cond_ternary1.Test2.CI1
third operand : cond_ternary1.Test2.CI2
    (z ? x1 : x2).f2();
       ^
2 errors

ACTUAL -
C:\orpe\jtst_15>"c:\j2sdk1.5.0\bin\javac" -source 1.5 cond_ternary1\Test2.java

C:\orpe\jtst_15>

ERROR MESSAGES/STACK TRACES THAT OCCUR :
C:\orpe\jtst_15>"c:\j2sdk1.5.0\bin\java" cond_ternary1.Test2
Exception in thread "main" java.lang.NoSuchMethodError: cond_ternary1.Test2$I1.f
2()V
        at cond_ternary1.Test2.invoke_f1_f2_with_CI(Test2.java:36)
        at cond_ternary1.Test2.main(Test2.java:31)

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
package cond_ternary1;

public class Test2 {

  interface I1 {
    void f1();
  };
    
  interface I2 {
    void f2();
  };

  static class CI1 implements I1, I2 {
    public void f1() {
    };
    public void f2() {
    };
  }

  static class CI2 implements I1, I2 {
    public void f1() {
    };
    public void f2() {
    };
  }

  public static void main(String[] args) {
    CI1 ci1 = new CI1();
    CI2 ci2 = new CI2();
    new Test2().invoke_f1_f2_with_CI(true, ci1, ci2);
  }

  void invoke_f1_f2_with_CI(boolean z, CI1 x1, CI2 x2) {
    (z ? x1 : x2).f1();
    (z ? x1 : x2).f2();
  }
}

---------- END SOURCE ----------
(Incident Review ID: 261183)
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