Details
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Type:
Bug
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Status:
Closed
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Priority:
Major
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Resolution: Fixed
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Affects Version/s: 1.8.5
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Fix Version/s: 1.8.6, 2.0-beta-3
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Component/s: groovy-jdk
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Labels:None
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Environment:Windows XP and LINUX
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Testcase included:yes
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Number of attachments :
Description
If a constant in a sub-interface replaces/shadows a constant in a super interface (both Java), when trying to access the sub-interface's constant value from Groovy, the behaviour is intermittantly incorrect - sometimes the sub-interface's value is returned (correct) and sometimes the super interface's value is returned (incorrect).
In Java the sub-interface's value is always returned, as expected.
See source code below that demonstrates this: InterfaceA.java, InterfaceB.java, ShowBugGroovy.groovy, ShowBugJava.java
If ShowBugGroovy is repeatedly run, sometimes the assertion fails, sometimes it passes (randomly?). I believe the behaviour is the same for concrete implementations of the sub-interface.
package groovybug; public interface InterfaceA { String FOO="Foo A"; }
package groovybug; public interface InterfaceB extends InterfaceA { String FOO="Foo B"; }
package groovybug class ShowBugGroovy { static main(args) { println("Interface A: " + InterfaceA.FOO); println("Interface B: " + InterfaceB.FOO); // Fails randomly assert(InterfaceA.FOO!=InterfaceB.FOO) } }
package groovybug; public class ShowBugJava { public static void main(String[] args) { System.out.println("Interface A: " + InterfaceA.FOO); System.out.println("Interface B: " + InterfaceB.FOO); // Always passes assert(!InterfaceA.FOO.equals(InterfaceB.FOO)); } }
Issue Links
- is related to
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GROOVY-5335
Constants defined in sub-interfaces which hide super-interface constants evaluate unpredictably
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