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https://issues.apache.org/jira/browse/WICKET-5647?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Peter Ertl updated WICKET-5647:
-------------------------------
Description:
when trying to compile wicket-7 from HEAD it fails under OS X / JDK 1.8.0_11.
Casting a NULL to generic type (T) solves the issues. This seems like some odd
case of failing type inference.
The problematic source line is:
{{return getEnumImpl(key, eClass, null);}}
The compiler error is:
{{Error:(792, 35) java: incompatible types: inference variable T has
incompatible upper bounds java.lang.Enum<T>,T}}
This will fix the issue:
{{return getEnumImpl(key, eClass, *(T)*null);}}
I found that there is a fix WICKET-5427 which does not work in most current JDK
1.8.0_11 anymore. --Could not change the wicket-6 branch since the change will
break the clirr plugin (see WICKET-5427).--
was:
when trying to compile wicket-7 from HEAD it fails under OS X / JDK 1.8.0_11.
Casting a NULL to generic type (T) solves the issues. This seems like some odd
case of failing type inference.
The problematic source line is:
return getEnumImpl(key, eClass, null);
The compiler error is:
Error:(792, 35) java: incompatible types: inference variable T has
incompatible upper bounds java.lang.Enum<T>,T
This will fix the issue:
return getEnumImpl(key, eClass, (T)null);
I found that there is a fix WICKET-5427 which does not work in most current JDK
1.8.0_11 anymore. --Could not change the wicket-6 branch since the change will
break the clirr plugin (see WICKET-5427).--
> missing generic cast causes compile error on OS X / jdk 8
> ---------------------------------------------------------
>
> Key: WICKET-5647
> URL: https://issues.apache.org/jira/browse/WICKET-5647
> Project: Wicket
> Issue Type: Bug
> Components: wicket
> Affects Versions: 6.16.0, 7.0.0-M2
> Environment: OS X 10.9.4
> JDK 1.8.0_11
> Reporter: Peter Ertl
> Assignee: Peter Ertl
> Fix For: 7.0.0-M3, 6.17.0
>
>
> when trying to compile wicket-7 from HEAD it fails under OS X / JDK 1.8.0_11.
> Casting a NULL to generic type (T) solves the issues. This seems like some
> odd case of failing type inference.
> The problematic source line is:
> {{return getEnumImpl(key, eClass, null);}}
> The compiler error is:
> {{Error:(792, 35) java: incompatible types: inference variable T has
> incompatible upper bounds java.lang.Enum<T>,T}}
> This will fix the issue:
> {{return getEnumImpl(key, eClass, *(T)*null);}}
> I found that there is a fix WICKET-5427 which does not work in most current
> JDK 1.8.0_11 anymore. --Could not change the wicket-6 branch since the change
> will break the clirr plugin (see WICKET-5427).--
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