FULL PRODUCT VERSION :
java version "1.8.0_66"
Java(TM) SE Runtime Environment (build 1.8.0_66-b18)
Java HotSpot(TM) 64-Bit Server VM (build 25.66-b18, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows [Version 6.1.7601]

A DESCRIPTION OF THE PROBLEM :
When a reference of type "Object" is cast directly to the primitive type "boolean", javac compiler accepts this without errors.
However, if the reference has the type of a type-variable (which should become "Object" during compilation), the cast is not possible.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
See description

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Both casts should produce a compiler error.
ACTUAL -
C:\Users\zith\Documents\Test.java:9: error: incompatible types: T cannot be converted to boolean
                        boolean bool = (boolean) t;
                                                 ^
  where T is a type-variable:
    T extends Object declared in class Test.TestInner
1 error

This error message is only produced if "t" is of the generic type "T", but not if "t" is of type "Object" itself.

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
public class Test {
	public static void main (String[] args) {
		 Object o = new Object();
                // cast from Object to boolean, works without error
 		boolean bool = (boolean) o;
	 }
	
	class TestInner<T> {
		public void doCast(T t) {
                        // cast from T to boolean, produces a compiler error
 			boolean bool = (boolean) t;
 		}
	}
}
---------- END SOURCE ----------