FULL PRODUCT VERSION :
java version "1.8.0_74"
Java(TM) SE Runtime Environment (build 1.8.0_74-b02)
Java HotSpot(TM) 64-Bit Server VM (build 25.74-b02, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Windows 10,
Fedora 22,


A DESCRIPTION OF THE PROBLEM :
When using JDK8 and using -source 1.8 -target 1.8 compiling of code provided below fails to compile with error
"incompatible types: java.lang.Object cannot be converted to T"

If we use -source 1.7 -target 1.7 JDK8 javac compiles the code without problems.

Same code compiles on JDK7

If we use JDK9-ea+107, it also compiles without problems no mater what -source/-target we use.

Simple reproducer can also be found at https://github.com/ctomc/jdk8-compiler

REGRESSION. Last worked in version 7u76

ADDITIONAL REGRESSION INFORMATION:
java version "1.7.0_72"
Java(TM) SE Runtime Environment (build 1.7.0_72-b14)
Java HotSpot(TM) Client VM (build 24.72-b04, mixed mode, sharing)

It also compiles correctly when using JDK9-ea (both jigsaw and normal builds)
java version "9-ea"
Java(TM) SE Runtime Environment (build 9-ea+107-jigsaw-nightly-h4560-20160301)
Java HotSpot(TM) 64-Bit Server VM (build 9-ea+107-jigsaw-nightly-h4560-20160301, mixed mode)

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Use JDK8 with -source 1.8 -target 1.8 and try to compile



EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
compile successes
ACTUAL -
compile fails

ERROR MESSAGES/STACK TRACES THAT OCCUR :
Option.java:[12,37] incompatible types: java.lang.Object cannot be converted to T

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
public class Option {
    interface ValueParser<T> {
        T parseValue(String string, ClassLoader classLoader) throws IllegalArgumentException;
    }

    static <T> Option.ValueParser<T> getEnumParser(final Class<T> enumType) {
        return new ValueParser<T>() {
            public T parseValue(final String string, final ClassLoader classLoader) throws IllegalArgumentException {
                return enumType.cast(Enum.valueOf(enumType.asSubclass(Enum.class), string.trim()));
            }
        };
    }
}
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Rearrange code and manually cast.

  static <T, E extends Enum<E>> Option.ValueParser<T> getEnumParser(final Class<T> enumType) {
        return new ValueParser<T>() {
            public T parseValue(final String string, final ClassLoader classLoader) throws IllegalArgumentException {
                return enumType.cast(Enum.<E>valueOf(asEnum(enumType), string.trim()));
            }
        };
    }

    @SuppressWarnings("unchecked")
    private static <T, E extends Enum<E>> Class<E> asEnum(final Class<T> enumType) {
        return (Class<E>) enumType;
    }