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Bug
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Resolution: Fixed
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P2
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8u40, 9
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None
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b37
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generic
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generic
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Verified
Issue | Fix Version | Assignee | Priority | Status | Resolution | Resolved In Build |
---|---|---|---|---|---|---|
JDK-8085127 | emb-9 | Vladimir Ivanov | P2 | Resolved | Fixed | team |
JDK-8065479 | 8u45 | Vladimir Ivanov | P2 | Resolved | Fixed | b01 |
JDK-8063127 | 8u40 | Vladimir Ivanov | P2 | Closed | Fixed | b15 |
JDK-8070031 | emb-8u47 | Vladimir Ivanov | P2 | Resolved | Fixed | team |
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;
public class NullProvider {
public static Boolean getBoolean() { return null; }
public static void main(String[] args) throws Throwable {
MethodHandle mh = MethodHandles.lookup().findStatic(NullProvider.class, "getBoolean", MethodType.methodType(Boolean.class));
mh = MethodHandles.explicitCastArguments(mh, MethodType.methodType(boolean.class));
System.out.println(mh.invoke());
}
}
throws:
Exception in thread "main" java.lang.NullPointerException
at sun.invoke.util.ValueConversions.unboxBoolean(ValueConversions.java:95)
at jdk.nashorn.test.models.NullProvider.main(NullProvider.java:13)
Expected result would be printing "false", as per documentation for explicitCastArgument that says "If T0 is a reference and T1 a primitive, and if the reference is null at runtime, a zero value is introduced."
This happens with 9 builds (e.g. just reproduced it with 9 b34). 8 builds (e.g. recent 8u40 early access release builds) seem to behave okay.
- backported by
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JDK-8065479 NPE with explicitCastArguments unboxing null
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- Resolved
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JDK-8070031 NPE with explicitCastArguments unboxing null
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- Resolved
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JDK-8085127 NPE with explicitCastArguments unboxing null
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- Resolved
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JDK-8063127 NPE with explicitCastArguments unboxing null
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- Closed
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- blocks
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JDK-8059443 Logical NOT operator throws NullPointerException for null Boolean return values
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- Resolved
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- relates to
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JDK-8141423 [mlvm] revise MH::explicitCastArguments usage
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- Open
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JDK-8060717 [TESTBUG] Improve test coverage of MethodHandles.explicitCastArguments()
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- Resolved
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