RFR (S) 8001108: an attempt to use "<init>" as a method name should elicit NoSuchMethodException

Christian Thalinger christian.thalinger at oracle.com
Thu Sep 19 00:05:09 UTC 2013


+     * methods as if they were normal methods, but the JVM verifier rejects them.

I think you should say "JVM byte code verifier" here.

+         * <em>(Note:  JVM internal methods named {@code <init>} not visible to this API,
+         * even though the {@code invokespecial} instruction can refer to them
+         * in special circumstances.  Use {@link #findConstructor findConstructor}

Not exactly sure but should this read "are not visible"?

         MemberName resolveOrFail(byte refKind, Class<?> refc, String name, MethodType type) throws NoSuchMethodException, IllegalAccessException {
+            type.getClass();  // NPE
             checkSymbolicClass(refc);  // do this before attempting to resolve
-            name.getClass(); type.getClass();  // NPE
+            checkMethodName(refKind, name);

Could you add a comment here saying that checkMethodName does an implicit null pointer check on name?  Maybe a comment for checkMethodName too.

What was the problem with the null pointer exceptions?  Is it okay that we might throw another exception before null checking name?

On Sep 12, 2013, at 6:47 PM, John Rose <john.r.rose at oracle.com> wrote:

> Please review this change for a change to the JSR 292 implementation:
> http://cr.openjdk.java.net/~jrose/8001108/webrev.00
> Summary: add an explicit check for leading "<", upgrade the unit tests
> The change is mostly to javadoc and unit tests, documenting and testing some corner cases of JSR 292 APIs.
> In the RI, there is an explicit error check.
> Thanks,
> — John
> P.S. Since this is a change which oriented toward JSR 292 functionality, the review request is to mlvm-dev and core-libs-dev.
> Changes which are oriented toward performance will go to mlvm-dev and hotspot-compiler-dev.
> _______________________________________________
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> mlvm-dev at openjdk.java.net
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