On Jan 7, 2011, at 2:48 AM, Christian Thalinger wrote: > Wait a second... I doubt this is a false negative in VerifyMethodHandles. > The MethodHandleWalker can't find a raw retype conversion function and that's > why it crashes. Maybe it is a false negative but then we are missing some > conversion logic in the walker too.
Right, I had forgotten! The bytecode won't verify; that's why raw retypes are different from normal ones. In the case of a retype-raw, the Java code promises that what's on the stack will not break the verifier's invariants, even though the types don't match. For spinning bytecodes, do this: - ref to primitive: discard ref, push zero - primitive to ref: discard primitive, push null - primitive to boolean: narrow to int, isolate lowest bit (push #1, iand) - other primitive to narrower primitive: perform extra narrowing operations (l2i, i2*) -- John _______________________________________________ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev
