RFR (XXS): 8071788: CountingWrapper.asType() is broken
vladimir.x.ivanov at oracle.com
Wed Jan 28 17:22:57 UTC 2015
There's a type mismatch between MethodHandle and LambdaForm in
CountingWrapper.asTypeUncached(). Sometimes, it leads to a VM crash.
The fix is to use adapted MethodHandle to construct LambdaForm.
There's no way to reproduce this problem with vanilla 8u40/9 binaries,
because CountingWrapper is used only to block inlinining in GWT
(MHI::profile() on target and fallback MethodHandles).
It means there's no way to call CountingWrapper.asType() on wrapped
MethodHandles outside of java.lang.invoke code, and there are no such
calls inside it.
Testing: manual, java/lang/invoke
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