RFR: 8264766: ClassCastException during template compilation (Variable can not be cast to Param)

[Joe Wang]

On Mon, 7 Jun 2021 18:49:19 GMT, Joe Wang <joehw at openjdk.org> wrote:

> Fixes the addVariable/addParam methods in the SymbolTable to check types before casting.

Thanks Naoto!   
Yeah, we're trying to keep the code level at 8 at the moment unless necessary (e.g. the optional elements for Deprecated), pattern matching for instanceof is a bit new.

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PR: https://git.openjdk.java.net/jdk/pull/4398