I hate EWFL tree nodes in GCJ. So many of the ICEs (internal compiler errors) I have seen in GCJ are because some piece of code expects or doesn't expect an EWFL node. To put it simply, the current front-end wants a WFL-wrapped expression node whenever there is a need to emit a warning or an error about that expression, but not otherwise. This can easily frustrate anyone wishing to fix some of these ICEs in the hopes of making GCJ better. For example, here I am discovering that many ICEs in the Jacks testsuite are because the body of an empty block ({}) or statement is not being wrapped in an EWFL for diagnostics about unreachable statements, finding that it is trivially fixed and then discovering that doing this creates a whole mess of new ICEs on other tests, which have to be individually addressed in this manner potentially creating yet other ICEs in other places, ad nauseum. To quote Jeff Law (gcc/ChangeLog.tree-ssa), "Death to WFL nodes"!

(Originally posted on Advogato.)

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