Slava Pestov dfbb580de3 AST: Store the GenericSignature in the AbstractFunctionDecl, NFC ...

For better or worse, the type of a function can end up as ErrorType,
and the generic signature was not stored anywhere else, causing
crashes from orphaned generic type parameters.

This patch is the first in a series to make this more robust by
storing the generic signature before the interface type is computed.

2015-12-14 13:29:52 -08:00

137 KiB

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