Mike Ash 216e555ad6 [Runtime] Mark swift_asprintf with __attribute__((__format__)) ...

This gives us build-time warnings about format string mistakes, like we would get if we called the built-in asprintf directly.

Make TypeLookupError's format string constructor a macro instead so that its callers can get these build-time warnings.

This reveals various mistakes in format strings and arguments in the runtime, which are now fixed.

rdar://73417805

2021-01-22 10:54:45 -05:00

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