Nate Chandler 6c178c7c62 [prespecialized metadata] Require same file without wmo. ...

Without whole module optimization, the metadata accessors are emitted on
a per-file basis.  The result is that if the file containing a generic
type is processed before the file containing a usage of that type that
would result in that prespecialization, the metadata accessor would have
already been emitted by the time that the usage is noted, making it
impossible for the newly created prespecialization to be returned from
the already-emitted metadata accessor.

Here, require that either whole module optimization is enabled so that
the metadata accessors are all emitted at once at the end, or else that
the usage of the prespecialization is in the same file as the type is
declared.

2020-04-03 15:37:36 -07:00

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