[Sema] Improve diagnostics for attempt to throw an error *code* #3940
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@swift-ci please smoke test and merge |
Attempting to throw an error code value, e.g., throw CocoaError.fileNoSuchFileError is now ill-formed, although it was well-formed prior to the introduction of NSError bridging (SE-0112). Provide a specialized diagnostic with a Fix-It to add the appropriate parentheses: throw CocoaError(.fileNoSuchFileError) Fixes rdar://problem/27543121.
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@swift-ci please smoke test and merge |
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LGTM. |
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What's in this pull request?
As noted in the subject, this improves a diagnostic for pre-NSError-bridging code that attempts to throw an error code without constructing an actual error value.
Resolved bug number: (SR-)
Fixes rdar://problem/27543121.
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Attempting to throw an error code value, e.g.,
throw CocoaError.fileNoSuchFileError
is now ill-formed, although it was well-formed prior to the
introduction of NSError bridging (SE-0112). Provide a specialized
diagnostic with a Fix-It to add the appropriate parentheses:
throw CocoaError(.fileNoSuchFileError)
Fixes rdar://problem/27543121.