[Diagnostics] Handle ambiguities related to use of nil literal
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hborla
approved these changes
May 3, 2021
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… its argument node
…rgument position New note mentions both expected argument type and its position and anchors to the affected overload choice.
When `nil` is passed as an argument to call with multiple overloads it's possible that this would result in ambiguity where matched expected argument type doesn't conform to `ExpressibleByNilLiteral`. To handle situations like this locator for contextual mismatch has to be adjusted to point to the call where `nil` is used, so `diagnoseAmbiguityWithFixes` can identify multiple overloads and produce a correct ambiguity diagnostic. Resolves: rdar://75514153
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When
nilis passed as an argument to call with multiple overloadsit's possible that this would result in ambiguity where matched
expected argument type doesn't conform to
ExpressibleByNilLiteral.To handle situations like this locator for contextual mismatch
has to be adjusted to point to the call where
nilis used, sodiagnoseAmbiguityWithFixescan identify multiple overloads andproduce a correct ambiguity diagnostic.
Resolves: rdar://75514153