Sema: Fix substitutions of generic caller-side default arguments [5.1] #27839
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Using mapTypeIntoContext() is incorrect here, because we might not be calling the default argument from the callee's context. Instead, use the substitutions from the ConcreteDeclRef. Fixes <rdar://problem/55739617>.
slavapestov
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@swift-ci Please test |
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@DougGregor Please take a look. |
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Using mapTypeIntoContext() is incorrect here, because we might not
be calling the default argument from the callee's context. Instead,
use the substitutions from the ConcreteDeclRef.
Fixes rdar://problem/55739617.