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Merge pull request #69950 from slavapestov/clean-up-open-existentials

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Cleanups and fixes for opened existentials
This commit is contained in:
Slava Pestov
2023-11-28 10:45:19 -05:00
committed by GitHub
parent 8167476613 6fb5b94675
commit f89b9817e7
15 changed files with 285 additions and 684 deletions
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13
lib/Sema/CSSimplify.cpp
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@@ -13014,19 +13014,6 @@ ConstraintSystem::SolutionKind ConstraintSystem::simplifyApplicableFnConstraint(
result2, opened.second->getExistentialType(), opened.first,
TypePosition::Covariant);
}
// If result type has any erased existential types it requires explicit
// `as` coercion.
if (AddExplicitExistentialCoercion::isRequired(
*this, func2->getResult(), openedExistentials, locator)) {
if (!shouldAttemptFixes())
return SolutionKind::Error;
if (recordFix(AddExplicitExistentialCoercion::create(
*this, result2, getConstraintLocator(locator))))
return SolutionKind::Error;
}
}
// The result types are equivalent.