3 Commits

Author	SHA1	Message	Date
Hamish Knight	b2854b28bf	[CS] Fix typealias handling in InferableTypeOpener ... For non-generic cases we can simply recurse into the underlying type, ensuring we don't crash with a null GenericSignature. For generic cases, ensure we bind outer generic parameters to their archetypes, and apply the substitutions to the original underlying type to ensure we correctly handle cases where e.g an unbound generic is passed as a generic argument to a generic typealias. rdar://160135085	2025-09-23 14:36:06 +01:00
Hamish Knight	20202f53a9	[CS] Quick workaround for rdar://160135085 ... Temporarily disable the checking requirements for typealias types, and desugar the typealias since the constraint system does not currently correctly handle type variables in the underlying type.	2025-09-23 14:36:06 +01:00
Hamish Knight	2e0be5afd7	[CS] Open generic requirements for types with unbound + placeholder types ... - Introduce a generic requirements opening function for type resolution, which is used by the constraint system in cases where we need to impose requirements on opened type variables. - Refactor `replaceInferableTypesWithTypeVars` to use this function when opening generic types that contain either placeholder or unbound generic types. Together these changes ensure that we don't drop generic requirements when an unbound generic or placeholder type is used as a generic argument.	2025-08-26 12:16:54 +01:00