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[ConstraintSystem] Downgrade some invalid specialization uses to a warning until Swift 6 language mode

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Some invalid specializations were previously allowed by the compiler
and we found some existing code that used that (albeit invalid) syntax,
so we need to stage that error as a warning until Swift 6 language mode
to avoid source compatibility break.

Resolves: rdar://134740240
This commit is contained in:
Pavel Yaskevich
2024-08-29 00:11:01 -07:00
parent 00eee36ea7
commit 2a6cc12a63
8 changed files with 85 additions and 42 deletions
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4
include/swift/AST/DiagnosticsSema.def
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@@ -4606,8 +4606,8 @@ NOTE(duplicated_key_declared_here, none,
"duplicate key declared here", ())
// Generic specializations
ERROR(cannot_explicitly_specialize_generic_function,none,
"cannot explicitly specialize a generic function", ())
ERROR(cannot_explicitly_specialize_function,none,
"cannot explicitly specialize a%select{| generic}0 function", (bool))
ERROR(not_a_generic_type,none,
"cannot specialize non-generic type %0", (Type))
ERROR(not_a_generic_macro,none,