Allan Shortlidge 8a0f76861d AST: Add the UselessConditionalStatement warning group. ...

Allow developers to control the behavior of warnings like this:

```
let x = 0
if case _ = x { // warning: 'if' condition is always true
  // ...
}
```

Resolves rdar://178154296.

2026-05-28 16:45:53 -07:00

..

.gitignore

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actor-isolated-call.md

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actor-isolated-mutating-async.md

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add-preconcurrency-import.md

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always-available-domain.md

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availability-unrecognized-name.md

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clang-declaration-import.md

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compilation-caching.md

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conformance-isolation.md

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conversion-from-isolated-any-to-synchronous.md

Sema: Add diagnostic group for @isolated(any) to synchronous conversion.

2026-05-22 14:39:52 -07:00

deprecated-declaration.md

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diagnostic-groups.md

AST: Add the UselessConditionalStatement warning group.

2026-05-28 16:45:53 -07:00

diagnostics.md

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dynamic-callable-requirements.md

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dynamic-exclusivity.md

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embedded-restrictions.md

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error-in-future-swift-version.md

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exclusivity-violation.md

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existential-any.md

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existential-member-access-limitations.md

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existential-type.md

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explicit-sendable-annotations.md

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foreign-reference-type.md

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implementation-only-deprecated.md

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implicit-strong-capture.md

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inconsistent-import-access.md

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isolated-conformances.md

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member-import-visibility.md

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missing-module-on-known-paths.md

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module-not-testable.md

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module-self-import.md

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module-version-missing.md

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multiple-inheritance.md

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mutable-global-variable.md

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no-usage.md

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no-use-throwing-unstructured-task.md

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nominal-types.md

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nonisolated-nonsending-by-default.md

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old-suppressed-associatedtypes.md

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opaque-type-inference.md

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option-obsoleted-by-module-selectors.md

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oslog.md

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performance-hints.md

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preconcurrency-import.md

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property-wrapper-requirements.md

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protocol-type-non-conformance.md

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region-isolation-cross-isolation-data-race.md

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region-isolation-unknown-pattern.md

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result-builder-methods.md

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return-type-implicit-copy.md

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semantic-copies.md

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sendable-closure-captures.md

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sendable-metatypes.md

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sending-closure-risks-data-race.md

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sending-risks-data-race.md

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spi-import-ignored.md

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strict-language-features.md

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strict-memory-safety.md

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string-interpolation-conformance.md

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temporary-pointers.md

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trailing-closure-matching.md

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unavailable-sendable-conformance.md

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unknown-warning-group.md

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unnecessary-effect-marker.md

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unsupported-scoped-import.md

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untyped-throws.md

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unused-import-access.md

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upcoming-language-features.md

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use-any-apple-os-availability.md

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useless-availability-check.md

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useless-conditional-statement.md

AST: Add the UselessConditionalStatement warning group.

2026-05-28 16:45:53 -07:00