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Compiler crash when explicitly annotating variable with type (some P).T

crashBug: A crash, i.e., an abnormal termination of softwareBug: A crash, i.e., an abnormal termination of software

triage neededThis issue needs more specific labelsThis issue needs more specific labels

Status: Open.

Bug

#87039 In swiftlang/swift;

· llksz opened on Feb 6, 2026

Seems the Swift compiler is crashing because it doesn't like my usage of typed throws? Maybe?

crashBug: A crash, i.e., an abnormal termination of softwareBug: A crash, i.e., an abnormal termination of software

triage neededThis issue needs more specific labelsThis issue needs more specific labels

Status: Open.

Bug

#87036 In swiftlang/swift;

· KyNorthstar opened on Feb 6, 2026

crashed occurred on jammy in a GitHub action

crashBug: A crash, i.e., an abnormal termination of softwareBug: A crash, i.e., an abnormal termination of software

triage neededThis issue needs more specific labelsThis issue needs more specific labels

Status: Open.

Bug

#87033 In swiftlang/swift;

· bkhouri opened on Feb 6, 2026

IRGen crash: closure with typed throws using nested Error in generic type

Status: Open.

#87030 In swiftlang/swift;

· coenttb opened on Feb 6, 2026

SIL verifier crash: _read yielding ~Escapable value with @_lifetime(borrow)

Status: Open.

#87029 In swiftlang/swift;

· coenttb opened on Feb 6, 2026

Use-after-free in EnumeratedSequence.map() if EnumeratedSequence holds reference to CxxSequence

crashBug: A crash, i.e., an abnormal termination of softwareBug: A crash, i.e., an abnormal termination of software

triage neededThis issue needs more specific labelsThis issue needs more specific labels

Status: Open.

Bug

#87025 In swiftlang/swift;

· alexkad0 opened on Feb 6, 2026

Integer generic parameters don't compile for negative value

triage neededThis issue needs more specific labelsThis issue needs more specific labels

Status: Open.

Bug

#87007 In swiftlang/swift;

· JaapWijnen opened on Feb 5, 2026

[AutoDiff] Lacking diagnostics for invalid custom derivative having incompatible throwing error type

accepts invalidBug: Accepts invalidBug: Accepts invalid

AutoDiff

crashBug: A crash, i.e., an abnormal termination of softwareBug: A crash, i.e., an abnormal termination of software

Status: Open.

Bug

#86998 In swiftlang/swift;

· asl opened on Feb 5, 2026

Diagnostic controls don't seem to work as expected for linked diagnostic groups

triage neededThis issue needs more specific labelsThis issue needs more specific labels

Status: Open.

Bug

#86978 In swiftlang/swift;

· jamieQ opened on Feb 4, 2026

Conformance to nonisolated protocol with all requirements being isolated is incorrectly inferred as isolated.

triage neededThis issue needs more specific labelsThis issue needs more specific labels

Status: Open.

Bug

#86976 In swiftlang/swift;

· nickolas-pohilets opened on Feb 4, 2026

Support direct retain/release on Windows

triage neededThis issue needs more specific labelsThis issue needs more specific labels

Status: Open.

Task

#86965 In swiftlang/swift;

· compnerd opened on Feb 3, 2026

[windows] Building the toolchain with <code>-DebugInfo</code> takes up to 64GB of RAM

WindowsPlatform: WindowsPlatform: Windows

Status: Open.

#86961 In swiftlang/swift;

· charles-zablit opened on Feb 3, 2026