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Compiler abort on SILFunctionTransform "SendNonSendable" for Swift Testing exit tests

bugA deviation from expected or documented behavior. Also: expected but undesirable behavior.A deviation from expected or documented behavior. Also: expected but undesirable behavior.

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.

#85329 In swiftlang/swift;

· Androp0v opened on Nov 5, 2025

Losing MainActor isolation

bugA deviation from expected or documented behavior. Also: expected but undesirable behavior.A deviation from expected or documented behavior. Also: expected but undesirable behavior.

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

Status: Open.

#85328 In swiftlang/swift;

· RoBo-Inc opened on Nov 5, 2025

ca-certificates check is broken on OpenSUSE Tumbleweed

bugA deviation from expected or documented behavior. Also: expected but undesirable behavior.A deviation from expected or documented behavior. Also: expected but undesirable behavior.

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

Status: Open.

#85327 In swiftlang/swift;

· thesupertechie opened on Nov 5, 2025

Crash when compiling isolated deinit of generic class with -O

bugA deviation from expected or documented behavior. Also: expected but undesirable behavior.A deviation from expected or documented behavior. Also: expected but undesirable behavior.

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.

#85308 In swiftlang/swift;

· PerttiKOura opened on Nov 4, 2025

NSCoding constraint of imported objc lightweight generic crashing in generic context

bugA deviation from expected or documented behavior. Also: expected but undesirable behavior.A deviation from expected or documented behavior. Also: expected but undesirable behavior.

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.

#85303 In swiftlang/swift;

· AdamCmiel opened on Nov 4, 2025

Cannot make a struct called Foundation in iOS project

bugA deviation from expected or documented behavior. Also: expected but undesirable behavior.A deviation from expected or documented behavior. Also: expected but undesirable behavior.

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

Status: Open.

#85300 In swiftlang/swift;

· mattneub opened on Nov 3, 2025

~Copyable/~Escapable crash and inconsistent error based on whether class is final or not

bugA deviation from expected or documented behavior. Also: expected but undesirable behavior.A deviation from expected or documented behavior. Also: expected but undesirable behavior.

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

ownershipFeature: Ownership modifiers and semanticsFeature: Ownership modifiers and semantics

SIL ownershipArea → compiler → SIL: SIL ownershipArea → compiler → SIL: SIL ownership

Status: Open.

#85275 In swiftlang/swift;

· ValentinWalter opened on Nov 3, 2025

[release/6.2.1] TEST 'Swift(wasi-wasm32) :: embedded/wasm/wasilibc_functions.swift' FAILED

continuous integration

LinuxPlatform: LinuxPlatform: Linux

swift 6.2

test suiteArea: test suiteArea: test suite

WASIWebAssembly System Interface supportWebAssembly System Interface support

Status: Open.

#85272 In swiftlang/swift;

· shahmishal opened on Nov 2, 2025

Local function forward reference of <code>lazy</code> var crashes in SILGen

assertion failureBug → crash: An assertion failureBug → crash: An assertion failure

bugA deviation from expected or documented behavior. Also: expected but undesirable behavior.A deviation from expected or documented behavior. Also: expected but undesirable behavior.

compilerThe Swift compiler itselfThe Swift compiler itself

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

SILGenArea → compiler: The SIL generation stageArea → compiler: The SIL generation stage

value capturingFeature: Value capturing by closures and local functionsFeature: Value capturing by closures and local functions

Status: Open.

#85266 In swiftlang/swift;

· hamishknight opened on Nov 1, 2025

Fix calling convention support in Swift (breaks 32-bit Windows API calls).

bugA deviation from expected or documented behavior. Also: expected but undesirable behavior.A deviation from expected or documented behavior. Also: expected but undesirable behavior.

clang importerArea → compiler: The clang importerArea → compiler: The clang importer

IRGenLLVM IR generationLLVM IR generation

Status: Open.

Bug

#85263 In swiftlang/swift;

· al45tair opened on Nov 1, 2025

docs: Add concrete bundle prefix example to build-toolchain in README

Status: Open.

#85258 In swiftlang/swift;

· joshuacleetus opened on Oct 31, 2025

Nighty Windows toolchain is not usable

bugA deviation from expected or documented behavior. Also: expected but undesirable behavior.A deviation from expected or documented behavior. Also: expected but undesirable behavior.

regression

toolchain

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

WindowsPlatform: WindowsPlatform: Windows

Status: Open.

#85252 In swiftlang/swift;

· bkhouri opened on Oct 31, 2025