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Failed to produce diagnostic for invalid metatype to existential metatype conversion

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

diagnostics QoIBug: Diagnostics Quality of ImplementationBug: Diagnostics Quality of Implementation

type checkerArea → compiler: Semantic analysisArea → compiler: Semantic analysis

Status: Open.

#83991 In swiftlang/swift;

· hamishknight opened on Aug 28, 2025

Compiler crashes when supplying a pack iteration mapping to a mutable var as a closure argument

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.

#83983 In swiftlang/swift;

· reidcallan opened on Aug 28, 2025

Failed to produce diagnostic for <code>associatedtype</code> reference on existential base

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

diagnostics QoIBug: Diagnostics Quality of ImplementationBug: Diagnostics Quality of Implementation

type checkerArea → compiler: Semantic analysisArea → compiler: Semantic analysis

Status: Open.

#83975 In swiftlang/swift;

· hamishknight opened on Aug 28, 2025

macOS segfaults: allow disabling Runtime os_logger at runtime

featureA feature request or implementationA feature request or implementation

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

Status: Open.

#83972 In swiftlang/swift;

· ephemer opened on Aug 28, 2025

Assertion failure when importing C++ struct defined within an overloaded operator

c++ interopFeature: Interoperability with C++Feature: Interoperability with C++

compilerThe Swift compiler itselfThe Swift compiler itself

Status: Open.

Bug

#83942 In swiftlang/swift;

· egorzhdan opened on Aug 27, 2025

Update the runtime versions in CMake files to use the central version

build-scriptArea → utils: The build scriptArea → utils: The build script

task

Status: Open.

#83936 In swiftlang/swift;

· shahmishal opened on Aug 27, 2025

Dynamic memory exclusivity violations reported when using <code>-O</code> but not <code>-Onone</code>

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.

#83924 In swiftlang/swift;

· jamieQ opened on Aug 26, 2025

SIL verifier crashes beyond SILGen when protocol uses Self in variable type

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.

Bug

#83919 In swiftlang/swift;

· drodriguez opened on Aug 26, 2025

Enable LTO/LTCG for toolchain builds

Status: Open.

#83918 In swiftlang/swift;

· compnerd opened on Aug 26, 2025

Enable LLVMCAS on Windows

Status: Open.

#83917 In swiftlang/swift;

· compnerd opened on Aug 26, 2025

Glibc import fails to cross-compile with Swift SDK when .Cxx interop is enabled

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

c++ interopFeature: Interoperability with C++Feature: Interoperability with C++

LinuxPlatform: LinuxPlatform: Linux

swift 6.2

swift 6.3

Status: Open.

#83915 In swiftlang/swift;

· xtremekforever opened on Aug 26, 2025

Failed to produce diagnostic for expression; please submit a bug report (https://swift.org/contributing/#reporting-bugs)

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.

#83911 In swiftlang/swift;

· BrinitTestApp opened on Aug 26, 2025