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Fresh install on Windows fails to compile

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

WindowsPlatform: WindowsPlatform: Windows

Status: Open.

#83066 In swiftlang/swift;

· RuiNelson opened on Jul 15, 2025

Metadata for C++ foreign reference types on Windows isn't emitted

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++

WindowsPlatform: WindowsPlatform: Windows

Status: Open.

#82643 In swiftlang/swift;

· egorzhdan opened on Jun 30, 2025

Setup and harvest secondary clang resources

build

toolchain

WindowsPlatform: WindowsPlatform: Windows

Status: Open.

Task

#81557 In swiftlang/swift;

· compnerd opened on May 16, 2025

Non-trivial C++ classes with trivial ABI are not available on Windows

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

featureA feature request or implementationA feature request or implementation

WindowsPlatform: WindowsPlatform: Windows

Status: Open.

#80202 In swiftlang/swift;

· susmonteiro opened on Mar 21, 2025

Expected<T> must be checked before access or destruction when trying to index non-existent file on Windows

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

indexingArea → source tooling: AST indexingArea → source tooling: AST indexing

WindowsPlatform: WindowsPlatform: Windows

Status: Open.

#80136 In swiftlang/swift;

· ahoppen opened on Mar 19, 2025

<code>swift repl</code> crashes immediately on Windows ARM64

arm64Architecture: arm64 (aarch64) — any 64-bit ARMArchitecture: arm64 (aarch64) — any 64-bit ARM

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

WindowsPlatform: WindowsPlatform: Windows

Status: Open.

#79981 In swiftlang/swift;

· jakepetroules opened on Mar 13, 2025

module reserialization does not load VFS mappings

AndroidPlatform: AndroidPlatform: Android

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

module maps

serializationArea → compiler: Serialization & deserializationArea → compiler: Serialization & deserialization

WindowsPlatform: WindowsPlatform: Windows

Status: Open.

#79839 In swiftlang/swift;

· compnerd opened on Mar 7, 2025

fatal error LNK1322: cannot avoid potential ARM hazard (Cortex-A53 MPCore processor bug #843419) in section 0x1

arm64Architecture: arm64 (aarch64) — any 64-bit ARMArchitecture: arm64 (aarch64) — any 64-bit ARM

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

continuous integration

unexpected errorBug: Unexpected errorBug: Unexpected error

WindowsPlatform: WindowsPlatform: Windows

Status: Open.

#79740 In swiftlang/swift;

· weliveindetail opened on Mar 3, 2025

Use loader notifications for module registration on Windows

featureA feature request or implementationA feature request or implementation

runtimeThe Swift RuntimeThe Swift Runtime

WindowsPlatform: WindowsPlatform: Windows

Status: Open.

#79268 In swiftlang/swift;

· compnerd opened on Feb 10, 2025

Running a Swift in script mode fails on Windows

script modeFlag: Specific to script mode compilationFlag: Specific to script mode compilation

WindowsPlatform: WindowsPlatform: Windows

Status: Open.

#77263 In swiftlang/swift;

· ahoppen opened on Oct 28, 2024

Toolchain fails to build with VS Community 2022

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

WindowsPlatform: WindowsPlatform: Windows

Status: Open.

#77132 In swiftlang/swift;

· dschaefer2 opened on Oct 20, 2024

swiftinterface generator confuses <code>@exclusivity(unchecked)</code> and <code>@_optimize(none)</code> on Windows

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

serializationArea → compiler: Serialization & deserializationArea → compiler: Serialization & deserialization

textual interfaces

WindowsPlatform: WindowsPlatform: Windows

Status: Open.

#76279 In swiftlang/swift;

· grynspan opened on Sep 5, 2024