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Copy of noncopyable typed value

async & awaitFeature → concurrency: asynchronous function aka the async/await patternFeature → concurrency: asynchronous function aka the async/await pattern

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

concurrencyFeature: umbrella label for concurrency language featuresFeature: umbrella label for concurrency language features

noncopyable struct/enumFeature → declarations: Noncopyable value type declarationsFeature → declarations: Noncopyable value type declarations

Status: Open.

#80724 In swiftlang/swift;

· iDmitriyy opened on Apr 10, 2025

Combination of <code>~Copyable</code> + optional chaining + assignment crashes the compiler.

assignmentsFeature → expressions: assignmentsFeature → expressions: assignments

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

expressionsFeature: expressionsFeature: expressions

noncopyable struct/enumFeature → declarations: Noncopyable value type declarationsFeature → declarations: Noncopyable value type declarations

optional chainingFeature → expressions: optional chainingFeature → expressions: optional chaining

Status: Open.

#80261 In swiftlang/swift;

· YOCKOW opened on Mar 25, 2025

compiler crash: optional chaining on ~Copyable 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.

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

expressionsFeature: expressionsFeature: expressions

noncopyable struct/enumFeature → declarations: Noncopyable value type declarationsFeature → declarations: Noncopyable value type declarations

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

Status: Open.

#75999 In swiftlang/swift;

· mayoff opened on Aug 20, 2024

Use of noncopyable type in an async context can cause compiler hang

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

hangBug: Execution is not seen to haltBug: Execution is not seen to halt

noncopyable struct/enumFeature → declarations: Noncopyable value type declarationsFeature → declarations: Noncopyable value type declarations

SILOptimizerArea → compiler: SIL optimization passesArea → compiler: SIL optimization passes

Status: Open.

#75679 In swiftlang/swift;

· jamesmmadeira opened on Aug 4, 2024

Compiler failing to compile ~Copyable generic with: "Copy of noncopyable typed value." Error

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

noncopyable struct/enumFeature → declarations: Noncopyable value type declarationsFeature → declarations: Noncopyable value type declarations

ownershipFeature: Ownership modifiers and semanticsFeature: Ownership modifiers and semantics

Status: Open.

#73156 In swiftlang/swift;

· rvsrvs opened on Apr 19, 2024

nonCopyable and inout closure causing compiler error

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

noncopyable struct/enumFeature → declarations: Noncopyable value type declarationsFeature → declarations: Noncopyable value type declarations

ownershipFeature: Ownership modifiers and semanticsFeature: Ownership modifiers and semantics

Status: Open.

#73052 In swiftlang/swift;

· carlhung opened on Apr 16, 2024

usage of a noncopyable type that compiler can't verify

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

noncopyable struct/enumFeature → declarations: Noncopyable value type declarationsFeature → declarations: Noncopyable value type declarations

ownershipFeature: Ownership modifiers and semanticsFeature: Ownership modifiers and semantics

Status: Open.

#72803 In swiftlang/swift;

· LeeroyDing opened on Apr 3, 2024

Unexpected "copy of noncopyable typed value" error.

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

noncopyable struct/enumFeature → declarations: Noncopyable value type declarationsFeature → declarations: Noncopyable value type declarations

Status: Open.

#72651 In swiftlang/swift;

· oscbyspro opened on Mar 28, 2024

Non-Copyable Struct Prevents Function Specialization, Crashing in Embedded Mode

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

embeddedEmbedded SwiftEmbedded Swift

noncopyable struct/enumFeature → declarations: Noncopyable value type declarationsFeature → declarations: Noncopyable value type declarations

Status: Open.

#72627 In swiftlang/swift;

· filip-sakel opened on Mar 27, 2024

Unexpected exclusivity violation for trivial <code>~Copyable</code> struct

access exclusivityFeature: Enforcement of exclusive access to memoryFeature: Enforcement of exclusive access to memory

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

noncopyable struct/enumFeature → declarations: Noncopyable value type declarationsFeature → declarations: Noncopyable value type declarations

Status: Open.

#71045 In swiftlang/swift;

· MaxDesiatov opened on Jan 21, 2024

swift-frontend crash when pattern matching a generic consumed noncopyable enum

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

noncopyable struct/enumFeature → declarations: Noncopyable value type declarationsFeature → declarations: Noncopyable value type declarations

ownershipFeature: Ownership modifiers and semanticsFeature: Ownership modifiers and semantics

Status: Open.

#70727 In swiftlang/swift;

· adamkuipers opened on Jan 4, 2024

Non-copyable: compiler produces a copy of non-copyable value returned by pointer using 'unsafeAddress' accessor in a subscript

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

noncopyable struct/enumFeature → declarations: Noncopyable value type declarationsFeature → declarations: Noncopyable value type declarations

ownershipFeature: Ownership modifiers and semanticsFeature: Ownership modifiers and semantics

Status: Open.

#70047 In swiftlang/swift;

· hyp opened on Nov 27, 2023