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Issues list

Variadic-generic opaque return types produce malformed module interfaces bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. library evolution Feature: library evolution (umbrella feature for features that facilitate resilient libraries) opaque result types Feature → types → opaque types: opaque result types parameter packs Feature → generics: Parameter packs swift 6.1 unexpected behavior Bug: Unexpected behavior or incorrect output
#81455 opened May 12, 2025 by karwa
🌸6.1 [ClangImporter] Fix import of aliased enum cases 🍒 release cherry pick Flag: Release branch cherry picks swift 6.1
#80842 opened Apr 15, 2025 by beccadax • Draft
1
Compiler crash (regression) relating to typed throws and primary associated types async & await Feature → concurrency: asynchronous function aka the async/await pattern bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler itself concurrency Feature: umbrella label for concurrency language features crash Bug: A crash, i.e., an abnormal termination of software error handling IRGen LLVM IR generation swift 6.1 throws & rethrows Feature → error handling: throws & rethrows typed throws Feature → error handling → throws & rethrows: Typed throws
#80732 opened Apr 10, 2025 by lawrence-forooghian
@drexin
1
[6.2, 6.1 regression] Misused isolated keyword crashes the compiler. bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler itself crash Bug: A crash, i.e., an abnormal termination of software regression swift 6.1 swift 6.2 type checker Area → compiler: Semantic analysis
#80363 opened Mar 28, 2025 by YOCKOW
1
1
Error type 'any P' cannot conform to 'P' fixed by unrelated statement bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. closures Feature: closures compiler The Swift compiler itself existentials Feature: values of types like `any Collection`, `Any` and `AnyObject`; type-erased values expressions Feature: expressions generics Feature: generic declarations and types implicit existential opening Feature → existentials: implicit opening of existentials when passed to parameters of generic type swift 6.1 type checker Area → compiler: Semantic analysis
#78436 opened Jan 4, 2025 by SimplyDanny
@AnthonyLatsis
Compiler crash attempting to call a function with a pack archetype expansion parameter assertion failure Bug → crash: An assertion failure bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler itself crash Bug: A crash, i.e., an abnormal termination of software expressions Feature: expressions function types Feature → types: function types generics Feature: generic declarations and types parameter packs Feature → generics: Parameter packs swift 6.1 type checker Area → compiler: Semantic analysis types Feature: types
#78396 opened Dec 31, 2024 by hamishknight
@AnthonyLatsis
1
Crash on invalid nested call to variadic generic function bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler itself crash Bug: A crash, i.e., an abnormal termination of software expressions Feature: expressions generics Feature: generic declarations and types parameter packs Feature → generics: Parameter packs swift 6.1 type checker Area → compiler: Semantic analysis
#78156 opened Dec 13, 2024 by AnthonyLatsis
Crash when opening existential of type AnyObject bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler itself crash Bug: A crash, i.e., an abnormal termination of software existentials Feature: values of types like `any Collection`, `Any` and `AnyObject`; type-erased values expressions Feature: expressions implicit existential opening Feature → existentials: implicit opening of existentials when passed to parameters of generic type SILGen Area → compiler: The SIL generation stage swift 6.1 types Feature: types
#77847 opened Nov 26, 2024 by AdamCmiel
@AnthonyLatsis
4
Crash on illegal existential method reference containing undefined type in signature bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler itself crash Bug: A crash, i.e., an abnormal termination of software existential member accesses Feature → existentials: existential member accesses existentials Feature: values of types like `any Collection`, `Any` and `AnyObject`; type-erased values expressions Feature: expressions function references Feature: function references as in 'foo(bar:baz:)' swift 6.1 type checker Area → compiler: Semantic analysis types Feature: types
#77840 opened Nov 26, 2024 by AnthonyLatsis
1
@AnthonyLatsis
Diagnostic for static nonmutating should be improved bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler itself declarations Feature: declarations diagnostics QoI Bug: Diagnostics Quality of Implementation good first issue Good for newcomers mutating Feature → declarations → functions: Mutating functions static declarations Feature → declarations: Static declarations swift 6.1 type checker Area → compiler: Semantic analysis
#77835 opened Nov 25, 2024 by AnthonyLatsis
1
@felixinkinto
11
Confusing error on cross-module access of isolated state actor isolation Feature → concurrency: Actor isolation bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler itself concurrency Feature: umbrella label for concurrency language features diagnostics QoI Bug: Diagnostics Quality of Implementation multiple modules Flag: An issue whose reproduction requires multiple modules swift 6.1 type checker Area → compiler: Semantic analysis
#76909 opened Oct 8, 2024 by AnthonyLatsis
5
It’s possible to write arbitrary text after specifying the @MainActor for a closure. accepts invalid Bug: Accepts invalid actor isolation Feature → concurrency: Actor isolation attributes Feature: Declaration and type attributes bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler itself concurrency Feature: umbrella label for concurrency language features swift 6.1 type checker Area → compiler: Semantic analysis
#76540 opened Sep 18, 2024 by omochi
1
Crash on unnamed property wrapped function parameter bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler itself crash Bug: A crash, i.e., an abnormal termination of software function parameters Feature → declarations: function parameters property wrappers Feature: property wrappers SILGen Area → compiler: The SIL generation stage swift 6.1
#76308 opened Sep 6, 2024 by AnthonyLatsis
Compiler crash with parameter pack in subscript bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler itself crash Bug: A crash, i.e., an abnormal termination of software expressions Feature: expressions generics Feature: generic declarations and types parameter packs Feature → generics: Parameter packs SILGen Area → compiler: The SIL generation stage subscript Feature: Subscript declarations swift 6.1
#75735 opened Aug 6, 2024 by xAlien95
Embedded Swift: Cannot convert String to Int bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. embedded Embedded Swift standard library Area: Standard library umbrella swift 6.1 unexpected error Bug: Unexpected error
#75730 opened Aug 6, 2024 by michael-jan
2
Embedded Swift compiler emits explicit loop instead of memmove() bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler itself embedded Embedded Swift performance SILOptimizer Area → compiler: SIL optimization passes swift 6.1 unexpected behavior Bug: Unexpected behavior or incorrect output
#75729 opened Aug 6, 2024 by michael-jan
@kubamracek @eeckstein
1
Source compat project 'vapor_websocket-kit' fails on a compilation error bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler itself expressions Feature: expressions source compatibility suite Flag: An issue that surfaced in the source compatibility suite swift 6.1 type checker Area → compiler: Semantic analysis unexpected error Bug: Unexpected error
#75656 opened Aug 2, 2024 by xymus
2
Source compat project 'vapor_sql-kit' fails on a compilation error bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler itself existentials Feature: values of types like `any Collection`, `Any` and `AnyObject`; type-erased values not a bug Resolution → not a bug: Reported as a bug but turned out to be expected behavior or programmer error source compatibility suite Flag: An issue that surfaced in the source compatibility suite swift 6.1 transfer candidate The issue may belong in another repository type checker Area → compiler: Semantic analysis unexpected error Bug: Unexpected error
#75655 opened Aug 2, 2024 by xymus
4
Same-element requirements are not yet supported bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler itself generic constraints Feature → generics: generic constraints generics Feature: generic declarations and types parameter packs Feature → generics: Parameter packs swift 6.1 type checker Area → compiler: Semantic analysis unexpected error Bug: Unexpected error
#74979 opened Jul 5, 2024 by rayx
1
Typo of any vs Any resulted in an unhelpful error message compiler The Swift compiler itself diagnostics QoI Bug: Diagnostics Quality of Implementation existentials Feature: values of types like `any Collection`, `Any` and `AnyObject`; type-erased values improvement parser Area → compiler: The legacy C++ parser swift 6.1 types Feature: types
#73928 opened May 27, 2024 by mattmassicotte
@GunjanRawat26
4
REPL scrubs important environment variables bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. REPL swift 6.0 swift 6.1 Windows Platform: Windows
#70005 opened Nov 22, 2023 by compnerd
Compiler crash doing weird things with primary associated types assertion failure Bug → crash: An assertion failure bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler itself crash Bug: A crash, i.e., an abnormal termination of software existentials Feature: values of types like `any Collection`, `Any` and `AnyObject`; type-erased values expressions Feature: expressions generic constraints Feature → generics: generic constraints generics Feature: generic declarations and types implicit existential opening Feature → existentials: implicit opening of existentials when passed to parameters of generic type swift 6.1 type checker Area → compiler: Semantic analysis types Feature: types
#61934 opened Nov 4, 2022 by tominsam
1
@slavapestov @AnthonyLatsis
1
Disallow implicit existential opening when calling function with an opaque result type assertion failure Bug → crash: An assertion failure bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler itself crash Bug: A crash, i.e., an abnormal termination of software existentials Feature: values of types like `any Collection`, `Any` and `AnyObject`; type-erased values expressions Feature: expressions generics Feature: generic declarations and types implicit existential opening Feature → existentials: implicit opening of existentials when passed to parameters of generic type opaque result types Feature → types → opaque types: opaque result types opaque types Feature → types: opaque types swift 6.1 type checker Area → compiler: Semantic analysis types Feature: types
#59840 opened Jul 1, 2022 by karwa
@slavapestov @DougGregor @AnthonyLatsis
4
[SR-14399] Compiler crash with Self as closure parameter bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler itself crash Bug: A crash, i.e., an abnormal termination of software Self in class Feature → types: The 'Self' type in classes SILGen Area → compiler: The SIL generation stage swift 6.1 type checker Area → compiler: Semantic analysis
#56757 opened Mar 24, 2021 by theblixguy
@AnthonyLatsis
9
[SR-10931] Optional initialization inconsistent between Optional<T> vs T? bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler itself default initialization Feature: Default initialization of variables Optional Area → standard library: The `Optional` type swift 6.1 type checker Area → compiler: Semantic analysis unexpected error Bug: Unexpected error
#53322 opened Jun 14, 2019 by masters3d
2
ProTip! Exclude everything labeled bug with -label:bug.