Sofia 2025

June 2025 plenary · adopted into C++26
45papers adopted
28features touched
← Hagenberg 2025Kona 2025 →

Reflection

6 papers
P2996R13Reflection for C++26C++26P3096R12Function Parameter Reflection in Reflection for C++26C++26P3293R3Splicing a base class subobjectC++26P3394R4Annotations for ReflectionC++26P3491R3define_static_{string,object,array}C++26P3560R2Error Handling in ReflectionC++26

std::execution (senders/receivers)

6 papers
P3284R4write_env and unstoppable Sender AdaptorsC++26P3433R1Allocator Support for Operation StatesC++26P3481R5std::execution::bulk() issuesC++26P3557R3High-Quality Sender Diagnostics with Constexpr ExceptionsC++26P3570R2optional variants in sender/receiverC++26P3682R0Remove std::execution::splitC++26

std::simd

4 papers
P2664R11Extend std::simd with permutation APIC++26P2876R3Proposal to extend std::simd with more constructors and accessorsC++26P3480R6std::simd is a rangeC++26P3691R1Reconsider naming of the namespace for "std::simd"C++26

Atomics & memory model

2 papers
P3008R6Atomic floating-point min/maxC++26P3111R8Atomic Reduction OperationsC++26

Core & Library issue resolutions

2 papers
P3742R0C++ Standard Library Issues to be moved in Sofia, Jun. 2025C++26P3752R0Core Language Working Group "ready" Issues for the June, 2025 meetingC++26

Exceptions & exception_ptr

2 papers
P2927R3Inspecting exception_ptrC++26P3748R0Inspecting exception_ptr should be constexprC++26

Parallel range algorithms

2 papers
P3179R9Parallel Range AlgorithmsC++26P3709R2Reconsider parallel ranges::rotate_copy and ranges::reverse_copyC++26

#embed & preprocessor (C++26/29)

1 paper
P2843R3Preprocessing is never undefinedC++26

async_scope

1 paper
P3149R11async_scope - Creating scopes for non-sequential concurrencyC++26

C compatibility

1 paper
P3348R4C++26 should refer to C23 not C17C++26

Concurrency utilities

1 paper
P3503R3Make type-erased allocator use in promise and packaged_task consistentC++26

Constant evaluation (C++26)

1 paper
P3533R2constexpr virtual inheritanceC++26

constant_wrapper & nontype

1 paper
P2781R9std::constant_wrapperC++26

Coroutine task type

1 paper
P3552R3Add a Coroutine Task TypeC++26

Erroneous behaviour & observable checkpoints

1 paper
P3641R0Rename std::observable to std::observable_checkpoint, and add a feature-test macroC++26

Expansion statements

1 paper
P1306R5Expansion StatementsC++26

Formatting improvements (C++26/29)

1 paper
P2319R5Prevent path presentation problemsC++26

iostreams & file streams

1 paper
P3223R2Making std::istream::ignore less surprisingC++26

Library constexpr-ification (C++26)

1 paper
P3037R6constexpr std::shared_ptr and friendsC++26

mdspan

1 paper
P3383R3mdspan.at()C++26

Modules fixes

1 paper
P3618R0Allow attaching main to the global moduleC++26

Parallel scheduler

1 paper
P2079R10Parallel schedulerC++26

Ranges (C++26)

1 paper
P3060R3Add std::views::indices(n)C++26

Standard library hardening

1 paper
P3697R1Minor additions to C++26 standard library hardeningC++26

std::optional

1 paper
P2988R12std::optionalC++26

Strings & string_view

1 paper
P3044R2sub-string_view from stringC++26

tuple, pair & variant

1 paper
P1317R2Remove return type deduction in std::applyC++26

type_order

1 paper
P2830R10Standardized Constexpr Type OrderingC++26