The 2019-03 mailing of new standards papers is now available.
| N4823 | Cologne 2019 LEWG Summary | Titus Winters | 2019-07-25 | 2019-08 | WG21 | ||
| N4824 | Business plan and convener's report | Herb Sutter | 2019-07-29 | 2019-08 | WG21 | ||
| N4825 | 2020 Varna Meeting Information | Vassil Vassilev, Mark Zeren, Vassil Keremidchiev, Anton Stoyanov | 2019-08-09 | 2019-08 | WG21 | ||
| N4826 | WG21 2019-07 Cologne Minutes of Meeting | Nina Dinka Ranns | 2019-08-09 | 2019-08 | WG21 | ||
| N4829 | Editors' Report - Programming Languages - C++ | Richard Smith | 2019-08-15 | 2019-08 | WG21 | ||
| N4830 | Committee Draft, Standard for Programming Language C++ | Richard Smith | 2019-08-15 | 2019-08 | N4820 | WG21 | |
| P0323R9 | std::expected | JF Bastien, Vicente Botet | 2019-08-03 | 2019-08 | P0323R8 | Library | |
| P0325R4 | to_array from LFTS with updates | Zhihao Yuan | 2019-07-29 | 2019-08 | P0325R3 | Library | Adopted 2019-07 |
| P0330R5 | Literal Suffixes for ptrdiff_t and size_t | JeanHeyd Meneide, Rein Halbersma | 2019-07-24 | 2019-08 | P0330R4 | Core | |
| P0350R3 | Integrating simd with parallel algorithms | Matthias Kretz | 2019-07-23 | 2019-08 | P0350R2 | Library Evolution | |
| P0388R4 | Permit conversions to arrays of unknown bound | Robert Haberlach, Richard Smith | 2019-07-18 | 2019-08 | P0388R3 | Core | Adopted 2019-07 |
| P0408R7 | Efficient Access to basic_stringbuf’s Buffer | Peter Sommerlad | 2019-07-18 | 2019-08 | P0408R6 | Library Evolution, Library | Adopted 2019-07 |
| P0466R5 | Layout-compatibility and Pointer-interconvertibility Traits | Lisa Lippincott | 2019-07-26 | 2019-08 | P0466R4 | Core, Library | Adopted 2019-07 |
| P0592R2 | To boldly suggest an overall plan for C++23 | Ville Voutilainen | 2019-08-04 | 2019-08 | P0592R1 | Evolution, Library Evolution | |
| P0631R8 | Math Constants | Lev Minkovsky, John McFarlane | 2019-07-28 | 2019-08 | P0631R7 | Library | Adopted 2019-07 |
| P0645R10 | Text Formatting | Victor Zverovich | 2019-07-18 | 2019-08 | P0645R9 | Library | Adopted 2019-07 |
| P0660R10 | Stop Token and Joining Thread | Nicolai Josuttis, Lewis Baker, Billy O'Neal, Herb Sutter, Anthony Williams | 2019-07-21 | 2019-08 | P0660R9 | Library | Adopted 2019-07 |
| P0709R4 | Zero-overhead deterministic exceptions: Throwing values | Herb Sutter | 2019-08-04 | 2019-08 | P0709R3 | Evolution, Library Evolution | |
| P0784R7 | More constexpr containers | Daveed Vandevoorde, Peter Dimov,Louis Dionne, Nina Ranns, Richard Smith, Daveed Vandevoorde | 2019-07-22 | 2019-08 | P0784R6 | Core, Library | Adopted 2019-07 |
| P0848R3 | Conditionally Trivial Special Member Functions | Barry Revzin, Casey Carter | 2019-07-28 | 2019-08 | P0848R2 | Core | Adopted 2019-07 |
| P0876R8 | fiber_context - fibers without scheduler | Oliver Kowalke, Nat Goodspeed | 2019-08-05 | 2019-08 | P0876R7 | SG1 | |
| P0943R4 | Support C atomics in C++ | Hans Boehm | 2019-08-05 | 2019-08 | P0943R3 | Library | |
| P0980R1 | Making std::string constexpr | Louis Dionne | 2019-07-19 | 2019-08 | P0980R0 | Library Evolution | Adopted 2019-07 |
| P1000R2 | C++ IS schedule | Herb Sutter | 2019-07-29 | 2019-08 | P1000R1 | WG21 | |
| P1004R2 | Making std::vector constexpr | Louis Dionne | 2019-07-19 | 2019-08 | P1004R1 | Library | Adopted 2019-07 |
| P1018R4 | Evolution status after Cologne 2019 | Ville Voutilainen | 2019-08-04 | 2019-08 | P1018R3 | WG21 | |
| P1021R5 | Filling holes in Class Template Argument Deduction | Mike Spertus, Timur Doumler, Richard Smith | 2019-08-04 | 2019-08 | P1021R4 | Core | |
| P1035R7 | Input Range Adaptors | Christopher Di Bella, Casey Carter, Corentin Jabot | 2019-08-02 | 2019-08 | P1035R6 | Library | Adopted 2019-07 |
| P1065R2 | constexpr INVOKE | Barry Revzin, Tomasz Kaminski | 2019-07-28 | 2019-08 | P1065R1 | Library | Adopted 2019-07 |
| P1099R5 | Using Enum | Gašper Ažman, Jonathan Mueller | 2019-07-20 | 2019-08 | P1099R4 | WG21 | Adopted 2019-07 |
| P1112R2 | Language support for class layout control | Pal Balog | 2019-08-04 | 2019-08 | P1112R1 | SG7, EWGI, Evolution | |
| P1132R5 | out_ptr - a scalable output pointer abstraction | JeanHeyd Meneide, Todor Buyukliev, Isabella Muerte | 2019-08-05 | 2019-08 | P1132R4 | Library | |
| P1135R6 | The C++20 Synchronization Library | David Olsen, Olivier Giroux, JF Bastien, Detlef Vollmann, Bryce Lelbach | 2019-07-20 | 2019-08 | P1135R5 | WG21 | Adopted 2019-07 |
| P1143R2 | Adding the constinit keyword | Eric Fiselier | 2019-07-18 | 2019-08 | P1143R1 | Evolution, Core | Adopted 2019-07 |
| P1152R4 | Deprecating volatile | JF Bastien | 2019-07-22 | 2019-08 | P1152R3 | Core | Adopted 2019-07 |
| P1186R3 | When do you actually use <=>? | Barry Revzin | 2019-07-28 | 2019-08 | P1186R2 | Core | Adopted 2019-07 |
| P1207R3 | Movability of Single-pass Iterators | Corentin Jabot | 2019-08-02 | 2019-08 | P1207R2 | Library | |
| P1207R4 | Movability of Single-pass Iterators | Corentin Jabot | 2019-07-19 | 2019-08 | P1207R3 | Library | Adopted 2019-07 |
| P1208R6 | Adopt source location from Library Fundamentals V3 for C++20 | Corentin Jabot, Robert Douglas, Daniel Krugler, Peter Sommerlad | 2019-08-02 | 2019-08 | P1208R5 | Library | Adopted 2019-07 |
| P1301R4 | [[nodiscard("should have a reason")]] | JeanHeyd Meneide, Isabella Muerte | 2019-08-05 | 2019-08 | P1301R3 | WG21 | Adopted 2019-07 |
| P1315R3 | secure_clear | Miguel Ojeda | 2019-08-05 | 2019-08 | P1315R2 | SG1 | |
| P1331R2 | Permitting trivial default initialization in constexpr contexts | CJ Johnson | 2019-07-26 | 2019-08 | P1331R1 | Core | Adopted 2019-07 |
| P1361R2 | Integration of chrono with text formatting | Victor Zverovich, Daniela Engert, Howard E. Hinnant | 2019-07-19 | 2019-08 | P1361R1 | Library | Adopted 2019-07 |
| P1375R2 | More Constrained: Apples or Oranges? | Hubert Tong | 2019-08-03 | 2019-08 | P1375R1 | WG21 | |
| P1391R3 | Range constructor for std::string_view | Corentin Jabot | 2019-08-02 | 2019-08 | P1391R2 | Library Evolution, Library | |
| P1394R3 | Range constructor for std::span | Corentin Jabot, Casey Carter | 2019-08-02 | 2019-08 | P1394R2 | Library | |
| P1413R2 | Deprecate std::aligned_storage and std::aligned_union | CJ Johnson | 2019-07-26 | 2019-08 | P1413R1 | Library Evolution, Library | |
| P1423R3 | char8_t backward compatibility remediation | Tom Honermann | 2019-07-20 | 2019-08 | P1423R2 | WG21 | Adopted 2019-07 |
| P1429R3 | Contracts That Work | Joshua Berne, John Lakos | 2019-07-23 | 2019-08 | P1429R2 | Evolution | |
| P1452R2 | On the non-uniform semantics of return-type-requirements | Hubert Tong | 2019-07-18 | 2019-08 | P1452R1 | Core, Library | Adopted 2019-07 |
| P1466R3 | Miscellaneous minor fixes for chrono | Howard E. Hinnant | 2019-07-17 | 2019-08 | P1466R2 | Library | Adopted 2019-07 |
| P1474R1 | Helpful pointers for ContiguousIterator | Casey Carter | 2019-07-22 | 2019-08 | P1474R0 | WG21 | Adopted 2019-07 |
| P1478R2 | Byte-wise atomic memcpy | Hans Boehm | 2019-08-05 | 2019-08 | P1478R1 | SG1 | |
| P1502R1 | Standard library header units for C++20 | Richard Smith | 2019-08-15 | 2019-08 | P1502R0 | Library | Adopted 2019-07 |
| P1510R0 | Core Language Working Group "tentatively ready" Issues for the July, 2019 (Cologne) meeting | William M. Miller | 2019-07-19 | 2019-08 | WG21 | Adopted 2019-07 | |
| P1522R1 | Iterator Difference Type and Integer Overflow | Eric Niebler | 2019-07-28 | 2019-08 | P1522R0 | Library Evolution, Library | Adopted 2019-07 |
| P1523R1 | Views and Size Types | Eric Niebler | 2019-07-28 | 2019-08 | P1523R0 | Library Evolution, Library | Adopted 2019-07 |
| P1607R1 | Minimizing Contracts | Joshua Berne, Jeff Snyder, Ryan McDougall | 2019-07-23 | 2019-08 | P1607R0 | Evolution | |
| P1612R1 | Relocate Endian's Specification | Arthur O'Dwyer | 2019-07-20 | 2019-08 | P1612R0 | Library | Adopted 2019-07 |
| P1614R2 | The Mothership Has Landed: Adding <=> to the Library | Barry Revzin | 2019-07-28 | 2019-08 | P1614R1 | Library | Adopted 2019-07 |
| P1616R1 | Using unconstrained template template parameters with constrained templates | Mike Spertus, Roland Bock | 2019-07-28 | 2019-08 | P1616R0 | Core | Adopted 2019-07 |
| P1624R1 | Resolving technical issues in parameter mapping equivalence and related problems | Hubert Tong | 2019-08-05 | 2019-08 | P1624R0 | Core | |
| P1630R1 | Spaceship needs a tune-up | Barry Revzin | 2019-07-17 | 2019-08 | P1630R0 | Evolution, Core | Adopted 2019-07 |
| P1631R0 | Object detachment and attachment | Niall Douglas, Bob Steagall | 2019-07-11 | 2019-08 | SG1, SG12, SG14 | ||
| P1633R1 | Amendments to the C++20 Synchronization Library | David Olsen, Olivier Giroux | 2019-07-19 | 2019-08 | P1633R0 | SG1 | |
| P1636R1 | Formatters for library types | Lars Gullik Bjønnes | 2019-08-02 | 2019-08 | P1636R0 | Library Evolution, Library | |
| P1638R1 | basic_istream_view's iterator should not be copyable | Corentin Jabot, Christopher Di Bella | 2019-08-02 | 2019-08 | P1638R0 | SG16, Library Evolution, Library | Adopted 2019-07 |
| P1643R1 | Add wait/notify to atomic_ref | David Olsen | 2019-07-20 | 2019-08 | P1643R0 | WG21 | Adopted 2019-07 |
| P1648R1 | The Concept of Extending Argument and a Support Library | Mingxin Wang, Agustín Bergé | 2019-08-05 | 2019-08 | P1648R0 | LEWGI, Library Evolution, Library | |
| P1652R1 | Printf corner cases in std::format | Zhihao Yuan, Victor Zverovich | 2019-07-18 | 2019-08 | P1652R0 | Library | Adopted 2019-07 |
| P1661R1 | Remove dedicated precalculated hash lookup interface | Tomasz Kamiński | 2019-07-18 | 2019-08 | P1661R0 | Library | Adopted 2019-07 |
| P1664R0 | reconstructible_range - a concept for putting ranges back together | JeanHeyd Meneide | 2019-08-05 | 2019-08 | Library Evolution, Library | ||
| P1668R1 | Enabling constexpr Intrinsics By Permitting Unevaluated inline-assembly in constexpr Functions | Erich Keane | 2019-07-17 | 2019-08 | EWGI, Evolution | Adopted 2019-07 | |
| P1675R1 | rethrow_exception must be allowed to copy | Billy O'Neal | 2019-07-19 | 2019-08 | P1675R0 | Evolution, Core, Library | |
| P1677R1 | Cancellation is not an Error | Kirk Shoop | 2019-08-05 | 2019-08 | P1677R0 | SG1, Evolution, Library Evolution | |
| P1678R1 | Callbacks and Composition | Kirk Shoop | 2019-08-05 | 2019-08 | P1678R0 | SG1, SG13, Library Evolution | |
| P1682R1 | std::to_underlying | JeanHeyd Meneide | 2019-08-05 | 2019-08 | P1682R0 | Library | |
| P1687R1 | Summary of the Tooling Study Group's Modules Ecosystem Technical Report Telecons | Bryce Adelstein Lelbach, Ben Craig | 2019-08-06 | 2019-08 | P1687R0 | SG2, SG15, Evolution | |
| P1689R1 | Format for describing dependencies of source files | Ben Boeckel, Brad King | 2019-08-09 | 2019-08 | P1689R0 | SG15, SG16, Evolution | |
| P1703R1 | Recognizing Header Unit Imports Requires Full Preprocessing | Boris Kolpackov | 2019-07-19 | 2019-08 | P1703R0 | SG2, Evolution | Adopted 2019-07 |
| P1714R1 | NTTP are incomplete without float, double, and long double! | Jorg Brown | 2019-07-19 | 2019-08 | P1714R0 | Evolution, Core | |
| P1716R1 | ranges compare algorithm are over-constrained | Tomasz Kamiński | 2019-07-28 | 2019-08 | P1716R0 | Library Evolution | |
| P1732R1 | Do not promise support for function syntax of operators | CJ Johnson | 2019-07-26 | 2019-08 | P1732R0 | Library Evolution, Library | |
| P1739R1 | Type erasure for forwarding ranges in combination with "subrange-y" view adaptors | Hannes Hauswedell | 2019-07-15 | 2019-08 | P1739R0 | Library | |
| P1746R1 | Feedback on P1386R2 std::audio | Sophia Poirier, Richard Powell, David Singer, Dan Klingler, Tony Guetta, Doug Wyatt | 2019-07-24 | 2019-08 | P1746R0 | SG13, Library Evolution | |
| P1754R1 | Rename concepts to standard_case for C++20, while we still can | Herb Sutter, Casey Carter, Gabriel Dos Reis, Eric Niebler, Bjarne Stroustrup, Andrew Sutton, Ville Voutilainen | 2019-07-18 | 2019-08 | P1754R0 | Evolution, Library Evolution, Library | Adopted 2019-07 |
| P1759R1 | Native handle from file streams | Elias Kosunen | 2019-07-29 | 2019-08 | P1759R0 | Library Evolution | |
| P1766R1 | Mitigating minor modules maladies | Richard Smith | 2019-08-07 | 2019-08 | P1766R0 | Evolution | Adopted 2019-07 |
| P1771R1 | [[nodiscard]] for constructors | Peter Sommerlad | 2019-07-19 | 2019-08 | P1771R0 | EWGI, Evolution, Core | Adopted 2019-07 |
| P1779R1 | ABI isolation for member functions | S. Davis Herring | 2019-08-02 | 2019-08 | P1779R0 | Evolution | |
| P1782R1 | Local contract restrictions | S. Davis Herring | 2019-08-02 | 2019-08 | P1782R0 | SG21 | |
| P1787R1 | Declarations and where to find them | S. Davis Herring | 2019-08-02 | 2019-08 | P1787R0 | Core | |
| P1788R2 | Reuse of the built modules (BMI) | Olga Arkhipova | 2019-07-18 | 2019-08 | P1788R1 | SG15, Core | |
| P1801R0 | Clarifying atomic[thread::id]::compare_exchange_* | Herb Sutter | 2019-07-17 | 2019-08 | SG1, Library Evolution, Library | ||
| P1803R0 | packexpr(args, I) - compile-time friendly pack inspection | JeanHeyd Meneide | 2019-08-06 | 2019-08 | EWGI, Evolution | ||
| P1807R0 | An Overview of Contracts Papers for Cologne | Joshua Berne | 2019-07-23 | 2019-08 | Evolution | ||
| P1808R0 | Contra P0339 "polymorphic_allocator as a vocabulary type" | Arthur O'Dwyer | 2019-07-11 | 2019-08 | Library Evolution, Library | ||
| P1810R0 | A Quick Look at What P1754 Will Change | Christopher Di Bella | 2019-08-05 | 2019-08 | Evolution, Library Evolution, Library | ||
| P1811R0 | Relaxing redefinition restrictions for re-exportation robustness | Richard Smith, Gabriel Dos Reis | 2019-08-07 | 2019-08 | Evolution | Adopted 2019-07 | |
| P1812R0 | Axioms should be assumable: a minimal fix for contracts | Timur Doumler, Ville Voutilainen | 2019-07-18 | 2019-08 | Evolution, Core | ||
| P1813R0 | A Concept Design for the Numeric Algorithms | Christopher Di Bella | 2019-08-02 | 2019-08 | SG6, Library Evolution | ||
| P1814R0 | Wording for Class Template Argument Deduction for Alias Templates | Mike Spertus | 2019-07-28 | 2019-08 | Core | Adopted 2019-07 | |
| P1815R0 | Translation-unit-local entities | S. Davis Herring | 2019-08-02 | 2019-08 | Core | ||
| P1816R0 | Wording for class template argument deduction for aggregates | Timur Doumler | 2019-07-18 | 2019-08 | Core | Adopted 2019-07 | |
| P1818R0 | Narrowing and Widening Conversions | Lawrence Crowl | 2019-07-16 | 2019-08 | EWGI | ||
| P1819R0 | Interpolated Literals | Vittorio Romeo | 2019-07-20 | 2019-08 | EWGI | ||
| P1823R0 | Remove Contracts from C++20 | Nicolai Josuttis, Ville Voutilainen, Roger Orr, Daveed Vandevoorde, John Spicer, Christopher Di Bella | 2019-07-21 | 2019-08 | Evolution, Core | Adopted 2019-07 | |
| P1825R0 | Merged wording for P0527R1 and P1155R3 | David Stone | 2019-07-19 | 2019-08 | Core | Adopted 2019-07 | |
| P1830R0 | std::dependent_false | Ruslan Arutyunyan | 2019-07-18 | 2019-08 | LEWGI | ||
| P1831R0 | deprecating volatile: library | JF Bastien | 2019-08-02 | 2019-08 | Library | ||
| P1832R0 | Improving Debug Builds Inline With User Expectation | John McFarlane | 2019-08-05 | 2019-08 | SG2, SG14, SG15 | ||
| P1837R0 | Remove NTTPs of class type from C++20 | Arthur O'Dwyer | 2019-07-29 | 2019-08 | Evolution, Library Evolution | ||
| P1839R0 | Accessing Object Representations | Krystian Stasiowski | 2019-08-09 | 2019-08 | Core | ||
| P1840R0 | Cologne 2019, Record of Discussion | Nina Ranns | 2019-08-05 | 2019-08 | WG21 | ||
| P1841R0 | Wording for Individually Specializable Numeric Traits | Walter E Brown | 2019-08-03 | 2019-08 | Library | ||
| P1842R0 | Generalized Module (Dependency?) Mapper | Boris Kolpackov | 2019-08-04 | 2019-08 | SG15 | ||
| P1843R0 | Comparison and Hasher Requirements | Billy O'Neal | 2019-08-01 | 2019-08 | Library Evolution | ||
| P1844R0 | Enhancement of regex | Nozomu Katō | 2019-08-04 | 2019-08 | SG16, LEWGI | ||
| P1845R0 | 2019-09-21 Denver Tooling Meeting | Bryce Adelstein Lelbach, Jon Kalb | 2019-08-06 | 2019-08 | SG15 | ||
| P1846R0 | Teach class Last | John McFarlane | 2019-08-05 | 2019-08 | SG20 | ||
| P1847R0 | Make declaration order layout mandated | Pal Balog | 2019-08-05 | 2019-08 | Evolution | ||
| P1851R0 | Guidelines For snake_case Concept Naming | Jonathan Müller | 2019-08-09 | 2019-08 | Library Evolution |
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