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<?xml version="1.0" encoding="utf-8"?>
<feed xmlns="http://www.w3.org/2005/Atom">
<title>cpprefjp - C++日本語リファレンス</title>
<link href="https://cpprefjp.github.io" />
<updated>2026-04-23T12:32:58.512522</updated>
<id>8dc73159-f7ce-461d-b7d4-8f08d372fbf8</id>
<entry>
<title>start-join-sender -- execution/(simple_)counting_scope: LWG4504適用</title>
<link href="https://cpprefjp.github.io/reference/execution/execution/counting_scope/start-join-sender.html"/>
<id>d4a7aac362839892445673f02afadbb97c6430f4:reference/execution/execution/counting_scope/start-join-sender.md</id>
<updated>2026-04-23T21:27:56+09:00</updated>
<summary type="html"><pre><code>diff --git a/reference/execution/execution/counting_scope/start-join-sender.md b/reference/execution/execution/counting_scope/start-join-sender.md
index 318420e84..c9e7d5a66 100644
--- a/reference/execution/execution/counting_scope/start-join-sender.md
+++ b/reference/execution/execution/counting_scope/start-join-sender.md
@@ -17,9 +17,8 @@ bool start-join-sender(State&amp; st) noexcept; // exposition only
## 効果
-説明用のメンバ変数`state`に応じて、
+説明用のメンバ変数`count`が`0`のとき、`state`を`joined`に変更して`true`を返す。そうでなければ、`state`に応じて、
-- `unused`, `unused-and-closed`, `joined`のとき、`state`を`joined`に変更して`true`を返す。
- `open`, `open-and-joining`のとき、`state`を`open-and-joining`に変更し、`*this`で`st`を登録して`false`を返す。
- `closed`, `closed-and-joining`のとき、`state`を`closed-and-joining`に変更し、`*this`で`st`を登録して`false`を返す。
@@ -34,3 +33,4 @@ bool start-join-sender(State&amp; st) noexcept; // exposition only
## 参照
- [P3149R11 `async_scope` - Creating scopes for non-sequential concurrency](https://open-std.org/jtc1/sc22/wg21/docs/papers/2025/p3149r11.html)
+- [LWG4504. Wording problem in `{simple_}counting_scope`](https://cplusplus.github.io/LWG/issue4504)
</code></pre></summary>
<author>
<name>yoh</name>
<email>kawasaki.liamg@gmail.com</email>
</author>
</entry>
<entry>
<title>start-join-sender -- execution/(simple_)counting_scope: LWG4504適用</title>
<link href="https://cpprefjp.github.io/reference/execution/execution/simple_counting_scope/start-join-sender.html"/>
<id>d4a7aac362839892445673f02afadbb97c6430f4:reference/execution/execution/simple_counting_scope/start-join-sender.md</id>
<updated>2026-04-23T21:27:56+09:00</updated>
<summary type="html"><pre><code>diff --git a/reference/execution/execution/simple_counting_scope/start-join-sender.md b/reference/execution/execution/simple_counting_scope/start-join-sender.md
index fc83c74a0..0a01cc6a2 100644
--- a/reference/execution/execution/simple_counting_scope/start-join-sender.md
+++ b/reference/execution/execution/simple_counting_scope/start-join-sender.md
@@ -17,9 +17,8 @@ bool start-join-sender(State&amp; st) noexcept; // exposition only
## 効果
-説明用のメンバ変数`state`に応じて、
+説明用のメンバ変数`count`が`0`のとき、`state`を`joined`に変更して`true`を返す。そうでなければ、`state`に応じて、
-- `unused`, `unused-and-closed`, `joined`のとき、`state`を`joined`に変更して`true`を返す。
- `open`, `open-and-joining`のとき、`state`を`open-and-joining`に変更し、`*this`で`st`を登録して`false`を返す。
- `closed`, `closed-and-joining`のとき、`state`を`closed-and-joining`に変更し、`*this`で`st`を登録して`false`を返す。
@@ -35,3 +34,4 @@ bool start-join-sender(State&amp; st) noexcept; // exposition only
## 参照
- [P3149R11 `async_scope` - Creating scopes for non-sequential concurrency](https://open-std.org/jtc1/sc22/wg21/docs/papers/2025/p3149r11.html)
+- [LWG4504. Wording problem in `{simple_}counting_scope`](https://cplusplus.github.io/LWG/issue4504)
</code></pre></summary>
<author>
<name>yoh</name>
<email>kawasaki.liamg@gmail.com</email>
</author>
</entry>
<entry>
<title>run_loop -- execution/run_loop: LWG4476適用</title>
<link href="https://cpprefjp.github.io/reference/execution/execution/run_loop.html"/>
<id>8ba04f913aeb2162205355f5b8c86f88ef9d153a:reference/execution/execution/run_loop.md</id>
<updated>2026-04-23T21:23:31+09:00</updated>
<summary type="html"><pre><code>diff --git a/reference/execution/execution/run_loop.md b/reference/execution/execution/run_loop.md
index 48b1f853c..7f4feeaba 100644
--- a/reference/execution/execution/run_loop.md
+++ b/reference/execution/execution/run_loop.md
@@ -121,3 +121,4 @@ success
## 参照
- [P2300R10 `std::execution`](https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2024/p2300r10.html)
- [P3396R1 std::execution wording fixes](https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2024/p3396r1.html)
+- [LWG4476. `run_loop` should not have a `set_error` completion](https://cplusplus.github.io/LWG/issue4476)
</code></pre></summary>
<author>
<name>yoh</name>
<email>kawasaki.liamg@gmail.com</email>
</author>
</entry>
<entry>
<title>finish -- execution/run_loop: LWG4476適用</title>
<link href="https://cpprefjp.github.io/reference/execution/execution/run_loop/finish.html"/>
<id>8ba04f913aeb2162205355f5b8c86f88ef9d153a:reference/execution/execution/run_loop/finish.md</id>
<updated>2026-04-23T21:23:31+09:00</updated>
<summary type="html"><pre><code>diff --git a/reference/execution/execution/run_loop/finish.md b/reference/execution/execution/run_loop/finish.md
index fe72b5e9a..3a95d1c68 100644
--- a/reference/execution/execution/run_loop/finish.md
+++ b/reference/execution/execution/run_loop/finish.md
@@ -6,7 +6,7 @@
* cpp26[meta cpp]
```cpp
-void finish();
+void finish() noexcept;
```
## 概要
@@ -21,6 +21,10 @@ void finish();
説明専用メンバ`state`を終了中(finishing)に変更する。
+## 例外
+投げない
+
+
## 同期操作
メンバ関数`finish`および説明専用メンバ関数[`pop-front`, `push-back`](run.md)は不可分(atomically)に実行される。
@@ -64,3 +68,4 @@ int main()
## 参照
- [P2300R10 `std::execution`](https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2024/p2300r10.html)
- [P3396R1 std::execution wording fixes](https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2024/p3396r1.html)
+- [LWG4476. `run_loop` should not have a `set_error` completion](https://cplusplus.github.io/LWG/issue4476)
</code></pre></summary>
<author>
<name>yoh</name>
<email>kawasaki.liamg@gmail.com</email>
</author>
</entry>
<entry>
<title>get_scheduler -- execution/run_loop: LWG4476適用</title>
<link href="https://cpprefjp.github.io/reference/execution/execution/run_loop/get_scheduler.html"/>
<id>8ba04f913aeb2162205355f5b8c86f88ef9d153a:reference/execution/execution/run_loop/get_scheduler.md</id>
<updated>2026-04-23T21:23:31+09:00</updated>
<summary type="html"><pre><code>diff --git a/reference/execution/execution/run_loop/get_scheduler.md b/reference/execution/execution/run_loop/get_scheduler.md
index cde02aa02..73d8a97b6 100644
--- a/reference/execution/execution/run_loop/get_scheduler.md
+++ b/reference/execution/execution/run_loop/get_scheduler.md
@@ -6,7 +6,7 @@
* cpp26[meta cpp]
```cpp
-run-loop-scheduler get_scheduler();
+run-loop-scheduler get_scheduler() noexcept;
```
* run-loop-scheduler[link run-loop-scheduler.md]
@@ -18,6 +18,10 @@ run-loop-scheduler get_scheduler();
`run_loop`インスタンス上で作業を[スケジュール](../schedule.md)する[`run-loop-scheduler`](run-loop-scheduler.md)インスタンスを返す。
+## 例外
+投げない
+
+
## 例
```cpp example
#include &lt;cassert&gt;
@@ -83,3 +87,4 @@ int main()
## 参照
- [P2300R10 `std::execution`](https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2024/p2300r10.html)
+- [LWG4476. `run_loop` should not have a `set_error` completion](https://cplusplus.github.io/LWG/issue4476)
</code></pre></summary>
<author>
<name>yoh</name>
<email>kawasaki.liamg@gmail.com</email>
</author>
</entry>
<entry>
<title>run-loop-opstate -- execution/run_loop: LWG4476適用</title>
<link href="https://cpprefjp.github.io/reference/execution/execution/run_loop/run-loop-opstate.html"/>
<id>8ba04f913aeb2162205355f5b8c86f88ef9d153a:reference/execution/execution/run_loop/run-loop-opstate.md</id>
<updated>2026-04-23T21:23:31+09:00</updated>
<summary type="html"><pre><code>diff --git a/reference/execution/execution/run_loop/run-loop-opstate.md b/reference/execution/execution/run_loop/run-loop-opstate.md
index 8d5d921b6..892623743 100644
--- a/reference/execution/execution/run_loop/run-loop-opstate.md
+++ b/reference/execution/execution/run_loop/run-loop-opstate.md
@@ -21,9 +21,9 @@ struct run-loop-opstate;
```cpp
struct run-loop-opstate-base { // exposition only
- virtual void execute() = 0; // exposition only
- run_loop* loop; // exposition only
- run-loop-opstate-base* next; // exposition only
+ virtual void execute() noexcept = 0; // exposition only
+ run_loop* loop; // exposition only
+ run-loop-opstate-base* next; // exposition only
};
```
* run_loop[link ../run_loop.md]
@@ -48,16 +48,9 @@ struct run-loop-opstate-base { // exposition only
- 式`start(o)`は下記と等価 :
```cpp
- try {
- o.loop-&gt;push-back(addressof(o));
- } catch(...) {
- set_error(std::move(REC(o)), current_exception());
- }
+ o.loop-&gt;push-back(addressof(o));
```
* push-back[link run.md]
- * set_error[link ../set_error.md]
- * std::move[link /reference/utility/move.md]
- * current_exception()[link /reference/exception/current_exception.md]
## バージョン
@@ -73,3 +66,4 @@ struct run-loop-opstate-base { // exposition only
## 参照
- [P2300R10 `std::execution`](https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2024/p2300r10.html)
+- [LWG4476. `run_loop` should not have a `set_error` completion](https://cplusplus.github.io/LWG/issue4476)
</code></pre></summary>
<author>
<name>yoh</name>
<email>kawasaki.liamg@gmail.com</email>
</author>
</entry>
<entry>
<title>run -- execution/run_loop: LWG4476適用</title>
<link href="https://cpprefjp.github.io/reference/execution/execution/run_loop/run.html"/>
<id>8ba04f913aeb2162205355f5b8c86f88ef9d153a:reference/execution/execution/run_loop/run.md</id>
<updated>2026-04-23T21:23:31+09:00</updated>
<summary type="html"><pre><code>diff --git a/reference/execution/execution/run_loop/run.md b/reference/execution/execution/run_loop/run.md
index c9a863bb1..5148992ba 100644
--- a/reference/execution/execution/run_loop/run.md
+++ b/reference/execution/execution/run_loop/run.md
@@ -6,7 +6,7 @@
* cpp26[meta cpp]
```cpp
-void run();
+void run() noexcept;
```
## 概要
@@ -19,7 +19,7 @@ void run();
### 説明専用メンバ関数 `pop-front`
```cpp
-run-loop-opstate-base* pop-front();
+run-loop-opstate-base* pop-front() noexcept;
```
* run-loop-opstate-base[link run-loop-opstate.md]
@@ -32,7 +32,7 @@ run-loop-opstate-base* pop-front();
### 説明専用メンバ関数 `push-back`
```cpp
-void push-back(run-loop-opstate-base* item);
+void push-back(run-loop-opstate-base* item) noexcept;
```
* run-loop-opstate-base[link run-loop-opstate.md]
@@ -59,6 +59,10 @@ while (auto* op = pop-front()) {
* execute()[link run-loop-opstate.md]
+## 例外
+投げない
+
+
## 同期操作
`run`と[デストラクタ](op_destructor.md)以外のメンバ関数同時呼び出しは、データ競合を引き起こさない。
@@ -117,3 +121,4 @@ finished
## 参照
- [P2300R10 `std::execution`](https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2024/p2300r10.html)
- [P3396R1 std::execution wording fixes](https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2024/p3396r1.html)
+- [LWG4476. `run_loop` should not have a `set_error` completion](https://cplusplus.github.io/LWG/issue4476)
</code></pre></summary>
<author>
<name>yoh</name>
<email>kawasaki.liamg@gmail.com</email>
</author>
</entry>
<entry>
<title>as_awaitable -- execution/as_awaitable: LWG4361適用</title>
<link href="https://cpprefjp.github.io/reference/execution/execution/as_awaitable.html"/>
<id>9dddd7c4c03607de434e85532a742b6c8328a2dc:reference/execution/execution/as_awaitable.md</id>
<updated>2026-04-23T21:09:16+09:00</updated>
<summary type="html"><pre><code>diff --git a/reference/execution/execution/as_awaitable.md b/reference/execution/execution/as_awaitable.md
index 631abf765..ff11d67d8 100644
--- a/reference/execution/execution/as_awaitable.md
+++ b/reference/execution/execution/as_awaitable.md
@@ -136,7 +136,7 @@ struct awaitable-receiver {
説明用の式`rcvr`を`awaitable-receiver`型の右辺値、`crcvr`を`rcvr`をconst参照する左辺値、`vs`を式パック、`err`を`Err`型の式とする。ある部分式`expr`に対する`MAKE-NOEXCEPT(expr)`を`[] noexcept -&gt; decltype(auto) { return (expr); }()`と等価な式とする。このとき
-- [`constructible_from`](/reference/concepts/constructible_from.md)`&lt;result-type, decltype((vs))...&gt;`を満たすとき、式[`set_value`](set_value.md)`(rcvr, vs...)`は下記と等価。そうでなければ、式`set_value(rcvr, vs...)`は不適格となる。
+- 式[`set_value`](set_value.md)`(rcvr, vs...)`は下記と等価。[`constructible_from`](/reference/concepts/constructible_from.md)`&lt;result-type, decltype((vs))...&gt;`を満たすこと。
```cpp
try {
@@ -245,3 +245,4 @@ value-type await_resume();
- [LWG4358 §[exec.as.awaitable] is using &#34;Preconditions:&#34; when it should probably be described in the constraint](https://cplusplus.github.io/LWG/issue4358)
- [LWG4360 `awaitable-sender` concept should qualify use of `awaitable-receiver` type](https://cplusplus.github.io/LWG/issue4360)
- [LWG4133 `awaitable-receiver`&#39;s members are potentially throwing](https://cplusplus.github.io/LWG/issue4133)
+- [LWG4361 `awaitable-receiver::set_value` should use Mandates instead of constraints](https://cplusplus.github.io/LWG/issue4361)
</code></pre></summary>
<author>
<name>yoh</name>
<email>kawasaki.liamg@gmail.com</email>
</author>
</entry>
<entry>
<title>basic-receiver -- execution/as_awaitable: LWG4361適用</title>
<link href="https://cpprefjp.github.io/reference/execution/execution/basic-receiver.html"/>
<id>9dddd7c4c03607de434e85532a742b6c8328a2dc:reference/execution/execution/basic-receiver.md</id>
<updated>2026-04-23T21:09:16+09:00</updated>
<summary type="html"><pre><code>diff --git a/reference/execution/execution/basic-receiver.md b/reference/execution/execution/basic-receiver.md
index 75181f9a5..19e6527a9 100644
--- a/reference/execution/execution/basic-receiver.md
+++ b/reference/execution/execution/basic-receiver.md
@@ -17,19 +17,16 @@ namespace std::execution {
static constexpr const auto&amp; complete = impls-for&lt;tag-t&gt;::complete; // exposition only
template&lt;class... Args&gt;
- requires callable&lt;decltype(complete), Index, state-t&amp;, Rcvr&amp;, set_value_t, Args...&gt;
void set_value(Args&amp;&amp;... args) &amp;&amp; noexcept {
complete(Index(), op-&gt;state, op-&gt;rcvr, set_value_t(), std::forward&lt;Args&gt;(args)...);
}
template&lt;class Error&gt;
- requires callable&lt;decltype(complete), Index, state-t&amp;, Rcvr&amp;, set_error_t, Error&gt;
void set_error(Error&amp;&amp; err) &amp;&amp; noexcept {
complete(Index(), op-&gt;state, op-&gt;rcvr, set_error_t(), std::forward&lt;Error&gt;(err));
}
- void set_stopped() &amp;&amp; noexcept
- requires callable&lt;decltype(complete), Index, state-t&amp;, Rcvr&amp;, set_stopped_t&gt; {
+ void set_stopped() &amp;&amp; noexcept {
complete(Index(), op-&gt;state, op-&gt;rcvr, set_stopped_t());
}
@@ -45,7 +42,6 @@ namespace std::execution {
* tag_of_t[link tag_of_t.md]
* state-type[link basic-operation.md]
* impls-for[link impls-for.md]
-* callable[link /reference/functional/callable.md]
* set_value_t[link set_value.md]
* set_error_t[link set_error.md]
* set_stopped_t[link set_stopped.md]
@@ -93,3 +89,4 @@ using env-type = call-result-t&lt;
## 参照
- [P2300R10 `std::execution`](https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2024/p2300r10.html)
+- [LWG4361. `awaitable-receiver::set_value` should use Mandates instead of constraints](https://cplusplus.github.io/LWG/issue4361)
</code></pre></summary>
<author>
<name>yoh</name>
<email>kawasaki.liamg@gmail.com</email>
</author>
</entry>
<entry>
<title>set_error -- execution/{set_*,start}: LWG4143適用</title>
<link href="https://cpprefjp.github.io/reference/execution/execution/set_error.html"/>
<id>798d65c0eb1ba05c89876d2ccd6f0f49c22ca6b8:reference/execution/execution/set_error.md</id>
<updated>2026-04-23T20:57:18+09:00</updated>
<summary type="html"><pre><code>diff --git a/reference/execution/execution/set_error.md b/reference/execution/execution/set_error.md
index 9b67e51c8..e4e8a2dff 100644
--- a/reference/execution/execution/set_error.md
+++ b/reference/execution/execution/set_error.md
@@ -23,6 +23,8 @@ namespace std::execution {
- 引数`rcvr`が左辺値またはconst右辺値の場合、式`set_error(rcvr, err)`は不適格となる。
- そうでなければ、`rcvr.set_error(err)`と等価である。
+上記の式が適格なとき、その型は`void`であること。
+
## 例外
投げない
@@ -83,3 +85,4 @@ int main()
## 参照
- [P2300R10 `std::execution`](https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2024/p2300r10.html)
+- [LWG4143. `execution::set_value/set_error/set_stopped/start` should always return `void`](https://cplusplus.github.io/LWG/issue4143)
</code></pre></summary>
<author>
<name>yoh</name>
<email>kawasaki.liamg@gmail.com</email>
</author>
</entry>
<entry>
<title>set_stopped -- execution/{set_*,start}: LWG4143適用</title>
<link href="https://cpprefjp.github.io/reference/execution/execution/set_stopped.html"/>
<id>798d65c0eb1ba05c89876d2ccd6f0f49c22ca6b8:reference/execution/execution/set_stopped.md</id>
<updated>2026-04-23T20:57:18+09:00</updated>
<summary type="html"><pre><code>diff --git a/reference/execution/execution/set_stopped.md b/reference/execution/execution/set_stopped.md
index 1dff3b1ba..bc8d9bc5e 100644
--- a/reference/execution/execution/set_stopped.md
+++ b/reference/execution/execution/set_stopped.md
@@ -23,6 +23,8 @@ namespace std::execution {
- 引数`rcvr`が左辺値またはconst右辺値の場合、式`set_stopped(rcvr)`は不適格となる。
- そうでなければ、`rcvr.set_stopped()`と等価である。
+上記の式が適格なとき、その型は`void`であること。
+
## 例外
投げない
@@ -83,3 +85,4 @@ int main()
## 参照
- [P2300R10 `std::execution`](https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2024/p2300r10.html)
+- [LWG4143. `execution::set_value/set_error/set_stopped/start` should always return `void`](https://cplusplus.github.io/LWG/issue4143)
</code></pre></summary>
<author>
<name>yoh</name>
<email>kawasaki.liamg@gmail.com</email>
</author>
</entry>
<entry>
<title>set_value -- execution/{set_*,start}: LWG4143適用</title>
<link href="https://cpprefjp.github.io/reference/execution/execution/set_value.html"/>
<id>798d65c0eb1ba05c89876d2ccd6f0f49c22ca6b8:reference/execution/execution/set_value.md</id>
<updated>2026-04-23T20:57:18+09:00</updated>
<summary type="html"><pre><code>diff --git a/reference/execution/execution/set_value.md b/reference/execution/execution/set_value.md
index b404c9aa7..6db11525f 100644
--- a/reference/execution/execution/set_value.md
+++ b/reference/execution/execution/set_value.md
@@ -23,6 +23,8 @@ namespace std::execution {
- 引数`rcvr`が左辺値またはconst右辺値の場合、式`set_value(rcvr, vs...)`は不適格となる。
- そうでなければ、`rcvr.set_value(vs...)`と等価である。
+上記の式が適格なとき、その型は`void`であること。
+
## 例外
投げない
@@ -122,3 +124,4 @@ int main()
## 参照
- [P2300R10 `std::execution`](https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2024/p2300r10.html)
+- [LWG4143. `execution::set_value/set_error/set_stopped/start` should always return `void`](https://cplusplus.github.io/LWG/issue4143)
</code></pre></summary>
<author>
<name>yoh</name>
<email>kawasaki.liamg@gmail.com</email>
</author>
</entry>
<entry>
<title>start -- execution/{set_*,start}: LWG4143適用</title>
<link href="https://cpprefjp.github.io/reference/execution/execution/start.html"/>
<id>798d65c0eb1ba05c89876d2ccd6f0f49c22ca6b8:reference/execution/execution/start.md</id>
<updated>2026-04-23T20:57:18+09:00</updated>
<summary type="html"><pre><code>diff --git a/reference/execution/execution/start.md b/reference/execution/execution/start.md
index 6081a38a3..1435a68cc 100644
--- a/reference/execution/execution/start.md
+++ b/reference/execution/execution/start.md
@@ -19,6 +19,8 @@ namespace std::execution {
式`start(op)`は、`op`が右辺値の場合は不適格となる。
そうでなければ、`op.start()`と等価。
+上記の式が適格なとき、その型は`void`であること。
+
## カスタマイゼーションポイント
[Operation State](operation_state.md)`op`に対して式`op.start()`が呼び出される。
@@ -89,3 +91,4 @@ int main()
## 参照
- [P2300R10 `std::execution`](https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2024/p2300r10.html)
+- [LWG4143. `execution::set_value/set_error/set_stopped/start` should always return `void`](https://cplusplus.github.io/LWG/issue4143)
</code></pre></summary>
<author>
<name>yoh</name>
<email>kawasaki.liamg@gmail.com</email>
</author>
</entry>
<entry>
<title>get_forward_progress_guarantee -- execution/{scheduler,get_forward_progress_guarantee}: LWG4354適用</title>
<link href="https://cpprefjp.github.io/reference/execution/execution/get_forward_progress_guarantee.html"/>
<id>cb5bcdb3b40f6029adc424e98c60c7031a46ce89:reference/execution/execution/get_forward_progress_guarantee.md</id>
<updated>2026-04-23T20:51:40+09:00</updated>
<summary type="html"><pre><code>diff --git a/reference/execution/execution/get_forward_progress_guarantee.md b/reference/execution/execution/get_forward_progress_guarantee.md
index ff555bdca..381b1e22d 100644
--- a/reference/execution/execution/get_forward_progress_guarantee.md
+++ b/reference/execution/execution/get_forward_progress_guarantee.md
@@ -21,8 +21,7 @@ namespace std::execution {
そうでなければ、呼び出し式`get_forward_progress_guarantee(sch)`は下記と等価であり、[`forward_progress_guarantee`](forward_progress_guarantee.md)列挙型の値となる。
-- 引数`sch`がconst修飾された`csch`を用いて、適格であるならば式`cenv.query(get_forward_progress_guarantee)`
-- そうでなければ、[`forward_progress_guarantee::weakly_parallel`](forward_progress_guarantee.md)
+- 引数`sch`がconst修飾された`csch`を用いて、式`cenv.query(get_forward_progress_guarantee)`
## 例外
@@ -30,7 +29,7 @@ namespace std::execution {
## カスタマイゼーションポイント
-const修飾[Scheduler](scheduler.md)`sch`に対して式`csch.query(get_forward_progress_guarantee)`が呼び出される。
+const修飾[Scheduler](scheduler.md)`csch`に対して式`csch.query(get_forward_progress_guarantee)`が呼び出される。
このとき、`noexcept(csch.query(get_forward_progress_guarantee)) == true`であること。
@@ -52,3 +51,4 @@ const修飾[Scheduler](scheduler.md)`sch`に対して式`csch.query(get_forward_
## 参照
- [P2300R10 `std::execution`](https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2024/p2300r10.html)
+- [LWG4354. Reconsider `weakly_parallel` as the default `forward_progress_guarantee`](https://cplusplus.github.io/LWG/issue4354)
</code></pre></summary>
<author>
<name>yoh</name>
<email>kawasaki.liamg@gmail.com</email>
</author>
</entry>
<entry>
<title>scheduler -- execution/{scheduler,get_forward_progress_guarantee}: LWG4354適用</title>
<link href="https://cpprefjp.github.io/reference/execution/execution/scheduler.html"/>
<id>cb5bcdb3b40f6029adc424e98c60c7031a46ce89:reference/execution/execution/scheduler.md</id>
<updated>2026-04-23T20:51:40+09:00</updated>
<summary type="html"><pre><code>diff --git a/reference/execution/execution/scheduler.md b/reference/execution/execution/scheduler.md
index 8b908529a..67dfbbc0f 100644
--- a/reference/execution/execution/scheduler.md
+++ b/reference/execution/execution/scheduler.md
@@ -12,6 +12,7 @@ namespace std::execution {
queryable&lt;Sch&gt; &amp;&amp;
requires(Sch&amp;&amp; sch) {
{ schedule(std::forward&lt;Sch&gt;(sch)) } -&gt; sender;
+ { get_forward_progress_guarantee(sch) } -&gt; same_as&lt;forward_progress_guarantee&gt;;
{ auto(get_completion_scheduler&lt;set_value_t&gt;(
get_env(schedule(std::forward&lt;Sch&gt;(sch))))) }
-&gt; same_as&lt;remove_cvref_t&lt;Sch&gt;&gt;;
@@ -26,6 +27,8 @@ namespace std::execution {
* sender[link sender.md]
* queryable[link ../queryable.md]
* schedule[link schedule.md]
+* get_forward_progress_guarantee[link get_forward_progress_guarantee.md]
+* forward_progress_guarantee[link forward_progress_guarantee.md]
* get_completion_scheduler[link get_completion_scheduler.md]
* set_value_t[link set_value.md]
* get_env[link get_env.md]
@@ -40,6 +43,7 @@ namespace std::execution {
- [クエリ可能オブジェクト](../queryable.md)である
- `Sch`型の値`sch`に対して下記を満たすこと
- [`execution::schedule`](schedule.md)`(sch)`が[Sender](sender.md)を返す
+ - [`execution::get_forward_progress_guarantee`](get_forward_progress_guarantee.md)`(sch)`が[`forward_progress_guarantee`](forward_progress_guarantee.md)列挙値を返す
- 上記Senderの[値完了関数](set_value.md)の[完了Scheduler](get_completion_scheduler.md)が`Sch`に等しいこと
- コピー可能かつ同値比較可能
@@ -113,3 +117,4 @@ int main()
## 参照
- [P2300R10 `std::execution`](https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2024/p2300r10.html)
- [P3396R1 std::execution wording fixes](https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2024/p3396r1.html)
+- [LWG4354. Reconsider `weakly_parallel` as the default `forward_progress_guarantee`](https://cplusplus.github.io/LWG/issue4354)
</code></pre></summary>
<author>
<name>yoh</name>
<email>kawasaki.liamg@gmail.com</email>
</author>
</entry>
</feed>