Add explanation of P2748

content/disallow-return-temporary-glvalue.md

@@ -0,0 +1,33 @@
+---
+execute: false
+---
+
+## What It Does
+
+`&&` and `const&` references can bind to temporary objects.
+With this change, this is no longer permitted when binding the result of a function
+to a temporary object.
+
+## Why It Matters
+
+Binding the result of a function to a temporary object creates a reference that immediately dangles.
+Disallowing it prevents the user from running into undefined behavior by accident.
+
+## Example
+
+```cpp
+int&& f1() {
+    return 42;  // error
+}
+const double& f2() {
+    static int x = 42;
+    return x;   // error
+}
+
+auto&& id(auto&& r) {
+    return static_cast<decltype(r)&&>(r);
+}
+int&& f3() {
+    return id(42);  // OK, but probably a bug
+}
+```

features_cpp26.yaml

@@ -578,6 +578,7 @@ features:
 
   - desc: "Disallow binding a returned [glvalue](https://en.cppreference.com/w/cpp/language/value_category.html#glvalue) to a temporary"
     paper: P2748
+    content: disallow-return-temporary-glvalue.md
     support:
       - GCC 14
       - Clang 19