deploy: 4d46bce4e1

api/basic_json/operator%5B%5D.md

@@ -70,6 +70,9 @@ Strong exception safety: if an exception occurs, the original value stays intact
 1. The function can throw the following exceptions:
     - Throws [`type_error.305`](../../home/exceptions.md#jsonexceptiontype_error305) if the JSON value is not an array
       or null; in that case, using the `[]` operator with an index makes no sense.
+    - Throws `#!cpp std::length_error` if `idx` equals the maximum value of `size_type`; the array is left unchanged.
+      (This is the one index for which growing the array to hold it cannot be expressed as a `size_type` size, the same
+      way an oversized [`resize`](https://en.cppreference.com/w/cpp/container/vector/resize) throws.)
 2. The function can throw the following exceptions:
     - Throws [`type_error.305`](../../home/exceptions.md#jsonexceptiontype_error305) if the JSON value is not an object
       or null; in that case, using the `[]` operator with a key makes no sense.
@@ -257,7 +260,8 @@ Strong exception safety: if an exception occurs, the original value stays intact
 
 ## Version history
 
-1. Added in version 1.0.0.
+1. Added in version 1.0.0. Fixed in version 3.13.0 to throw `#!cpp std::length_error` instead of emptying the array and
+   accessing it out of bounds when `idx` equals the maximum value of `size_type`.
 2. Added in version 1.0.0. Added overloads for `T* key` in version 1.1.0. Removed overloads for `T* key` (replaced by 3)
    in version 3.11.0.
 3. Added in version 3.11.0. Fixed in version 3.13.0 to consistently accept `std::string_view`-convertible keys, as