New P/R for 4164

Author: jwakely

xml/issue4164.xml

@@ -73,9 +73,7 @@ to simply
 there is no effect on the forward_list"
 </p>
 
-</discussion>
-
-<resolution>
+<superseded>
 <p>This wording is relative to <paper num="n4988"/>.</p>
 
 <ol>
@@ -97,6 +95,47 @@ there <del>shall be</del> <ins>is</ins> no effect
 </li>
 </ol>
 
+</superseded>
+
+<note>2024-10-09; LWG suggested improved wording</note>
+<p>
+The proposed resolution potentially mandates a change to `resize` when
+increasing the size, requiring implementations to "roll back" earlier
+insertions if a later one throws, so that the size is left unchanged.
+It appears that all of libstdc++, libc++ and MSVC already do this.
+</p>
+
+</discussion>
+
+<resolution>
+<p>This wording is relative to <paper num="n4988"/>.</p>
+
+<ol>
+<li>
+<p>Change <sref ref="[forward.list.modifiers]"/> as indicated:</p>
+<blockquote>
+<del>
+None of the overloads of `insert_after` shall
+affect the validity of iterators and references,
+and `erase_after` shall invalidate
+only iterators and references to the erased elements.
+</del>
+<ins>The member functions in this subclause do not
+affect the validity of iterators and references when inserting elements,
+and when erasing elements invalidate iterators and references
+to the erased elements only.
+</ins>
+If an exception is thrown
+<del>during `insert_after`</del>
+<ins>by any of these member functions</ins>
+there <del>shall be</del> <ins>is</ins> no effect
+<ins>on the container</ins>.
+</blockquote>
+
+</li>
+</ol>
+
+
 </resolution>
 
 </issue>