[libcxx-commits] [libcxx] [libc++] Verify forward_list self-merging is a no-op (PR #129985)

[Louis Dionne via libcxx-commits]

================
@@ -102,5 +102,12 @@ int main(int, char**) {
     assert(c1 == c3);
   }
 
+  { // Make sure self-merging does nothing.
----------------
ldionne wrote:

```suggestion
  { // LWG3088: Make sure self-merging does nothing.
```

https://github.com/llvm/llvm-project/pull/129985