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-rw-r--r--clang/docs/ReleaseNotes.rst6
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diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index 1e88b58..e533ecf 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -149,6 +149,12 @@ ABI Changes in This Version
- Following the SystemV ABI for x86-64, ``__int128`` arguments will no longer
be split between a register and a stack slot.
+- Fixed Microsoft calling convention for returning certain classes with a
+ templated constructor. If a class has a templated constructor, it should
+ be returned indirectly even if it meets all the other requirements for
+ returning a class in a register. This affects some uses of std::pair.
+ (#GH86384).
+
AST Dumping Potentially Breaking Changes
----------------------------------------
- When dumping a sugared type, Clang will no longer print the desugared type if