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-rw-r--r--clang/docs/ReleaseNotes.rst5
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diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index ea16029..81483c1 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -46,6 +46,7 @@ Potentially Breaking Changes
``endbr64`` instruction at the labels named as possible branch
destinations, so it is not safe to use a register-controlled branch
instruction to branch to one. (In line with gcc.)
+- Added a sugar type `PredefinedSugarType` to improve diagnostic messages. (#GH143653)
C/C++ Language Potentially Breaking Changes
-------------------------------------------
@@ -76,6 +77,10 @@ C++ Specific Potentially Breaking Changes
whose nested-name-specifier doesn't refer to a base class such as
``using CurrentClass::Foo;`` is now rejected in C++98 mode.
+- For C++20 modules, the Reduced BMI mode will be the default option. This may introduce
+ regressions if your build system supports two-phase compilation model but haven't support
+ reduced BMI or it is a compiler bug or a bug in users code.
+
ABI Changes in This Version
---------------------------