[FOLD] address review comments

Author: sdkrystian

clang/docs/ReleaseNotes.rst

@@ -138,6 +138,8 @@ Bug Fixes to Attribute Support
 Bug Fixes to C++ Support
 ^^^^^^^^^^^^^^^^^^^^^^^^
 
+- Fixed a crash when an expression with a dependent ``__typeof__`` type is used as the operand of a unary operator. (#GH97646)
+
 Bug Fixes to AST Handling
 ^^^^^^^^^^^^^^^^^^^^^^^^^
 

clang/test/SemaCXX/decltype.cpp

@@ -146,3 +146,11 @@ class conditional {
 // FIXME: The diagnostics here are produced twice.
 void foo(conditional<decltype((1),int>) {  // expected-note 2 {{to match this '('}} expected-error {{expected ')'}} expected-note 2{{to match this '<'}}
 } // expected-error {{expected function body after function declarator}} expected-error 2 {{expected '>'}} expected-error {{expected ')'}}
+
+namespace GH97646 {
+  template<bool B>
+  void f() {
+    decltype(B) x = false;
+    !x;
+  }
+}

clang/test/SemaCXX/dependent-typeof.cpp

@@ -3,3 +3,13 @@
 typeof_unqual(int) u = 12; // expected-error {{expected function body after function declarator}}
 __typeof_unqual(int) _u = 12;
 __typeof_unqual__(int) __u = 12;
+
+namespace GH97646 {
+  template<bool B>
+  void f() {
+    __typeof__(B) x = false;
+    __typeof_unqual__(B) y = false;
+    !x;
+    !y;
+  }
+}