[clang] [Clang] Add diagnostic when scoped enumeration requires an explicit conversion for binary operations (PR #152698)

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<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


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``````````bash
git-clang-format --diff HEAD~1 HEAD --extensions cpp,h -- clang/include/clang/Sema/Sema.h clang/lib/Sema/SemaExpr.cpp clang/test/CXX/over/over.match/over.match.funcs/over.match.oper/p3.cpp clang/test/SemaCXX/enum-scoped.cpp clang/test/SemaCXX/opaque-enum-declaration-in-class-template.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/Sema/SemaExpr.cpp b/clang/lib/Sema/SemaExpr.cpp
index ff89a5906..0a9fe1e68 100644
--- a/clang/lib/Sema/SemaExpr.cpp
+++ b/clang/lib/Sema/SemaExpr.cpp
@@ -10773,10 +10773,10 @@ static void diagnoseScopedEnums(Sema &S, const SourceLocation Loc,
   unsigned diagID =
       isCxx23 ? diag::note_no_implicit_conversion_for_scoped_enum_cxx23
               : diag::note_no_implicit_conversion_for_scoped_enum;
-  auto diagnosticHelper = [&S, isCxx23, diagID](const Expr *expr, const QualType type) {
+  auto diagnosticHelper = [&S, isCxx23, diagID](const Expr *expr,
+                                                const QualType type) {
     SourceLocation beginLoc = expr->getBeginLoc();
-    QualType intType =
-        type->castAs<EnumType>()->getDecl()->getIntegerType();
+    QualType intType = type->castAs<EnumType>()->getDecl()->getIntegerType();
     std::string insertionString =
         isCxx23 ? "std::to_underlying("
                 : "static_cast<" + intType.getAsString() + ">(";
@@ -10793,7 +10793,8 @@ static void diagnoseScopedEnums(Sema &S, const SourceLocation Loc,
 }
 
 QualType Sema::CheckMultiplyDivideOperands(ExprResult &LHS, ExprResult &RHS,
-                                           SourceLocation Loc, BinaryOperatorKind Opc) {
+                                           SourceLocation Loc,
+                                           BinaryOperatorKind Opc) {
   bool IsCompAssign = Opc == BO_MulAssign || Opc == BO_DivAssign;
   bool IsDiv = Opc == BO_Div || Opc == BO_DivAssign;
 

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https://github.com/llvm/llvm-project/pull/152698