[clang-tidy][NFC] Fix misc-const-correctness warnings (12/N)

clang-tools-extra/clang-tidy/bugprone/ArgumentCommentCheck.cpp

@@ -81,14 +81,16 @@ static std::vector<std::pair<SourceLocation, StringRef>>
 getCommentsInRange(ASTContext *Ctx, CharSourceRange Range) {
   std::vector<std::pair<SourceLocation, StringRef>> Comments;
   auto &SM = Ctx->getSourceManager();
-  std::pair<FileID, unsigned> BeginLoc = SM.getDecomposedLoc(Range.getBegin()),
-                              EndLoc = SM.getDecomposedLoc(Range.getEnd());
+  const std::pair<FileID, unsigned> BeginLoc =
+                                        SM.getDecomposedLoc(Range.getBegin()),
+                                    EndLoc =
+                                        SM.getDecomposedLoc(Range.getEnd());
 
   if (BeginLoc.first != EndLoc.first)
     return Comments;
 
   bool Invalid = false;
-  StringRef Buffer = SM.getBufferData(BeginLoc.first, &Invalid);
+  const StringRef Buffer = SM.getBufferData(BeginLoc.first, &Invalid);
   if (Invalid)
     return Comments;
 
@@ -106,7 +108,7 @@ getCommentsInRange(ASTContext *Ctx, CharSourceRange Range) {
       break;
 
     if (Tok.is(tok::comment)) {
-      std::pair<FileID, unsigned> CommentLoc =
+      const std::pair<FileID, unsigned> CommentLoc =
           SM.getDecomposedLoc(Tok.getLocation());
       assert(CommentLoc.first == BeginLoc.first);
       Comments.emplace_back(
@@ -125,7 +127,7 @@ static std::vector<std::pair<SourceLocation, StringRef>>
 getCommentsBeforeLoc(ASTContext *Ctx, SourceLocation Loc) {
   std::vector<std::pair<SourceLocation, StringRef>> Comments;
   while (Loc.isValid()) {
-    clang::Token Tok = utils::lexer::getPreviousToken(
+    const clang::Token Tok = utils::lexer::getPreviousToken(
         Loc, Ctx->getSourceManager(), Ctx->getLangOpts(),
         /*SkipComments=*/false);
     if (Tok.isNot(tok::comment))
@@ -142,11 +144,11 @@ getCommentsBeforeLoc(ASTContext *Ctx, SourceLocation Loc) {
 
 static bool isLikelyTypo(llvm::ArrayRef<ParmVarDecl *> Params,
                          StringRef ArgName, unsigned ArgIndex) {
-  std::string ArgNameLowerStr = ArgName.lower();
-  StringRef ArgNameLower = ArgNameLowerStr;
+  const std::string ArgNameLowerStr = ArgName.lower();
+  const StringRef ArgNameLower = ArgNameLowerStr;
   // The threshold is arbitrary.
-  unsigned UpperBound = ((ArgName.size() + 2) / 3) + 1;
-  unsigned ThisED = ArgNameLower.edit_distance(
+  const unsigned UpperBound = ((ArgName.size() + 2) / 3) + 1;
+  const unsigned ThisED = ArgNameLower.edit_distance(
       Params[ArgIndex]->getIdentifier()->getName().lower(),
       /*AllowReplacements=*/true, UpperBound);
   if (ThisED >= UpperBound)
@@ -155,17 +157,17 @@ static bool isLikelyTypo(llvm::ArrayRef<ParmVarDecl *> Params,
   for (unsigned I = 0, E = Params.size(); I != E; ++I) {
     if (I == ArgIndex)
       continue;
-    IdentifierInfo *II = Params[I]->getIdentifier();
+    const IdentifierInfo *II = Params[I]->getIdentifier();
     if (!II)
       continue;
 
     const unsigned Threshold = 2;
     // Other parameters must be an edit distance at least Threshold more away
     // from this parameter. This gives us greater confidence that this is a
     // typo of this parameter and not one with a similar name.
-    unsigned OtherED = ArgNameLower.edit_distance(II->getName().lower(),
-                                                  /*AllowReplacements=*/true,
-                                                  ThisED + Threshold);
+    const unsigned OtherED = ArgNameLower.edit_distance(
+        II->getName().lower(),
+        /*AllowReplacements=*/true, ThisED + Threshold);
     if (OtherED < ThisED + Threshold)
       return false;
   }
@@ -267,7 +269,8 @@ void ArgumentCommentCheck::checkCallArgs(ASTContext *Ctx,
     return;
 
   Callee = Callee->getFirstDecl();
-  unsigned NumArgs = std::min<unsigned>(Args.size(), Callee->getNumParams());
+  const unsigned NumArgs =
+      std::min<unsigned>(Args.size(), Callee->getNumParams());
   if ((NumArgs == 0) || (IgnoreSingleArgument && NumArgs == 1))
     return;
 
@@ -279,7 +282,7 @@ void ArgumentCommentCheck::checkCallArgs(ASTContext *Ctx,
 
   for (unsigned I = 0; I < NumArgs; ++I) {
     const ParmVarDecl *PVD = Callee->getParamDecl(I);
-    IdentifierInfo *II = PVD->getIdentifier();
+    const IdentifierInfo *II = PVD->getIdentifier();
     if (!II)
       continue;
     if (FunctionDecl *Template = Callee->getTemplateInstantiationPattern()) {
@@ -293,7 +296,7 @@ void ArgumentCommentCheck::checkCallArgs(ASTContext *Ctx,
       }
     }
 
-    CharSourceRange BeforeArgument =
+    const CharSourceRange BeforeArgument =
         MakeFileCharRange(ArgBeginLoc, Args[I]->getBeginLoc());
     ArgBeginLoc = Args[I]->getEndLoc();
 
@@ -302,7 +305,7 @@ void ArgumentCommentCheck::checkCallArgs(ASTContext *Ctx,
       Comments = getCommentsInRange(Ctx, BeforeArgument);
     } else {
       // Fall back to parsing back from the start of the argument.
-      CharSourceRange ArgsRange =
+      const CharSourceRange ArgsRange =
           MakeFileCharRange(Args[I]->getBeginLoc(), Args[I]->getEndLoc());
       Comments = getCommentsBeforeLoc(Ctx, ArgsRange.getBegin());
     }
@@ -312,7 +315,7 @@ void ArgumentCommentCheck::checkCallArgs(ASTContext *Ctx,
       if (IdentRE.match(Comment.second, &Matches) &&
           !sameName(Matches[2], II->getName(), StrictMode)) {
         {
-          DiagnosticBuilder Diag =
+          const DiagnosticBuilder Diag =
               diag(Comment.first, "argument name '%0' in comment does not "
                                   "match parameter name %1")
               << Matches[2] << II;
@@ -332,9 +335,9 @@ void ArgumentCommentCheck::checkCallArgs(ASTContext *Ctx,
 
     // If the argument comments are missing for literals add them.
     if (Comments.empty() && shouldAddComment(Args[I])) {
-      std::string ArgComment =
+      const std::string ArgComment =
           (llvm::Twine("/*") + II->getName() + "=*/").str();
-      DiagnosticBuilder Diag =
+      const DiagnosticBuilder Diag =
           diag(Args[I]->getBeginLoc(),
                "argument comment missing for literal argument %0")
           << II

clang-tools-extra/clang-tidy/bugprone/AssertSideEffectCheck.cpp

@@ -29,7 +29,7 @@ AST_MATCHER_P2(Expr, hasSideEffect, bool, CheckFunctionCalls,
   const Expr *E = &Node;
 
   if (const auto *Op = dyn_cast<UnaryOperator>(E)) {
-    UnaryOperator::Opcode OC = Op->getOpcode();
+    const UnaryOperator::Opcode OC = Op->getOpcode();
     return OC == UO_PostInc || OC == UO_PostDec || OC == UO_PreInc ||
            OC == UO_PreDec;
   }
@@ -44,7 +44,7 @@ AST_MATCHER_P2(Expr, hasSideEffect, bool, CheckFunctionCalls,
       if (MethodDecl->isConst())
         return false;
 
-    OverloadedOperatorKind OpKind = OpCallExpr->getOperator();
+    const OverloadedOperatorKind OpKind = OpCallExpr->getOperator();
     return OpKind == OO_Equal || OpKind == OO_PlusEqual ||
            OpKind == OO_MinusEqual || OpKind == OO_StarEqual ||
            OpKind == OO_SlashEqual || OpKind == OO_AmpEqual ||
@@ -130,7 +130,7 @@ void AssertSideEffectCheck::check(const MatchFinder::MatchResult &Result) {
 
   StringRef AssertMacroName;
   while (Loc.isValid() && Loc.isMacroID()) {
-    StringRef MacroName = Lexer::getImmediateMacroName(Loc, SM, LangOpts);
+    const StringRef MacroName = Lexer::getImmediateMacroName(Loc, SM, LangOpts);
     Loc = SM.getImmediateMacroCallerLoc(Loc);
 
     // Check if this macro is an assert.

clang-tools-extra/clang-tidy/bugprone/AssignmentInIfConditionCheck.cpp

@@ -66,7 +66,7 @@ void AssignmentInIfConditionCheck::check(
 }
 
 void AssignmentInIfConditionCheck::report(const Expr *AssignmentExpr) {
-  SourceLocation OpLoc =
+  const SourceLocation OpLoc =
       isa<BinaryOperator>(AssignmentExpr)
           ? cast<BinaryOperator>(AssignmentExpr)->getOperatorLoc()
           : cast<CXXOperatorCallExpr>(AssignmentExpr)->getOperatorLoc();

clang-tools-extra/clang-tidy/bugprone/BadSignalToKillThreadCheck.cpp

@@ -40,7 +40,7 @@ void BadSignalToKillThreadCheck::check(const MatchFinder::MatchResult &Result) {
     const Token &T = MI->tokens().back();
     if (!T.isLiteral() || !T.getLiteralData())
       return std::nullopt;
-    StringRef ValueStr = StringRef(T.getLiteralData(), T.getLength());
+    const StringRef ValueStr = StringRef(T.getLiteralData(), T.getLength());
 
     llvm::APInt IntValue;
     constexpr unsigned AutoSenseRadix = 0;

clang-tools-extra/clang-tidy/bugprone/BranchCloneCheck.cpp

@@ -281,8 +281,8 @@ static bool isIdenticalStmt(const ASTContext &Ctx, const Stmt *Stmt1,
     const auto *IntLit1 = cast<IntegerLiteral>(Stmt1);
     const auto *IntLit2 = cast<IntegerLiteral>(Stmt2);
 
-    llvm::APInt I1 = IntLit1->getValue();
-    llvm::APInt I2 = IntLit2->getValue();
+    const llvm::APInt I1 = IntLit1->getValue();
+    const llvm::APInt I2 = IntLit2->getValue();
     if (I1.getBitWidth() != I2.getBitWidth())
       return false;
     return I1 == I2;
@@ -352,7 +352,7 @@ void BranchCloneCheck::check(const MatchFinder::MatchResult &Result) {
       }
     }
 
-    size_t N = Branches.size();
+    const size_t N = Branches.size();
     llvm::BitVector KnownAsClone(N);
 
     for (size_t I = 0; I + 1 < N; I++) {
@@ -375,7 +375,7 @@ void BranchCloneCheck::check(const MatchFinder::MatchResult &Result) {
           // We report the first occurrence only when we find the second one.
           diag(Branches[I]->getBeginLoc(),
                "repeated branch body in conditional chain");
-          SourceLocation End =
+          const SourceLocation End =
               Lexer::getLocForEndOfToken(Branches[I]->getEndLoc(), 0,
                                          *Result.SourceManager, getLangOpts());
           if (End.isValid()) {

clang-tools-extra/clang-tidy/bugprone/CopyConstructorInitCheck.cpp

@@ -31,7 +31,7 @@ void CopyConstructorInitCheck::registerMatchers(MatchFinder *Finder) {
 
 void CopyConstructorInitCheck::check(const MatchFinder::MatchResult &Result) {
   const auto *Ctor = Result.Nodes.getNodeAs<CXXConstructorDecl>("ctor");
-  std::string ParamName = Ctor->getParamDecl(0)->getNameAsString();
+  const std::string ParamName = Ctor->getParamDecl(0)->getNameAsString();
 
   // We want only one warning (and FixIt) for each ctor.
   std::string FixItInitList;
@@ -40,7 +40,7 @@ void CopyConstructorInitCheck::check(const MatchFinder::MatchResult &Result) {
   bool HasWrittenInitializer = false;
   SmallVector<FixItHint, 2> SafeFixIts;
   for (const auto *Init : Ctor->inits()) {
-    bool CtorInitIsWritten = Init->isWritten();
+    const bool CtorInitIsWritten = Init->isWritten();
     HasWrittenInitializer = HasWrittenInitializer || CtorInitIsWritten;
     if (!Init->isBaseInitializer())
       continue;

clang-tools-extra/clang-tidy/bugprone/CrtpConstructorAccessibilityCheck.cpp

@@ -116,9 +116,10 @@ void CrtpConstructorAccessibilityCheck::check(
   assert(DerivedTemplateParameter &&
          "No template parameter corresponds to the derived class of the CRTP.");
 
-  bool NeedsFriend = !isDerivedParameterBefriended(CRTPDeclaration,
-                                                   DerivedTemplateParameter) &&
-                     !isDerivedClassBefriended(CRTPDeclaration, DerivedRecord);
+  const bool NeedsFriend =
+      !isDerivedParameterBefriended(CRTPDeclaration,
+                                    DerivedTemplateParameter) &&
+      !isDerivedClassBefriended(CRTPDeclaration, DerivedRecord);
 
   const FixItHint HintFriend = FixItHint::CreateInsertion(
       CRTPDeclaration->getBraceRange().getEnd(),

clang-tools-extra/clang-tidy/bugprone/DefaultOperatorNewOnOveralignedTypeCheck.cpp

@@ -26,7 +26,7 @@ void DefaultOperatorNewOnOveralignedTypeCheck::check(
   // Get the found 'new' expression.
   const auto *NewExpr = Result.Nodes.getNodeAs<CXXNewExpr>("new");
 
-  QualType T = NewExpr->getAllocatedType();
+  const QualType T = NewExpr->getAllocatedType();
   // Dependent types do not have fixed alignment.
   if (T->isDependentType())
     return;
@@ -35,25 +35,25 @@ void DefaultOperatorNewOnOveralignedTypeCheck::check(
   if (!D || !D->isCompleteDefinition())
     return;
 
-  ASTContext &Context = D->getASTContext();
+  const ASTContext &Context = D->getASTContext();
 
   // Check if no alignment was specified for the type.
   if (!Context.isAlignmentRequired(T))
     return;
 
   // The user-specified alignment (in bits).
-  unsigned SpecifiedAlignment = D->getMaxAlignment();
+  const unsigned SpecifiedAlignment = D->getMaxAlignment();
   // Double-check if no alignment was specified.
   if (!SpecifiedAlignment)
     return;
   // The alignment used by default 'operator new' (in bits).
-  unsigned DefaultNewAlignment = Context.getTargetInfo().getNewAlign();
+  const unsigned DefaultNewAlignment = Context.getTargetInfo().getNewAlign();
 
-  bool OverAligned = SpecifiedAlignment > DefaultNewAlignment;
-  bool HasDefaultOperatorNew =
+  const bool OverAligned = SpecifiedAlignment > DefaultNewAlignment;
+  const bool HasDefaultOperatorNew =
       !NewExpr->getOperatorNew() || NewExpr->getOperatorNew()->isImplicit();
 
-  unsigned CharWidth = Context.getTargetInfo().getCharWidth();
+  const unsigned CharWidth = Context.getTargetInfo().getCharWidth();
   if (HasDefaultOperatorNew && OverAligned)
     diag(NewExpr->getBeginLoc(),
          "allocation function returns a pointer with alignment %0 but the "

clang-tools-extra/clang-tidy/bugprone/DerivedMethodShadowingBaseMethodCheck.cpp

@@ -65,7 +65,7 @@ AST_MATCHER(CXXMethodDecl, nameCollidesWithMethodInBase) {
 
       for (const auto &BaseMethod : CurrentRecord->methods()) {
         if (namesCollide(*BaseMethod, Node)) {
-          ast_matchers::internal::BoundNodesTreeBuilder Result(*Builder);
+          const ast_matchers::internal::BoundNodesTreeBuilder Result(*Builder);
           Builder->setBinding("base_method",
                               clang::DynTypedNode::create(*BaseMethod));
           return true;

clang-tools-extra/clang-tidy/bugprone/DynamicStaticInitializersCheck.cpp

@@ -43,7 +43,7 @@ void DynamicStaticInitializersCheck::registerMatchers(MatchFinder *Finder) {
 void DynamicStaticInitializersCheck::check(
     const MatchFinder::MatchResult &Result) {
   const auto *Var = Result.Nodes.getNodeAs<VarDecl>("var");
-  SourceLocation Loc = Var->getLocation();
+  const SourceLocation Loc = Var->getLocation();
   if (!Loc.isValid() || !utils::isPresumedLocInHeaderFile(
                             Loc, *Result.SourceManager, HeaderFileExtensions))
     return;