[clang-tools-extra] Remove unused local variables (NFC) (llvm#139382)

Author: kazutakahirata

clang-tools-extra/clangd/DumpAST.cpp

@@ -124,7 +124,6 @@ class DumpVisitor : public RecursiveASTVisitor<DumpVisitor> {
     return Result;
   }
   std::string getKind(const TypeLoc &TL) {
-    std::string Result;
     if (TL.getTypeLocClass() == TypeLoc::Qualified)
       return "Qualified";
     return TL.getType()->getTypeClassName();

clang-tools-extra/clangd/unittests/SerializationTests.cpp

@@ -433,7 +433,6 @@ TEST(SerializationTest, NoCrashOnBadStringTableSize) {
   std::string CorruptStri =
       (llvm::fromHex("ffffffff") + Stri->Data.drop_front(4)).str();
   Stri->Data = CorruptStri;
-  std::string FileDigest = llvm::fromHex("EED8F5EAF25C453C");
 
   // Try to crash rather than hang on large allocation.
   ScopedMemoryLimit MemLimit(1000 * 1024 * 1024); // 1GB

clang-tools-extra/include-cleaner/tool/IncludeCleaner.cpp

@@ -344,7 +344,6 @@ mapInputsToAbsPaths(clang::tooling::CompilationDatabase &CDB,
     }
     for (const auto &Cmd : Cmds) {
       llvm::SmallString<256> CDBPath(Cmd.Filename);
-      std::string Directory(Cmd.Directory);
       llvm::sys::fs::make_absolute(Cmd.Directory, CDBPath);
       CDBToAbsPaths[std::string(CDBPath)] = std::string(AbsPath);
     }

clang-tools-extra/modularize/Modularize.cpp

@@ -360,8 +360,6 @@ getModularizeArgumentsAdjuster(DependencyMap &Dependencies) {
     if (int Count = FileDependents.size()) {
       for (int Index = 0; Index < Count; ++Index) {
         NewArgs.push_back("-include");
-        std::string File(std::string("\"") + FileDependents[Index] +
-                         std::string("\""));
         NewArgs.push_back(FileDependents[Index]);
       }
     }

clang-tools-extra/modularize/PreprocessorTracker.cpp

@@ -381,7 +381,6 @@ static std::string getMacroUnexpandedString(clang::SourceRange Range,
   clang::SourceLocation BeginLoc(Range.getBegin());
   const char *BeginPtr = PP.getSourceManager().getCharacterData(BeginLoc);
   size_t Length;
-  std::string Unexpanded;
   if (MI->isFunctionLike()) {
     clang::SourceLocation EndLoc(Range.getEnd());
     const char *EndPtr = PP.getSourceManager().getCharacterData(EndLoc) + 1;
@@ -1328,7 +1327,6 @@ void PreprocessorCallbacks::Defined(const clang::Token &MacroNameTok,
   clang::SourceLocation Loc(Range.getBegin());
   clang::IdentifierInfo *II = MacroNameTok.getIdentifierInfo();
   const clang::MacroInfo *MI = MD.getMacroInfo();
-  std::string MacroName = II->getName().str();
   std::string Unexpanded(getSourceString(PP, Range));
   PPTracker.addMacroExpansionInstance(
       PP, PPTracker.getCurrentHeaderHandle(), Loc,