[clang-tools-extra] [clang-tidy][NFC] Make a few `std::string`s into `StringRef`s (PR #160961)

[Victor Chernyakin via cfe-commits]

https://github.com/localspook created https://github.com/llvm/llvm-project/pull/160961

Following up 12cb540. Also, that commit left behind a few cases where a temporary `StringRef` was being constructed from those variables just to use its `.split()` function, so this PR cleans those up too.

>From 51f32e35fd25dd14cc5314bf3c2ec67bfc6398f5 Mon Sep 17 00:00:00 2001
From: Victor Chernyakin <chernyakin.victor.j at outlook.com>
Date: Fri, 26 Sep 2025 14:22:24 -0700
Subject: [PATCH] [clang-tidy][NFC] Remove a few redundant temporary
 `StringRef`s

---
 .../android/ComparisonInTempFailureRetryCheck.cpp           | 2 +-
 .../clang-tidy/bugprone/AssertSideEffectCheck.cpp           | 2 +-
 .../clang-tidy/bugprone/ExceptionEscapeCheck.cpp            | 6 +++---
 .../clang-tidy/bugprone/ExceptionEscapeCheck.h              | 4 ++--
 .../clang-tidy/cert/ProperlySeededRandomGeneratorCheck.cpp  | 2 +-
 .../clang-tidy/cert/ProperlySeededRandomGeneratorCheck.h    | 2 +-
 clang-tools-extra/clang-tidy/modernize/UseNullptrCheck.cpp  | 2 +-
 .../clang-tidy/openmp/ExceptionEscapeCheck.cpp              | 2 +-
 clang-tools-extra/clang-tidy/openmp/ExceptionEscapeCheck.h  | 2 +-
 9 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/clang-tools-extra/clang-tidy/android/ComparisonInTempFailureRetryCheck.cpp b/clang-tools-extra/clang-tidy/android/ComparisonInTempFailureRetryCheck.cpp
index 78e58bccaeba1..36ac9a44695c9 100644
--- a/clang-tools-extra/clang-tidy/android/ComparisonInTempFailureRetryCheck.cpp
+++ b/clang-tools-extra/clang-tidy/android/ComparisonInTempFailureRetryCheck.cpp
@@ -19,7 +19,7 @@ ComparisonInTempFailureRetryCheck::ComparisonInTempFailureRetryCheck(
     StringRef Name, ClangTidyContext *Context)
     : ClangTidyCheck(Name, Context),
       RawRetryList(Options.get("RetryMacros", "TEMP_FAILURE_RETRY")) {
-  StringRef(RawRetryList).split(RetryMacros, ",", -1, false);
+  RawRetryList.split(RetryMacros, ",", -1, false);
 }
 
 void ComparisonInTempFailureRetryCheck::storeOptions(
diff --git a/clang-tools-extra/clang-tidy/bugprone/AssertSideEffectCheck.cpp b/clang-tools-extra/clang-tidy/bugprone/AssertSideEffectCheck.cpp
index 227641d73885e..170050247014a 100644
--- a/clang-tools-extra/clang-tidy/bugprone/AssertSideEffectCheck.cpp
+++ b/clang-tools-extra/clang-tidy/bugprone/AssertSideEffectCheck.cpp
@@ -92,7 +92,7 @@ AssertSideEffectCheck::AssertSideEffectCheck(StringRef Name,
       RawAssertList(Options.get("AssertMacros", "assert,NSAssert,NSCAssert")),
       IgnoredFunctions(utils::options::parseListPair(
           "__builtin_expect;", Options.get("IgnoredFunctions", ""))) {
-  StringRef(RawAssertList).split(AssertMacros, ",", -1, false);
+  RawAssertList.split(AssertMacros, ",", -1, false);
 }
 
 // The options are explained in AssertSideEffectCheck.h.
diff --git a/clang-tools-extra/clang-tidy/bugprone/ExceptionEscapeCheck.cpp b/clang-tools-extra/clang-tidy/bugprone/ExceptionEscapeCheck.cpp
index 3d839b5111cc8..837a86ff8655e 100644
--- a/clang-tools-extra/clang-tidy/bugprone/ExceptionEscapeCheck.cpp
+++ b/clang-tools-extra/clang-tidy/bugprone/ExceptionEscapeCheck.cpp
@@ -39,12 +39,12 @@ ExceptionEscapeCheck::ExceptionEscapeCheck(StringRef Name,
       RawIgnoredExceptions(Options.get("IgnoredExceptions", "")) {
   llvm::SmallVector<StringRef, 8> FunctionsThatShouldNotThrowVec,
       IgnoredExceptionsVec;
-  StringRef(RawFunctionsThatShouldNotThrow)
-      .split(FunctionsThatShouldNotThrowVec, ",", -1, false);
+  RawFunctionsThatShouldNotThrow.split(FunctionsThatShouldNotThrowVec, ",", -1,
+                                       false);
   FunctionsThatShouldNotThrow.insert_range(FunctionsThatShouldNotThrowVec);
 
   llvm::StringSet<> IgnoredExceptions;
-  StringRef(RawIgnoredExceptions).split(IgnoredExceptionsVec, ",", -1, false);
+  RawIgnoredExceptions.split(IgnoredExceptionsVec, ",", -1, false);
   IgnoredExceptions.insert_range(IgnoredExceptionsVec);
   Tracer.ignoreExceptions(std::move(IgnoredExceptions));
   Tracer.ignoreBadAlloc(true);
diff --git a/clang-tools-extra/clang-tidy/bugprone/ExceptionEscapeCheck.h b/clang-tools-extra/clang-tidy/bugprone/ExceptionEscapeCheck.h
index 974b07c42407d..a5439448c947b 100644
--- a/clang-tools-extra/clang-tidy/bugprone/ExceptionEscapeCheck.h
+++ b/clang-tools-extra/clang-tidy/bugprone/ExceptionEscapeCheck.h
@@ -33,8 +33,8 @@ class ExceptionEscapeCheck : public ClangTidyCheck {
   void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
 
 private:
-  std::string RawFunctionsThatShouldNotThrow;
-  std::string RawIgnoredExceptions;
+  StringRef RawFunctionsThatShouldNotThrow;
+  StringRef RawIgnoredExceptions;
 
   llvm::StringSet<> FunctionsThatShouldNotThrow;
   utils::ExceptionAnalyzer Tracer;
diff --git a/clang-tools-extra/clang-tidy/cert/ProperlySeededRandomGeneratorCheck.cpp b/clang-tools-extra/clang-tidy/cert/ProperlySeededRandomGeneratorCheck.cpp
index aa95fadb0290b..b8bca7286ce69 100644
--- a/clang-tools-extra/clang-tidy/cert/ProperlySeededRandomGeneratorCheck.cpp
+++ b/clang-tools-extra/clang-tidy/cert/ProperlySeededRandomGeneratorCheck.cpp
@@ -20,7 +20,7 @@ ProperlySeededRandomGeneratorCheck::ProperlySeededRandomGeneratorCheck(
     : ClangTidyCheck(Name, Context),
       RawDisallowedSeedTypes(
           Options.get("DisallowedSeedTypes", "time_t,std::time_t")) {
-  StringRef(RawDisallowedSeedTypes).split(DisallowedSeedTypes, ',');
+  RawDisallowedSeedTypes.split(DisallowedSeedTypes, ',');
 }
 
 void ProperlySeededRandomGeneratorCheck::storeOptions(
diff --git a/clang-tools-extra/clang-tidy/cert/ProperlySeededRandomGeneratorCheck.h b/clang-tools-extra/clang-tidy/cert/ProperlySeededRandomGeneratorCheck.h
index d34b8e702f670..b531ce62d735f 100644
--- a/clang-tools-extra/clang-tidy/cert/ProperlySeededRandomGeneratorCheck.h
+++ b/clang-tools-extra/clang-tidy/cert/ProperlySeededRandomGeneratorCheck.h
@@ -33,7 +33,7 @@ class ProperlySeededRandomGeneratorCheck : public ClangTidyCheck {
   void checkSeed(const ast_matchers::MatchFinder::MatchResult &Result,
                  const T *Func);
 
-  std::string RawDisallowedSeedTypes;
+  StringRef RawDisallowedSeedTypes;
   SmallVector<StringRef, 5> DisallowedSeedTypes;
 };
 
diff --git a/clang-tools-extra/clang-tidy/modernize/UseNullptrCheck.cpp b/clang-tools-extra/clang-tidy/modernize/UseNullptrCheck.cpp
index 4dc4baecddd50..34089479e3789 100644
--- a/clang-tools-extra/clang-tidy/modernize/UseNullptrCheck.cpp
+++ b/clang-tools-extra/clang-tidy/modernize/UseNullptrCheck.cpp
@@ -494,7 +494,7 @@ UseNullptrCheck::UseNullptrCheck(StringRef Name, ClangTidyContext *Context)
       NullMacrosStr(Options.get("NullMacros", "NULL")),
       IgnoredTypes(utils::options::parseStringList(Options.get(
           "IgnoredTypes", "_CmpUnspecifiedParam;^std::__cmp_cat::__unspec"))) {
-  StringRef(NullMacrosStr).split(NullMacros, ",");
+  NullMacrosStr.split(NullMacros, ",");
 }
 
 void UseNullptrCheck::storeOptions(ClangTidyOptions::OptionMap &Opts) {
diff --git a/clang-tools-extra/clang-tidy/openmp/ExceptionEscapeCheck.cpp b/clang-tools-extra/clang-tidy/openmp/ExceptionEscapeCheck.cpp
index f9becee92e148..3801fc0f420e5 100644
--- a/clang-tools-extra/clang-tidy/openmp/ExceptionEscapeCheck.cpp
+++ b/clang-tools-extra/clang-tidy/openmp/ExceptionEscapeCheck.cpp
@@ -23,7 +23,7 @@ ExceptionEscapeCheck::ExceptionEscapeCheck(StringRef Name,
   llvm::SmallVector<StringRef, 8> IgnoredExceptionsVec;
 
   llvm::StringSet<> IgnoredExceptions;
-  StringRef(RawIgnoredExceptions).split(IgnoredExceptionsVec, ",", -1, false);
+  RawIgnoredExceptions.split(IgnoredExceptionsVec, ",", -1, false);
   llvm::transform(IgnoredExceptionsVec, IgnoredExceptionsVec.begin(),
                   [](StringRef S) { return S.trim(); });
   IgnoredExceptions.insert_range(IgnoredExceptionsVec);
diff --git a/clang-tools-extra/clang-tidy/openmp/ExceptionEscapeCheck.h b/clang-tools-extra/clang-tidy/openmp/ExceptionEscapeCheck.h
index 1703f55f902ba..fac89a6b37fee 100644
--- a/clang-tools-extra/clang-tidy/openmp/ExceptionEscapeCheck.h
+++ b/clang-tools-extra/clang-tidy/openmp/ExceptionEscapeCheck.h
@@ -30,7 +30,7 @@ class ExceptionEscapeCheck : public ClangTidyCheck {
   void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
 
 private:
-  std::string RawIgnoredExceptions;
+  StringRef RawIgnoredExceptions;
 
   utils::ExceptionAnalyzer Tracer;
 };