diff --git a/lib/checkautovariables.cpp b/lib/checkautovariables.cpp
index cd5836e80..dcc644fd7 100644
--- a/lib/checkautovariables.cpp
+++ b/lib/checkautovariables.cpp
@@ -118,8 +118,8 @@ static bool variableIsUsedInScope(const Token* start, unsigned int varId, const
 
 void CheckAutoVariables::assignFunctionArg()
 {
-    bool style = _settings->isEnabled("style");
-    bool warning = _settings->isEnabled("warning");
+    const bool style = _settings->isEnabled("style");
+    const bool warning = _settings->isEnabled("warning");
     if (!style && !warning)
         return;
 
diff --git a/lib/checkclass.cpp b/lib/checkclass.cpp
index a934395b4..f4ccc23c6 100644
--- a/lib/checkclass.cpp
+++ b/lib/checkclass.cpp
@@ -979,6 +979,8 @@ static const Scope* findFunctionOf(const Scope* scope)
 
 void CheckClass::checkMemset()
 {
+    const bool printWarnings = _settings->isEnabled("warning");
+
     const std::size_t functions = symbolDatabase->functionScopes.size();
     for (std::size_t i = 0; i < functions; ++i) {
         const Scope * scope = symbolDatabase->functionScopes[i];
@@ -1052,7 +1054,7 @@ void CheckClass::checkMemset()
                 std::list<const Scope *> parsedTypes;
                 checkMemsetType(scope, tok->tokAt(2), tok->variable()->typeScope(), true, parsedTypes);
 
-                if (tok->variable()->typeScope()->numConstructors > 0 && _settings->isEnabled("warning"))
+                if (tok->variable()->typeScope()->numConstructors > 0 && printWarnings)
                     mallocOnClassWarning(tok, tok->strAt(2), tok->variable()->typeScope()->classDef);
             }
         }
@@ -1061,6 +1063,8 @@ void CheckClass::checkMemset()
 
 void CheckClass::checkMemsetType(const Scope *start, const Token *tok, const Scope *type, bool allocation, std::list<const Scope *> parsedTypes)
 {
+    const bool printPortability = _settings->isEnabled("portability");
+
     // If type has been checked there is no need to check it again
     if (std::find(parsedTypes.begin(), parsedTypes.end(), type) != parsedTypes.end())
         return;
@@ -1110,7 +1114,7 @@ void CheckClass::checkMemsetType(const Scope *start, const Token *tok, const Sco
                 checkMemsetType(start, tok, typeScope, allocation, parsedTypes);
 
             // check for float
-            else if (tok->str() == "memset" && var->isFloatingType() && _settings->isEnabled("portability"))
+            else if (tok->str() == "memset" && var->isFloatingType() && printPortability)
                 memsetErrorFloat(tok, type->classDef->str());
         }
     }
diff --git a/lib/checkcondition.cpp b/lib/checkcondition.cpp
index e8c68706c..4edb71b9d 100644
--- a/lib/checkcondition.cpp
+++ b/lib/checkcondition.cpp
@@ -584,8 +584,8 @@ template<class T> static T getvalue(const int test, const T value1, const T valu
 
 void CheckCondition::checkIncorrectLogicOperator()
 {
-    bool style = _settings->isEnabled("style");
-    bool warning = _settings->isEnabled("warning");
+    const bool style = _settings->isEnabled("style");
+    const bool warning = _settings->isEnabled("warning");
     if (!style && !warning)
         return;
 
diff --git a/lib/checkio.cpp b/lib/checkio.cpp
index 8886f8226..86050cb8f 100644
--- a/lib/checkio.cpp
+++ b/lib/checkio.cpp
@@ -100,6 +100,8 @@ void CheckIO::checkFileUsage()
     };
     static const std::set<std::string> whitelist(_whitelist, _whitelist + sizeof(_whitelist)/sizeof(*_whitelist));
     const bool windows = _settings->isWindowsPlatform();
+    const bool printPortability = _settings->isEnabled("portability");
+    const bool printWarnings = _settings->isEnabled("warning");
 
     std::map<unsigned int, Filepointer> filepointers;
 
@@ -179,7 +181,7 @@ void CheckIO::checkFileUsage()
                     operation = Filepointer::OPEN;
                 } else if ((tok->str() == "rewind" || tok->str() == "fseek" || tok->str() == "fsetpos" || tok->str() == "fflush") ||
                            (windows && tok->str() == "_fseeki64")) {
-                    if (_settings->isEnabled("portability") && tok->str() == "fflush") {
+                    if (printPortability && tok->str() == "fflush") {
                         fileTok = tok->tokAt(2);
                         if (fileTok) {
                             if (fileTok->str() == "stdin")
@@ -270,7 +272,7 @@ void CheckIO::checkFileUsage()
                 case Filepointer::POSITIONING:
                     if (f.mode == CLOSED)
                         useClosedFileError(tok);
-                    else if (f.append_mode == Filepointer::APPEND && tok->str() != "fflush" && _settings->isEnabled("warning"))
+                    else if (f.append_mode == Filepointer::APPEND && tok->str() != "fflush" && printWarnings)
                         seekOnAppendedFileError(tok);
                     break;
                 case Filepointer::READ:
diff --git a/lib/checknullpointer.cpp b/lib/checknullpointer.cpp
index 88185a87b..b3bab8c3e 100644
--- a/lib/checknullpointer.cpp
+++ b/lib/checknullpointer.cpp
@@ -308,6 +308,8 @@ void CheckNullPointer::nullPointerLinkedList()
 
 void CheckNullPointer::nullPointerByDeRefAndChec()
 {
+    const bool printWarnings = _settings->isEnabled("warning");
+
     for (const Token *tok = _tokenizer->tokens(); tok; tok = tok->next()) {
         const Variable *var = tok->variable();
         if (!var || !var->isPointer() || tok == var->nameToken())
@@ -336,7 +338,7 @@ void CheckNullPointer::nullPointerByDeRefAndChec()
             if (std::find(varlist.begin(), varlist.end(), tok) != varlist.end()) {
                 if (value->condition == nullptr)
                     nullPointerError(tok, tok->str(), false, value->defaultArg);
-                else if (_settings->isEnabled("warning"))
+                else if (printWarnings)
                     nullPointerError(tok, tok->str(), value->condition, value->inconclusive);
             }
             continue;
@@ -356,7 +358,7 @@ void CheckNullPointer::nullPointerByDeRefAndChec()
 
         if (value->condition == nullptr)
             nullPointerError(tok, tok->str(), value->inconclusive, value->defaultArg);
-        else if (_settings->isEnabled("warning"))
+        else if (printWarnings)
             nullPointerError(tok, tok->str(), value->condition, value->inconclusive);
     }
 }
diff --git a/lib/checkother.cpp b/lib/checkother.cpp
index 7906229dc..3ef8d65b7 100644
--- a/lib/checkother.cpp
+++ b/lib/checkother.cpp
@@ -1785,6 +1785,8 @@ void CheckOther::constStatementError(const Token *tok, const std::string &type)
 //---------------------------------------------------------------------------
 void CheckOther::checkZeroDivision()
 {
+    const bool printWarnings = _settings->isEnabled("warning");
+
     for (const Token *tok = _tokenizer->tokens(); tok; tok = tok->next()) {
         if (Token::Match(tok, "div|ldiv|lldiv|imaxdiv ( %num% , %num% )") &&
             MathLib::isInt(tok->strAt(4)) &&
@@ -1804,7 +1806,7 @@ void CheckOther::checkZeroDivision()
                     continue;
                 if (value->condition == nullptr)
                     zerodivError(tok, value->inconclusive);
-                else if (_settings->isEnabled("warning"))
+                else if (printWarnings)
                     zerodivcondError(value->condition,tok,value->inconclusive);
             }
         }
@@ -1872,7 +1874,7 @@ void CheckOther::nanInArithmeticExpressionError(const Token *tok)
 void CheckOther::checkMathFunctions()
 {
     bool styleC99 = _settings->isEnabled("style") && _settings->standards.c != Standards::C89 && _settings->standards.cpp != Standards::CPP03;
-    bool printWarnings = _settings->isEnabled("warning");
+    const bool printWarnings = _settings->isEnabled("warning");
 
     const SymbolDatabase *symbolDatabase = _tokenizer->getSymbolDatabase();
     const std::size_t functions = symbolDatabase->functionScopes.size();
@@ -2553,8 +2555,8 @@ void CheckOther::checkIncompleteArrayFill()
 {
     if (!_settings->inconclusive)
         return;
-    bool warning = _settings->isEnabled("warning");
-    bool portability = _settings->isEnabled("portability");
+    const bool warning = _settings->isEnabled("warning");
+    const bool portability = _settings->isEnabled("portability");
     if (!portability && !warning)
         return;
 
diff --git a/lib/checkstl.cpp b/lib/checkstl.cpp
index d0afcab88..a6cbbb513 100644
--- a/lib/checkstl.cpp
+++ b/lib/checkstl.cpp
@@ -1238,6 +1238,7 @@ void CheckStl::checkAutoPointer()
     std::map<unsigned int, const std::string> mallocVarId; // variables allocated by the malloc-like function
     static const char STL_CONTAINER_LIST[] = "array|bitset|deque|list|forward_list|map|multimap|multiset|priority_queue|queue|set|stack|vector|hash_map|hash_multimap|hash_set|unordered_map|unordered_multimap|unordered_set|unordered_multiset|basic_string";
     const int malloc = _settings->library.alloc("malloc"); // allocation function, which are not compatible with auto_ptr
+    const bool printStyle = _settings->isEnabled("style");
 
     for (const Token *tok = _tokenizer->tokens(); tok; tok = tok->next()) {
         if (Token::simpleMatch(tok, "auto_ptr <")) {
@@ -1284,7 +1285,7 @@ void CheckStl::checkAutoPointer()
             }
         } else {
             if (Token::Match(tok, "%name% = %var% ;")) {
-                if (_settings->isEnabled("style")) {
+                if (printStyle) {
                     std::set<unsigned int>::const_iterator iter = autoPtrVarId.find(tok->tokAt(2)->varId());
                     if (iter != autoPtrVarId.end()) {
                         autoPointerError(tok->tokAt(2));
diff --git a/lib/checktype.cpp b/lib/checktype.cpp
index a5921fcd5..639464893 100644
--- a/lib/checktype.cpp
+++ b/lib/checktype.cpp
@@ -99,6 +99,8 @@ static bool astGetSizeSign(const Settings *settings, const Token *tok, unsigned
 
 void CheckType::checkTooBigBitwiseShift()
 {
+    const bool printWarnings = _settings->isEnabled("warning");
+
     // unknown sizeof(int) => can't run this checker
     if (_settings->platformType == Settings::Unspecified)
         return;
@@ -134,7 +136,7 @@ void CheckType::checkTooBigBitwiseShift()
             const ValueFlow::Value *value = tok->astOperand2()->getValueGE(lhsbits, _settings);
             if (!value)
                 continue;
-            if (value->condition && !_settings->isEnabled("warning"))
+            if (value->condition && !printWarnings)
                 continue;
             if (value->inconclusive && !_settings->inconclusive)
                 continue;
diff --git a/lib/checkvaarg.cpp b/lib/checkvaarg.cpp
index 23859b7df..4b8f8b2d7 100644
--- a/lib/checkvaarg.cpp
+++ b/lib/checkvaarg.cpp
@@ -35,6 +35,8 @@ void CheckVaarg::va_start_argument()
 {
     const SymbolDatabase* const symbolDatabase = _tokenizer->getSymbolDatabase();
     const std::size_t functions = symbolDatabase->functionScopes.size();
+    const bool printWarnings = _settings->isEnabled("warning");
+
     for (std::size_t i = 0; i < functions; ++i) {
         const Scope* scope = symbolDatabase->functionScopes[i];
         const Function* function = scope->function;
@@ -48,7 +50,7 @@ void CheckVaarg::va_start_argument()
                 const Variable* var = param2->variable();
                 if (var && var->isReference())
                     referenceAs_va_start_error(param2, var->name());
-                if (var && var->index() + 2 < function->argCount() && _settings->isEnabled("warning")) {
+                if (var && var->index() + 2 < function->argCount() && printWarnings) {
                     std::list<Variable>::const_reverse_iterator it = function->argumentList.rbegin();
                     ++it;
                     wrongParameterTo_va_start_error(tok, var->name(), it->name());
diff --git a/lib/preprocessor.cpp b/lib/preprocessor.cpp
index 36fd044bf..fcd9381d5 100644
--- a/lib/preprocessor.cpp
+++ b/lib/preprocessor.cpp
@@ -2870,6 +2870,8 @@ static bool getlines(std::istream &istr, std::string &line)
 
 bool Preprocessor::validateCfg(const std::string &code, const std::string &cfg)
 {
+    const bool printInformation = (_settings && _settings->isEnabled("information"));
+
     // fill up "macros" with empty configuration macros
     std::set<std::string> macros;
     for (std::string::size_type pos = 0; pos < cfg.size();) {
@@ -2917,7 +2919,7 @@ bool Preprocessor::validateCfg(const std::string &code, const std::string &cfg)
                 if (pos2 < code.size() && (std::isalnum((unsigned char)code[pos2]) || code[pos2] == '_'))
                     continue;
                 // macro is used in code, return false
-                if (_settings && _settings->isEnabled("information"))
+                if (printInformation)
                     validateCfgError(cfg, macro);
                 return false;
             }
diff --git a/lib/tokenize.cpp b/lib/tokenize.cpp
index ed427b357..911dd9902 100644
--- a/lib/tokenize.cpp
+++ b/lib/tokenize.cpp
@@ -7515,6 +7515,7 @@ void Tokenizer::simplifyEnum()
     std::string className;
     int classLevel = 0;
     bool goback = false;
+    const bool printStyle = _settings->isEnabled("style");
     for (Token *tok = list.front(); tok; tok = tok->next()) {
 
         if (goback) {
@@ -7776,7 +7777,7 @@ void Tokenizer::simplifyEnum()
                                         if (prev->str() == "(" && (!Token::Match(prev->tokAt(-2), "%type%|::|*|& %type% (") || prev->strAt(-2) == "else"))
                                             continue;
                                         shadowVars.insert(arg->str());
-                                        if (inScope && _settings->isEnabled("style")) {
+                                        if (inScope && printStyle) {
                                             const EnumValue& enumValue = enumValues.find(arg->str())->second;
                                             duplicateEnumError(arg, enumValue.name, "Function argument");
                                         }
@@ -7796,7 +7797,7 @@ void Tokenizer::simplifyEnum()
                                         (Token::Match(prev->previous(), "%type% *|&") && (prev->previous()->isStandardType() || prev->strAt(-1) == "const" || Token::Match(prev->tokAt(-2), ";|{|}")))) {
                                         // variable declaration?
                                         shadowVars.insert(tok3->str());
-                                        if (inScope && _settings->isEnabled("style")) {
+                                        if (inScope && printStyle) {
                                             const EnumValue& enumValue = enumValues.find(tok3->str())->second;
                                             duplicateEnumError(tok3, enumValue.name, "Variable");
                                         }