fixed #6316 (Use std::to_string() in place of MathLib::toString() ...) - deleted default implementation of Mathlib::toString() (#5341)

It was also used inconsistently and seemed to imply there is some
special handling which wasn't the case. It was just an alias for
`std::to_string()` for non-`double` types. So there was no need for it.

---------

Co-authored-by: Robert Reif <reif@earthlink.net>

Author: firewave

lib/astutils.cpp

@@ -341,7 +341,7 @@ static bool match(const Token *tok, const std::string &rhs)
 {
     if (tok->str() == rhs)
         return true;
-    if (!tok->varId() && tok->hasKnownIntValue() && MathLib::toString(tok->values().front().intvalue) == rhs)
+    if (!tok->varId() && tok->hasKnownIntValue() && std::to_string(tok->values().front().intvalue) == rhs)
         return true;
     return false;
 }

lib/checkbufferoverrun.cpp

@@ -119,7 +119,7 @@ static int getMinFormatStringOutputLength(const std::vector<const Token*> &param
                 i_d_x_f_found = true;
                 parameterLength = 1;
                 if (inputArgNr < parameters.size() && parameters[inputArgNr]->hasKnownIntValue())
-                    parameterLength = MathLib::toString(parameters[inputArgNr]->getKnownIntValue()).length();
+                    parameterLength = std::to_string(parameters[inputArgNr]->getKnownIntValue()).length();
 
                 handleNextParameter = true;
                 break;
@@ -362,7 +362,7 @@ void CheckBufferOverrun::arrayIndex()
 static std::string stringifyIndexes(const std::string& array, const std::vector<ValueFlow::Value>& indexValues)
 {
     if (indexValues.size() == 1)
-        return MathLib::toString(indexValues[0].intvalue);
+        return std::to_string(indexValues[0].intvalue);
 
     std::ostringstream ret;
     ret << array;
@@ -383,7 +383,7 @@ static std::string arrayIndexMessage(const Token* tok,
                                      const Token* condition)
 {
     auto add_dim = [](const std::string &s, const Dimension &dim) {
-        return s + "[" + MathLib::toString(dim.num) + "]";
+        return s + "[" + std::to_string(dim.num) + "]";
     };
     const std::string array = std::accumulate(dimensions.cbegin(), dimensions.cend(), tok->astOperand1()->expressionString(), add_dim);
 
@@ -528,7 +528,7 @@ void CheckBufferOverrun::pointerArithmeticError(const Token *tok, const Token *i
 
     std::string errmsg;
     if (indexValue->condition)
-        errmsg = "Undefined behaviour, when '" + indexToken->expressionString() + "' is " + MathLib::toString(indexValue->intvalue) + " the pointer arithmetic '" + tok->expressionString() + "' is out of bounds.";
+        errmsg = "Undefined behaviour, when '" + indexToken->expressionString() + "' is " + std::to_string(indexValue->intvalue) + " the pointer arithmetic '" + tok->expressionString() + "' is out of bounds.";
     else
         errmsg = "Undefined behaviour, pointer arithmetic '" + tok->expressionString() + "' is out of bounds.";
 
@@ -992,13 +992,13 @@ bool CheckBufferOverrun::analyseWholeProgram1(const std::map<std::string, std::l
     if (type == 1) {
         errorId = "ctuArrayIndex";
         if (unsafeUsage.value > 0)
-            errmsg = "Array index out of bounds; '" + unsafeUsage.myArgumentName + "' buffer size is " + MathLib::toString(functionCall->callArgValue) + " and it is accessed at offset " + MathLib::toString(unsafeUsage.value) + ".";
+            errmsg = "Array index out of bounds; '" + unsafeUsage.myArgumentName + "' buffer size is " + std::to_string(functionCall->callArgValue) + " and it is accessed at offset " + std::to_string(unsafeUsage.value) + ".";
         else
-            errmsg = "Array index out of bounds; buffer '" + unsafeUsage.myArgumentName + "' is accessed at offset " + MathLib::toString(unsafeUsage.value) + ".";
+            errmsg = "Array index out of bounds; buffer '" + unsafeUsage.myArgumentName + "' is accessed at offset " + std::to_string(unsafeUsage.value) + ".";
         cwe = (unsafeUsage.value > 0) ? CWE_BUFFER_OVERRUN : CWE_BUFFER_UNDERRUN;
     } else {
         errorId = "ctuPointerArith";
-        errmsg = "Pointer arithmetic overflow; '" + unsafeUsage.myArgumentName + "' buffer size is " + MathLib::toString(functionCall->callArgValue);
+        errmsg = "Pointer arithmetic overflow; '" + unsafeUsage.myArgumentName + "' buffer size is " + std::to_string(functionCall->callArgValue);
         cwe = CWE_POINTER_ARITHMETIC_OVERFLOW;
     }
 

lib/checkclass.cpp

@@ -2845,7 +2845,7 @@ void CheckClass::virtualFunctionCallInConstructorError(
     }
 
     reportError(errorPath, Severity::style, "virtualCallInConstructor",
-                "Virtual function '" + funcname + "' is called from " + scopeFunctionTypeName + " '" + constructorName + "' at line " + MathLib::toString(lineNumber) + ". Dynamic binding is not used.", CWE(0U), Certainty::normal);
+                "Virtual function '" + funcname + "' is called from " + scopeFunctionTypeName + " '" + constructorName + "' at line " + std::to_string(lineNumber) + ". Dynamic binding is not used.", CWE(0U), Certainty::normal);
 }
 
 void CheckClass::pureVirtualFunctionCallInConstructorError(

lib/checkcondition.cpp

@@ -1039,7 +1039,7 @@ static bool parseComparison(const Token *comp, bool &not1, std::string &op, std:
             return false;
         op = invertOperatorForOperandSwap(comp->str());
         if (op1->enumerator() && op1->enumerator()->value_known)
-            value = MathLib::toString(op1->enumerator()->value);
+            value = std::to_string(op1->enumerator()->value);
         else
             value = op1->str();
         expr = op2;
@@ -1048,7 +1048,7 @@ static bool parseComparison(const Token *comp, bool &not1, std::string &op, std:
             return false;
         op = comp->str();
         if (op2->enumerator() && op2->enumerator()->value_known)
-            value = MathLib::toString(op2->enumerator()->value);
+            value = std::to_string(op2->enumerator()->value);
         else
             value = op2->str();
         expr = op1;

lib/checkother.cpp

@@ -3518,7 +3518,7 @@ void CheckOther::funcArgNamesDifferent(const std::string & functionName, nonneg
     std::list<const Token *> tokens = { declaration,definition };
     reportError(tokens, Severity::style, "funcArgNamesDifferent",
                 "$symbol:" + functionName + "\n"
-                "Function '$symbol' argument " + MathLib::toString(index + 1) + " names different: declaration '" +
+                "Function '$symbol' argument " + std::to_string(index + 1) + " names different: declaration '" +
                 (declaration ? declaration->str() : std::string("A")) + "' definition '" +
                 (definition ? definition->str() : std::string("B")) + "'.", CWE628, Certainty::inconclusive);
 }

lib/checkstl.cpp

@@ -203,14 +203,14 @@ void CheckStl::outOfBounds()
 static std::string indexValueString(const ValueFlow::Value& indexValue, const std::string& containerName = emptyString)
 {
     if (indexValue.isIteratorStartValue())
-        return "at position " + MathLib::toString(indexValue.intvalue) + " from the beginning";
+        return "at position " + std::to_string(indexValue.intvalue) + " from the beginning";
     if (indexValue.isIteratorEndValue())
-        return "at position " + MathLib::toString(-indexValue.intvalue) + " from the end";
-    std::string indexString = MathLib::toString(indexValue.intvalue);
+        return "at position " + std::to_string(-indexValue.intvalue) + " from the end";
+    std::string indexString = std::to_string(indexValue.intvalue);
     if (indexValue.isSymbolicValue()) {
         indexString = containerName + ".size()";
         if (indexValue.intvalue != 0)
-            indexString += "+" + MathLib::toString(indexValue.intvalue);
+            indexString += "+" + std::to_string(indexValue.intvalue);
     }
     if (indexValue.bound == ValueFlow::Value::Bound::Lower)
         return "greater or equal to " + indexString;
@@ -242,11 +242,11 @@ void CheckStl::outOfBoundsError(const Token *tok, const std::string &containerNa
             errmsg = "Out of bounds access in expression '" + expression + "' because '$symbol' is empty.";
     } else if (indexValue) {
         if (containerSize->condition)
-            errmsg = ValueFlow::eitherTheConditionIsRedundant(containerSize->condition) + " or $symbol size can be " + MathLib::toString(containerSize->intvalue) + ". Expression '" + expression + "' cause access out of bounds.";
+            errmsg = ValueFlow::eitherTheConditionIsRedundant(containerSize->condition) + " or $symbol size can be " + std::to_string(containerSize->intvalue) + ". Expression '" + expression + "' cause access out of bounds.";
         else if (indexValue->condition)
             errmsg = ValueFlow::eitherTheConditionIsRedundant(indexValue->condition) + " or '" + index + "' can have the value " + indexValueString(*indexValue) + ". Expression '" + expression + "' cause access out of bounds.";
         else
-            errmsg = "Out of bounds access in '" + expression + "', if '$symbol' size is " + MathLib::toString(containerSize->intvalue) + " and '" + index + "' is " + indexValueString(*indexValue);
+            errmsg = "Out of bounds access in '" + expression + "', if '$symbol' size is " + std::to_string(containerSize->intvalue) + " and '" + index + "' is " + indexValueString(*indexValue);
     } else {
         // should not happen
         return;

lib/cppcheck.cpp

@@ -807,7 +807,7 @@ unsigned int CppCheck::checkFile(const std::string& filename, const std::string
             const std::list<Directive> &directives = preprocessor.getDirectives();
             for (const Directive &dir : directives) {
                 if (dir.str.compare(0,8,"#define ") == 0 || dir.str.compare(0,9,"#include ") == 0)
-                    code += "#line " + MathLib::toString(dir.linenr) + " \"" + dir.file + "\"\n" + dir.str + '\n';
+                    code += "#line " + std::to_string(dir.linenr) + " \"" + dir.file + "\"\n" + dir.str + '\n';
             }
             Tokenizer tokenizer2(&mSettings, this);
             std::istringstream istr2(code);
@@ -945,7 +945,7 @@ unsigned int CppCheck::checkFile(const std::string& filename, const std::string
 
             } catch (const simplecpp::Output &o) {
                 // #error etc during preprocessing
-                configurationError.push_back((mCurrentConfig.empty() ? "\'\'" : mCurrentConfig) + " : [" + o.location.file() + ':' + MathLib::toString(o.location.line) + "] " + o.msg);
+                configurationError.push_back((mCurrentConfig.empty() ? "\'\'" : mCurrentConfig) + " : [" + o.location.file() + ':' + std::to_string(o.location.line) + "] " + o.msg);
                 --checkCount; // don't count invalid configurations
                 continue;
 

lib/ctu.cpp

@@ -59,7 +59,7 @@ int CTU::maxCtuDepth = 2;
 
 std::string CTU::getFunctionId(const Tokenizer *tokenizer, const Function *function)
 {
-    return tokenizer->list.file(function->tokenDef) + ':' + MathLib::toString(function->tokenDef->linenr()) + ':' + MathLib::toString(function->tokenDef->column());
+    return tokenizer->list.file(function->tokenDef) + ':' + std::to_string(function->tokenDef->linenr()) + ':' + std::to_string(function->tokenDef->column());
 }
 
 CTU::FileInfo::Location::Location(const Tokenizer *tokenizer, const Token *tok)
@@ -579,7 +579,7 @@ std::list<ErrorMessage::FileLocation> CTU::FileInfo::getErrorPath(InvalidValueTy
         }
 
         ErrorMessage::FileLocation fileLoc(path[index]->location.fileName, path[index]->location.lineNumber, path[index]->location.column);
-        fileLoc.setinfo("Calling function " + path[index]->callFunctionName + ", " + MathLib::toString(path[index]->callArgNr) + getOrdinalText(path[index]->callArgNr) + " argument is " + value1);
+        fileLoc.setinfo("Calling function " + path[index]->callFunctionName + ", " + std::to_string(path[index]->callArgNr) + getOrdinalText(path[index]->callArgNr) + " argument is " + value1);
         locationList.push_back(std::move(fileLoc));
     }
 

lib/errorlogger.cpp

@@ -240,8 +240,8 @@ std::string ErrorMessage::serialize() const
     std::string oss;
     serializeString(oss, id);
     serializeString(oss, Severity::toString(severity));
-    serializeString(oss, MathLib::toString(cwe.id));
-    serializeString(oss, MathLib::toString(hash));
+    serializeString(oss, std::to_string(cwe.id));
+    serializeString(oss, std::to_string(hash));
     serializeString(oss, file0);
     if (certainty == Certainty::inconclusive) {
         const std::string text("inconclusive");
@@ -461,7 +461,7 @@ std::string ErrorMessage::toXML() const
     if (cwe.id)
         printer.PushAttribute("cwe", cwe.id);
     if (hash)
-        printer.PushAttribute("hash", MathLib::toString(hash).c_str());
+        printer.PushAttribute("hash", std::to_string(hash).c_str());
     if (certainty == Certainty::inconclusive)
         printer.PushAttribute("inconclusive", "true");
 
@@ -624,14 +624,14 @@ std::string ErrorMessage::toString(bool verbose, const std::string &templateForm
         pos1 = result.find("{inconclusive:", pos1);
     }
     findAndReplace(result, "{severity}", Severity::toString(severity));
-    findAndReplace(result, "{cwe}", MathLib::toString(cwe.id));
+    findAndReplace(result, "{cwe}", std::to_string(cwe.id));
     findAndReplace(result, "{message}", verbose ? mVerboseMessage : mShortMessage);
     if (!callStack.empty()) {
         if (result.find("{callstack}") != std::string::npos)
             findAndReplace(result, "{callstack}", ErrorLogger::callStackToString(callStack));
         findAndReplace(result, "{file}", callStack.back().getfile());
-        findAndReplace(result, "{line}", MathLib::toString(callStack.back().line));
-        findAndReplace(result, "{column}", MathLib::toString(callStack.back().column));
+        findAndReplace(result, "{line}", std::to_string(callStack.back().line));
+        findAndReplace(result, "{column}", std::to_string(callStack.back().column));
         if (result.find("{code}") != std::string::npos) {
             const std::string::size_type pos = result.find('\r');
             const char *endl;
@@ -660,8 +660,8 @@ std::string ErrorMessage::toString(bool verbose, const std::string &templateForm
             std::string text = templateLocation;
 
             findAndReplace(text, "{file}", fileLocation.getfile());
-            findAndReplace(text, "{line}", MathLib::toString(fileLocation.line));
-            findAndReplace(text, "{column}", MathLib::toString(fileLocation.column));
+            findAndReplace(text, "{line}", std::to_string(fileLocation.line));
+            findAndReplace(text, "{column}", std::to_string(fileLocation.column));
             findAndReplace(text, "{info}", fileLocation.getinfo().empty() ? mShortMessage : fileLocation.getinfo());
             if (text.find("{code}") != std::string::npos) {
                 const std::string::size_type pos = text.find('\r');

lib/mathlib.cpp

@@ -1059,7 +1059,7 @@ std::string MathLib::add(const std::string & first, const std::string & second)
     return (value(first) + value(second)).str();
 #else
     if (MathLib::isInt(first) && MathLib::isInt(second)) {
-        return toString(toLongNumber(first) + toLongNumber(second)) + intsuffix(first, second);
+        return std::to_string(toLongNumber(first) + toLongNumber(second)) + intsuffix(first, second);
     }
 
     double d1 = toDoubleNumber(first);
@@ -1081,7 +1081,7 @@ std::string MathLib::subtract(const std::string &first, const std::string &secon
     return (value(first) - value(second)).str();
 #else
     if (MathLib::isInt(first) && MathLib::isInt(second)) {
-        return toString(toLongNumber(first) - toLongNumber(second)) + intsuffix(first, second);
+        return std::to_string(toLongNumber(first) - toLongNumber(second)) + intsuffix(first, second);
     }
 
     if (first == second)
@@ -1112,7 +1112,7 @@ std::string MathLib::divide(const std::string &first, const std::string &second)
             throw InternalError(nullptr, "Internal Error: Division by zero");
         if (a == std::numeric_limits<bigint>::min() && std::abs(b)<=1)
             throw InternalError(nullptr, "Internal Error: Division overflow");
-        return toString(toLongNumber(first) / b) + intsuffix(first, second);
+        return std::to_string(toLongNumber(first) / b) + intsuffix(first, second);
     }
     if (isNullValue(second)) {
         if (isNullValue(first))
@@ -1129,7 +1129,7 @@ std::string MathLib::multiply(const std::string &first, const std::string &secon
     return (value(first) * value(second)).str();
 #else
     if (MathLib::isInt(first) && MathLib::isInt(second)) {
-        return toString(toLongNumber(first) * toLongNumber(second)) + intsuffix(first, second);
+        return std::to_string(toLongNumber(first) * toLongNumber(second)) + intsuffix(first, second);
     }
     return toString(toDoubleNumber(first) * toDoubleNumber(second));
 #endif
@@ -1144,7 +1144,7 @@ std::string MathLib::mod(const std::string &first, const std::string &second)
         const bigint b = toLongNumber(second);
         if (b == 0)
             throw InternalError(nullptr, "Internal Error: Division by zero");
-        return toString(toLongNumber(first) % b) + intsuffix(first, second);
+        return std::to_string(toLongNumber(first) % b) + intsuffix(first, second);
     }
     return toString(std::fmod(toDoubleNumber(first),toDoubleNumber(second)));
 #endif
@@ -1169,13 +1169,13 @@ std::string MathLib::calculate(const std::string &first, const std::string &seco
         return MathLib::mod(first, second);
 
     case '&':
-        return MathLib::toString(MathLib::toLongNumber(first) & MathLib::toLongNumber(second)) + intsuffix(first,second);
+        return std::to_string(MathLib::toLongNumber(first) & MathLib::toLongNumber(second)) + intsuffix(first,second);
 
     case '|':
-        return MathLib::toString(MathLib::toLongNumber(first) | MathLib::toLongNumber(second)) + intsuffix(first,second);
+        return std::to_string(MathLib::toLongNumber(first) | MathLib::toLongNumber(second)) + intsuffix(first,second);
 
     case '^':
-        return MathLib::toString(MathLib::toLongNumber(first) ^ MathLib::toLongNumber(second)) + intsuffix(first,second);
+        return std::to_string(MathLib::toLongNumber(first) ^ MathLib::toLongNumber(second)) + intsuffix(first,second);
 
     default:
         throw InternalError(nullptr, std::string("Unexpected action '") + action + "' in MathLib::calculate(). Please report this to Cppcheck developers.");