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Fixed #4689 (False positive: Unused private function (used in default argument of constructor))

This commit is contained in:
Daniel Marjamäki 2013-08-26 16:41:23 +02:00
parent a1b9bb0688
commit 80093f0a40
2 changed files with 23 additions and 1 deletions
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11
lib/checkclass.cpp
View File

@ -801,6 +801,14 @@ static bool checkFunctionUsage(const std::string& name, const Scope* scope)
for (std::list<Function>::const_iterator func = scope->functionList.begin(); func != scope->functionList.end(); ++func) {
if (func->functionScope) {
if (Token::Match(func->tokenDef, "%var% (")) {
for (const Token *ftok = func->tokenDef->tokAt(2); ftok && ftok->str() != ")"; ftok = ftok->next()) {
if (Token::Match(ftok, "= %var% (") && ftok->strAt(1) == name)
return true;
if (ftok->str() == "(")
ftok = ftok->link();
}
}
for (const Token *ftok = func->functionScope->classDef->linkAt(1); ftok != func->functionScope->classEnd; ftok = ftok->next()) {
if (ftok->str() == name) // Function used. TODO: Handle overloads
return true;
@ -856,11 +864,12 @@ void CheckClass::privateFunctions()
// Check that all private functions are used
bool used = checkFunctionUsage(funcName, &*scope); // Usage in this class
// Check in friend classes
for (std::list<Type::FriendInfo>::const_iterator it = scope->definedType->friendList.begin(); !used && it != scope->definedType->friendList.end(); ++it)
for (std::list<Type::FriendInfo>::const_iterator it = scope->definedType->friendList.begin(); !used && it != scope->definedType->friendList.end(); ++it) {
if (it->type)
used = checkFunctionUsage(funcName, it->type->classScope);
else
used = true; // Assume, it is used if we do not see friend class
}
if (!used)
unusedPrivateFunctionError(FuncList.front()->tokenDef, scope->className, funcName);

13
test/testunusedprivfunc.cpp
View File

@ -47,6 +47,7 @@ private:
TEST_CASE(func_pointer5); // ticket #2233
TEST_CASE(ctor);
TEST_CASE(ctor2);
TEST_CASE(classInClass);
TEST_CASE(sameFunctionNames);
@ -329,6 +330,18 @@ private:
ASSERT_EQUALS("", errout.str());
}
void ctor2() {
check("struct State {\n"
" State(double const totalWeighting= TotalWeighting()) :\n"
" totalWeighting_(totalWeighting) {}\n"
"private:\n"
" double TotalWeighting() { return 123.0; }\n" // called from constructor
"public:\n"
" double totalWeighting_;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void classInClass() {
check("class A\n"