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Fixed #8142 (false positive: The class 'B' has 'copy constructor' but lack of 'operator='.) 

Do not count static member variables when trying to figure out if
'operator =' is needed.
This commit is contained in:
Robert Reif 2017-08-01 19:52:41 -04:00
parent d2698733c3
commit f5044bb65f
2 changed files with 27 additions and 1 deletions
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8
lib/checkclass.cpp
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@ -2383,7 +2383,13 @@ void CheckClass::checkCopyCtorAndEqOperator()
for (std::size_t i = 0; i < classes; ++i) {
const Scope * scope = symbolDatabase->classAndStructScopes[i];
if (scope->varlist.empty())
// count the number of non-static variables
int vars = 0;
for (std::list<Variable>::const_iterator var = scope->varlist.begin(); var != scope->varlist.end(); ++var) {
if (!var->isStatic())
vars++;
}
if (vars == 0)
continue;
int hasCopyCtor = 0;

20
test/testclass.cpp
View File

@ -254,6 +254,26 @@ private:
" int x;\n"
"};");
ASSERT_EQUALS("", errout.str());
checkCopyCtorAndEqOperator("class A {\n"
"public:\n"
" A() : x(0) { }\n"
" A(const A & a) { x = a.x; }\n"
" A & operator = (const A & a) {\n"
" x = a.x;\n"
" return *this;\n"
" }\n"
"private:\n"
" int x;\n"
"};\n"
"class B : public A {\n"
"public:\n"
" B() { }\n"
" B(const B & b) :A(b) { }\n"
"private:\n"
" static int i;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void checkExplicitConstructors(const char code[]) {