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| CodeSonar® 9.0p0 Hot Tips | CONFIDENTIAL | CodeSecure Inc |
An assignment operator (operator=) does not return a value equal to *this, and is used one or more times in the analyzed code.
| Class Name | Inappropriate Assignment Operator Return | ||||||
|---|---|---|---|---|---|---|---|
| Significance | style | ||||||
| Mnemonic | LANG.STRUCT.ASSIGNRET | ||||||
| Categories |
|
||||||
| Availability | Available for C++ only (not C). |
||||||
| Enabling | Checks for this warning class are
disabled by default. To enable them, add the following WARNING_FILTER
rule to the project configuration file.
WARNING_FILTER += allow class="Inappropriate Assignment Operator Return" |
Japanese (ja)
class MyClass1 {
public:
MyClass1(int x) : m_x(x) {};
MyClass1 & operator=(MyClass1 & other) {
m_x = other.m_x;
return other; // 'Inappropriate Assignment Operator Return' warning issued here
}
private:
int m_x;
};
class MyClass2 {
public:
MyClass2(int x) : m_x(x) {};
void operator=(MyClass2 & other) { // 'Inappropriate Assignment Operator Return' warning issued here
m_x = other.m_x;
}
private:
int m_x;
};
class MyClass3 {
public:
MyClass3(int x) : m_x(x) {};
MyClass3 & operator=(MyClass3 & other) {
m_x = other.m_x;
return *this; // ok: returns *this
}
private:
int m_x;
};
// Use the assignment operators so that they are instantiated.
void test( MyClass1 & p1, MyClass2 & p2, MyClass3 & p3 )
{
MyClass1 v1(0);
MyClass2 v2(0);
MyClass3 v3(0);
v1 = p1;
v2 = p2;
v3 = p3;
}
The following configuration file parameters affect checks for this warning class.