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C.87: fix missing access specifiers (closes #1957)

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Sergey Zubkov
2022-08-08 15:39:14 -04:00
parent 9a95f97f44
commit 9d28e32999
1 changed files with 5 additions and 3 deletions
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CppCoreGuidelines.md
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@@ -6653,6 +6653,7 @@ It is really hard to write a foolproof and useful `==` for a hierarchy.
class B {
string name;
int number;
public:
virtual bool operator==(const B& a) const
{
return name == a.name && number == a.number;
@@ -6662,11 +6663,12 @@ It is really hard to write a foolproof and useful `==` for a hierarchy.
`B`'s comparison accepts conversions for its second operand, but not its first.
class D : B {
class D : public B {
char character;
public:
virtual bool operator==(const D& a) const
{
return name == a.name && number == a.number && character == a.character;
return B::operator==(a) && character == a.character;
}
// ...
};
@@ -6674,7 +6676,7 @@ It is really hard to write a foolproof and useful `==` for a hierarchy.
B b = ...
D d = ...
b == d; // compares name and number, ignores d's character
d == b; // error: no == defined
d == b; // compares name and number, ignores d's character
D d2;
d == d2; // compares name, number, and character
B& b2 = d2;