zeyi2 wrote:
Sorry for the late reply (for some reason I didn't get the notification)
> Is it okay to define a class with operator[]?
I think it would be better to use a mock std like this:
```c++
namespace std {
template <typename K, typename V>
struct map {
V &operator[](const K &);
};
}
```
(Currently we still don't have `<map>` in clang-tidy's `input/headers`, so I
guess we would have to mock this ourselves).
Then we could do something like:
```c++
template <typename T>
struct TemplateHolder : Base, T {
std::map<Base *, int> M;
void test() {
auto &x = M[this];
// no-warning here?
(void)x;
}
};
```
https://github.com/llvm/llvm-project/pull/187452
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