liutang123 opened a new pull request, #24062:
URL: https://github.com/apache/doris/pull/24062
## Proposed changes
If exec `shared_from_this()` in an object of class that extends from a class
witch extends `enable_shared_from_this`, it will return an object of shared_ptr
of its super class.
Here is a code example.
```
#include <iostream>
using namespace std;
class SS;
class SSS;
void func(std::shared_ptr<SS> s);
void func(std::shared_ptr<SSS> s);
class SS : public std::enable_shared_from_this<SS> {};
class SSS : public SS {
public:
void do_func() {
func(shared_from_this()); // this shared_from_this() returns
an shared_ptr<SS>
}
};
void func(std::shared_ptr<SS> s) {
std::cout << "SS" << endl;
}
void func(std::shared_ptr<SSS> s) {
std::cout << "SSS" << endl;
}
int main() {
auto sss = std::make_shared<SSS>();
sss->do_func();
}
```
This code will print `SS`.
Issue Number: close #xxx
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