https://bugs.llvm.org/show_bug.cgi?id=38601
Bug ID: 38601
Summary: static cast a derived class to base class with defined
type case operators
Product: new-bugs
Version: trunk
Hardware: PC
OS: MacOS X
Status: NEW
Severity: normal
Priority: P
Component: new bugs
Assignee: unassignedb...@nondot.org
Reporter: luyi0...@gmail.com
CC: llvm-bugs@lists.llvm.org
#include <iostream>
#include <tuple>
using Base = std::tuple<int,int>;
struct Derived : Base {
template <class ...Ts>
Derived(int x, Ts&&... ts): Base(std::forward<Ts>(ts)...), x(x) {
}
operator int () const {
return x;
}
int x;
};
int main() {
Derived d(1, 2, 3);
Base b = static_cast<Base>(d);
// he output is 0 1 in clang++, but the expected output is 2 3
std::cout << std::get<0>(b) << " " << std::get<1>(b) << std::endl;
return 0;
}
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