Came across an interesting issue today started by my own typo. I created a lambda that takes in a reference to a struct and incorrectly set it to a std::function that receives it's argument by value.
Here's a more concise version:
#include <functional>
struct InputStruct
{
int i;
InputStruct(): i(1){}
};
void function_rcv(std::function<bool(InputStruct)> & func_ref)
{
InputStruct in;
func_ref(in);
}
int main()
{
std::function<bool(InputStruct)> my_func = [](InputStruct & in)->bool{return in.i==1;};
function_rcv(my_func);
}
Checking with godbolt shows this compiles successfully with MSVC, but fails for both Clang and GCC.
Interestingly enough, using a primitive instead of a struct fails compilation on all three compilers.
Is this a bug in the MSVC compiler?
Aucun commentaire:
Enregistrer un commentaire