https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107771
Bug ID: 107771
Summary: Cannot resolve templated conversion operator in
templated struct
Product: gcc
Version: 12.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: alvinhochun at gmail dot com
Target Milestone: ---
With this code:
===
template <typename T>
struct bind_in
{
bind_in(T const& object) noexcept : object(object) {}
T const& object;
template <typename R>
operator R const& () const noexcept {
return reinterpret_cast<R const&>(object);
}
};
struct SomeType {
int v;
};
void func(SomeType in);
void x(const SomeType& v) {
func(bind_in(v));
}
===
GCC produces an error:
error: could not convert 'bind_in<SomeType>((* & v))' from 'bind_in<SomeType>'
to 'SomeType'
Compiler Explorer: https://godbolt.org/z/rrhY7rr3b
