https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61663
Bug ID: 61663
Summary: [DR 976] Deduction for const T& conversion functions
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: david.d.kretzmer at gmail dot com
GCC 4.9.0 rejects the following code:
struct F
{
template<class T>
operator const T&() { static T t; return t; }
};
int main()
{
F f;
int i = f; // error: cannot convert 'F' to 'int' in initialization
}
As explained in the defects report
(http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#976) this used to
be invalid but after the corrections in 14.8.2.3 [temp.deduct.conv] paragraphs
1-3 the above code should compile.
