https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97340
Bug ID: 97340
Summary: Spurious rejection of member variable template of
reference type
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: herring at lanl dot gov
Target Milestone: ---
In many recent versions of GCC, the following valid code
struct A {
template<class>
static constexpr const int &x=0;
};
template<class T=void>
struct B {
static constexpr int y=A::template x<int>;
};
template struct B<>;
produces
error: ''indirect_ref' not supported by dump_decl<declaration error>' is not a
template [-fpermissive]
7 | static constexpr int y=A::template x<int>;
| ~~~~~~~~~~~~^~~~~~
The 'template' after '::' here is unnecessary; removing it avoids the error,
but the error also appears if A is a class template (so that it's necessary to
write "A<T>::template x<int>"). Making A::x not be a reference also avoids the
error, as does referring to it from a non-templated context.
