https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98515
Bug ID: 98515
Summary: Possible regression causing "is protected within this
context" error
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: belegdol at gmail dot com
Target Milestone: ---
mame-0.227 has failed to compile with gcc-11 in Fedora 34 [1]
(gcc-11.0.0-0.11.fc34). mame developers have kindly provided a minimal test
case. This fails with gcc-11 but works on
class A {
public:
A() = default;
protected:
int var0 = 0;
};
template<int a> class B : public A {
public:
using A::A;
};
template<int a, int b> class C : public B<a> {
public:
using B<a>::B;
void g();
};
template<int a, int b> void C<a, b>::g()
{
A::var0++;
}
template class C<0, 0>;
While this works:
class A {
public:
A() = default;
protected:
int var0 = 0;
};
template<int a> class B : public A {
public:
using A::A;
};
template<int a, int b> class C : public B<a> {
public:
using B<a>::B;
void g() { A::var0++; }
};
template class C<0, 0>;
[1] https://github.com/mamedev/mame/issues/7616
