https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116636
Bug ID: 116636
Summary: Deprecation warning/unavailable error when overriding
member of virtual base class
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: rs2740 at gmail dot com
Target Milestone: ---
Repro:
struct B {
virtual void f() = 0;
};
struct C : virtual B {
[[deprecated("meow")]]
void f() override {}
};
<source>:6:24: warning: 'virtual void C::f()' is deprecated: meow
[-Wdeprecated-declarations]
6 | void f() override {}
| ^
<source>:6:10: note: declared here
6 | void f() override {}
| ^
Likewise:
struct B {
virtual void f() = 0;
};
struct C : virtual B {
[[gnu::unavailable("meow")]]
void f() override {}
};
<source>:6:24: error: 'virtual void C::f()' is unavailable: meow
6 | void f() override {}
| ^
<source>:6:10: note: declared here
6 | void f() override {}
| ^
Making the base class non-virtual makes the warning/error go away.
