https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86252
Bug ID: 86252
Summary: Abstract class in function return type
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: zhonghao at pku dot org.cn
Target Milestone: ---
The code is as follow:
template<typename T>
struct S{};
struct A
{
virtual void f() = 0;
};
int main()
{
S<A(int)> s;
}
An abstract class shall not be used as a function return type, but clang++
accepts the code.
The code comes from a gcc bug report
(https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51184).
I reported the problem to clang: https://bugs.llvm.org/show_bug.cgi?id=37833
Richard Smith told me that the language rule changed recently.
Will g++ catch up the so-called rule change?
