https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86249
Bug ID: 86249
Summary: declaration conflicts with target of using declaration
already in scope
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:
namespace Name {
template <class T> class Point;
}
using Name::Point;
template <class T> class Point {
public:
Point() {}
protected:
T member;
};
int main(void) {
Name::Point<double> d;
return(0);
}
clang++ rejects the code with error messages:
error: declaration conflicts with target of using declaration already in scope
template <class T> class Point {
error: implicit instantiation of undefined template 'Name::Point<double>'
Name::Point<double> d;
g++ accepts the code. The code comes from a gcc bug report:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=1876
I thought that it is a clang++ bug, and reported it to
https://bugs.llvm.org/show_bug.cgi?id=37867
Richard Smith determined that this is a gcc bug. Shall gcc repair the bug, if
it is?
