https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67166
Bug ID: 67166
Summary: Inconsistency between static data members and static
functions when using multiple inheritance
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: anders.granlund.0 at gmail dot com
Target Milestone: ---
Consider the following two programs:
struct A { static const int x = 0; };
struct B : A { using A::x; };
struct C : B, A {};
int main() { C::x; }
struct A { static void x() {} };
struct B : A { using A::x; };
struct C : B, A {};
int main() { C::x; }
Compile them with the following command line:
g++ prog.cc -std=c++14 -pedantic-errors
GCC inconsistently accepts the first program, but rejects the second program
with the following error:
prog.cc: In function 'int main()':
prog.cc:4:16: error: reference to 'x' is ambiguous
int main() { C::x; }
^
prog.cc:1:26: note: candidates are: static void A::x()
struct A { static void x() {} };
^
prog.cc:1:26: note: static void A::x()
I think GCC should consistently accept both programs just like clang does.
This is because we have no ambiguity here in the name-lookup. There is only one
entity with name x, the static member of A.
I have tried this with gcc HEAD 6.0.0 20150808 here:
http://melpon.org/wandbox/permlink/mbr1XEKQp7bF71iS
http://melpon.org/wandbox/permlink/E5iKa6GfLG2q1m0o
