https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71664
Bug ID: 71664
Summary: valid C++11 code with qualified enumerator lookup
rejected
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: su at cs dot ucdavis.edu
Target Milestone: ---
The following C++11 code is rejected when compiled with the current GCC trunk
on x86_64-linux-gnu in both 32-bit and 64-bit modes.
It also affects older versions at least as early as 4.6.x.
This is related to and derived from PR 71662.
$ g++-trunk -v
Using built-in specs.
COLLECT_GCC=g++-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/7.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-source-trunk/configure --enable-languages=c,c++,lto
--prefix=/usr/local/gcc-trunk --disable-bootstrap
Thread model: posix
gcc version 7.0.0 20160625 (experimental) [trunk revision 237780] (GCC)
$
$ clang++-3.8 -c -std=c++11 small.cpp
$
$ g++-trunk -c -std=c++11 small.cpp
small.cpp: In instantiation of ‘A<T>::E A<T>::h() [with T = int]’:
small.cpp:8:23: required from here
small.cpp:14:22: error: ‘e’ is not a member of ‘A<int>::E’
return A < T >::E::e;
^
$
--------------------------------------------------------------
template < typename T > struct A
{
enum E : T;
E h ();
};
A < int > a;
A < int >::E b = a.h ();
template < typename T > enum A < T >::E : T { e };
template < typename T > typename A < T >::E A < T >::h ()
{
return A < T >::E::e;
}
