https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64267
Bug ID: 64267
Summary: [DR 482] Qualified declarators in redeclarations
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Keywords: rejects-valid
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: redi at gcc dot gnu.org
namespace S
{
struct coll;
struct ::S::coll { };
}
qual.cc:4:20: error: global qualification of class name is invalid before ‘{’
token
struct ::S::coll { };
^
Clang 3.4 rejected this but 3.5 accepts it (with a -Wextra-qualification
warning) and EDG accepts it.
http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#482 makes this
valid, in at least C++14 (but it's a DR against C++11 so maybe there too).
The example from DR 482 is:
void f();
void ::f(); // error: qualified declarator
namespace N {
void f();
void N::f() { } // error: qualified declarator
}
I get the same results for this, Clang 3.4 rejects, 3.5+ accepts, EDG accepts,
and G++ rejects in all modes:
dr482.cc:2:14: error: explicit qualification in declaration of ‘void f()’
void ::f(); // error: qualified declarator
^
dr482.cc:6:17: error: explicit qualification in declaration of ‘void N::f()’
void N::f() { } // error: qualified declarator
^
