http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58888
Bug ID: 58888
Summary: [c++11] Rejects-valid: static member with auto and
initializer
Product: gcc
Version: 4.8.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: thomas.br...@virtuell-zuhause.de
The following code is rejected by
~/gcc-4.8.2/bin/g++ -std=c++11 test.cpp
########
#include <iostream>
struct A
{
static constexpr auto b{1.0};
};
constexpr decltype(A::b) A::b;
int main(int argc, char** argv)
{
std::cout << &A::b << std::endl;
}
########
with the message
#########
test.cpp:46:30: error: invalid use of 'auto'
static constexpr auto b{1.0};
^
test.cpp:49:30: error: invalid type in declaration before ';' token
constexpr decltype(A::b) A::b;
^
test.cpp:49:30: error: declaration of 'constexpr<typeprefixerror> A::b' outside
of class is not definition [-fpermissive]
#########
I'm using g++ (GCC) 4.8.2.
My interpretation of &7.1.6.4 is that this code is valid, clang accepts the
code and
http://stackoverflow.com/questions/12834874/auto-static-in-class-constant-initalization-with-meta-programming
also suggests that it is valid.
