http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58856
Bug ID: 58856
Summary: [4.9 Regression] spurious 'wrong number of template
arguments' error for template alias
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: st at quanttec dot com
The current trunk version of GCC fails to compile the following valid sample
template <typename T>
struct U1 {};
template <typename T1, typename... Ts>
using U2 = U1<T1>;
template <typename T1, typename... Ts>
using U3 = U2<T1, Ts...>;
> g++ -std=c++11 -Wall -Wextra test.cpp
test.cpp:8:24: error: wrong number of template arguments (2, should be 1)
using U3 = U2<T1, Ts...>;
^
test.cpp:2:8: error: provided for ‘template<class T> struct U1’
struct U1 {};
^
This bug doesn't seem to exist in
g++ (GCC) 4.8.1 20130603 (Red Hat 4.8.1-1)
and in
g++ (Built by MinGW-builds project) 4.9.0 20130717 (experimental)
