Hi, adding the testcase and closing the PR as fixed.
Thanks, Paolo. //////////////////////////////
2012-10-10 Paolo Carlini <paolo.carl...@oracle.com> PR c++/50478 * g++.dg/cpp0x/initlist67.C: New.
Index: g++.dg/cpp0x/initlist67.C =================================================================== --- g++.dg/cpp0x/initlist67.C (revision 0) +++ g++.dg/cpp0x/initlist67.C (working copy) @@ -0,0 +1,27 @@ +// PR c++/50478 +// { dg-do compile { target c++11 } } + +#include <initializer_list> + +namespace std +{ + template<typename _Key> + struct set + { + void insert(const _Key&); + void insert(initializer_list<_Key>); + }; + + struct string + { + string(const string&, __SIZE_TYPE__, __SIZE_TYPE__ = -1); + string(const char*); + string(initializer_list<char>); + }; +} + +int main() +{ + std::set<std::string> s; + s.insert( { "abc", "def", "hij"} ); +}