1 // { dg-do compile { target c++11 } }
2 
3 #include <string>
4 
5 std::string operator"" _xxx(const char*, size_t);
6 
7 std::string operator"" _yyy(const char*, size_t);
8 
9 std::string concat = "Hello, "_xxx "World!"_yyy;	// { dg-error "inconsistent user-defined literal suffixes" }
10