12 …const char* a = u8"abc" u"abc"; // expected-error {{unsupported non-standard concatenation of stri…  in f()
13 …const char* b = u8"abc" U"abc"; // expected-error {{unsupported non-standard concatenation of stri…  in f()
14 …const char* c = u8"abc" L"abc"; // expected-error {{unsupported non-standard concatenation of stri…  in f()
16 …const char* d = u8"abc" uR"(abc)"; // expected-error {{unsupported non-standard concatenation of s…  in f()
17 …const char* e = u8"abc" UR"(abc)"; // expected-error {{unsupported non-standard concatenation of s…  in f()
18 …const char* f = u8"abc" LR"(abc)"; // expected-error {{unsupported non-standard concatenation of s…  in f()
21 …const char16_t* g = u"abc" u8"abc"; // expected-error {{unsupported non-standard concatenation of …  in f()
22 …const char16_t* h = u"abc" U"abc"; // expected-error {{unsupported non-standard concatenation of s…  in f()
23 …const char16_t* i = u"abc" L"abc"; // expected-error {{unsupported non-standard concatenation of s…  in f()
25 …const char16_t* j = u"abc" u8R"(abc)"; // expected-error {{unsupported non-standard concatenation …  in f()
26 …const char16_t* k = u"abc" UR"(abc)"; // expected-error {{unsupported non-standard concatenation o…  in f()
27 …const char16_t* l = u"abc" LR"(abc)"; // expected-error {{unsupported non-standard concatenation o…  in f()
30 …const char32_t* m = U"abc" u8"abc"; // expected-error {{unsupported non-standard concatenation of …  in f()
31 …const char32_t* n = U"abc" u"abc"; // expected-error {{unsupported non-standard concatenation of s…  in f()
32 …const char32_t* o = U"abc" L"abc"; // expected-error {{unsupported non-standard concatenation of s…  in f()
34 …const char32_t* p = U"abc" u8R"(abc)"; // expected-error {{unsupported non-standard concatenation …  in f()
35 …const char32_t* q = U"abc" uR"(abc)"; // expected-error {{unsupported non-standard concatenation o…  in f()
36 …const char32_t* r = U"abc" LR"(abc)"; // expected-error {{unsupported non-standard concatenation o…  in f()
39 …const wchar_t* s = L"abc" u8"abc"; // expected-error {{unsupported non-standard concatenation of s…  in f()
40 …const wchar_t* t = L"abc" u"abc"; // expected-error {{unsupported non-standard concatenation of st…  in f()
41 …const wchar_t* u = L"abc" U"abc"; // expected-error {{unsupported non-standard concatenation of st…  in f()
43 …const wchar_t* v = L"abc" u8R"(abc)"; // expected-error {{unsupported non-standard concatenation o…  in f()
44 …const wchar_t* w = L"abc" uR"(abc)"; // expected-error {{unsupported non-standard concatenation of…  in f()
45 …const wchar_t* x = L"abc" UR"(abc)"; // expected-error {{unsupported non-standard concatenation of…  in f()