llvm-for-llvmta/tools/clang/test/CXX/lex/lex.literal/lex.ext/p6.cpp

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// RUN: %clang_cc1 -fsyntax-only -std=c++11 -verify %s
using size_t = decltype(sizeof(int));
int &operator "" _x1 (const char *);
double &i1 = 'a'_x1; // expected-error {{no matching literal operator}}
double &operator "" _x1 (wchar_t);
double &i2 = L'a'_x1;
double &i3 = 'a'_x1; // expected-error {{no matching literal operator}}
double &i4 = operator"" _x1('a'); // ok
char &operator "" _x1(char16_t);
char &i5 = u'a'_x1; // ok
double &i6 = L'a'_x1; // ok