// RUN: %clang_cc1 -std=c++11 -verify %s -fms-extensions -triple x86_64-apple-darwin9.0.0 using size_t = decltype(sizeof(int)); enum class LitKind { Char, WideChar, Char16, Char32, CharStr, WideStr, Char16Str, Char32Str, Integer, Floating, Raw, Template }; constexpr LitKind operator"" _kind(char p) { return LitKind::Char; } constexpr LitKind operator"" _kind(wchar_t p) { return LitKind::WideChar; } constexpr LitKind operator"" _kind(char16_t p) { return LitKind::Char16; } constexpr LitKind operator"" _kind(char32_t p) { return LitKind::Char32; } constexpr LitKind operator"" _kind(const char *p, size_t n) { return LitKind::CharStr; } constexpr LitKind operator"" _kind(const wchar_t *p, size_t n) { return LitKind::WideStr; } constexpr LitKind operator"" _kind(const char16_t *p, size_t n) { return LitKind::Char16Str; } constexpr LitKind operator"" _kind(const char32_t *p, size_t n) { return LitKind::Char32Str; } constexpr LitKind operator"" _kind(unsigned long long n) { return LitKind::Integer; } constexpr LitKind operator"" _kind(long double n) { return LitKind::Floating; } constexpr LitKind operator"" _kind2(const char *p) { return LitKind::Raw; } template<char ...Cs> constexpr LitKind operator"" _kind3() { return LitKind::Template; } static_assert('x'_kind == LitKind::Char, ""); static_assert(L'x'_kind == LitKind::WideChar, ""); static_assert(u'x'_kind == LitKind::Char16, ""); static_assert(U'x'_kind == LitKind::Char32, ""); static_assert("foo"_kind == LitKind::CharStr, ""); static_assert(u8"foo"_kind == LitKind::CharStr, ""); static_assert(L"foo"_kind == LitKind::WideStr, ""); static_assert(u"foo"_kind == LitKind::Char16Str, ""); static_assert(U"foo"_kind == LitKind::Char32Str, ""); static_assert(194_kind == LitKind::Integer, ""); static_assert(0377_kind == LitKind::Integer, ""); static_assert(0x5ffc_kind == LitKind::Integer, ""); static_assert(.5954_kind == LitKind::Floating, ""); static_assert(1._kind == LitKind::Floating, ""); static_assert(1.e-2_kind == LitKind::Floating, ""); static_assert(4e6_kind == LitKind::Floating, ""); static_assert(4e6_kind2 == LitKind::Raw, ""); static_assert(4e6_kind3 == LitKind::Template, ""); constexpr const char *fractional_digits_impl(const char *p) { return *p == '.' ? p + 1 : *p ? fractional_digits_impl(p + 1) : 0; } constexpr const char *operator"" _fractional_digits(const char *p) { return fractional_digits_impl(p) ?: p; } constexpr bool streq(const char *p, const char *q) { return *p == *q && (!*p || streq(p+1, q+1)); } static_assert(streq(143.97_fractional_digits, "97"), ""); static_assert(streq(0x786_fractional_digits, "0x786"), ""); static_assert(streq(.4_fractional_digits, "4"), ""); static_assert(streq(4._fractional_digits, ""), ""); static_assert(streq(1e+97_fractional_digits, "1e+97"), ""); static_assert(streq(0377_fractional_digits, "0377"), ""); static_assert(streq(0377.5_fractional_digits, "5"), ""); int operator"" _ambiguous(char); // expected-note {{candidate}} namespace N { void *operator"" _ambiguous(char); // expected-note {{candidate}} } using namespace N; int k = 'x'_ambiguous; // expected-error {{ambiguous}} int operator"" _deleted(unsigned long long) = delete; // expected-note {{here}} int m = 42_deleted; // expected-error {{attempt to use a deleted}} namespace Using { namespace M { int operator"" _using(char); } int k1 = 'x'_using; // expected-error {{no matching literal operator for call to 'operator "" _using'}} using M::operator "" _using; int k2 = 'x'_using; } namespace AmbiguousRawTemplate { int operator"" _ambig1(const char *); // expected-note {{candidate}} template<char...> int operator"" _ambig1(); // expected-note {{candidate}} int k1 = 123_ambig1; // expected-error {{call to 'operator "" _ambig1' is ambiguous}} namespace Inner { template<char...> int operator"" _ambig2(); // expected-note 3{{candidate}} } int operator"" _ambig2(const char *); // expected-note 3{{candidate}} using Inner::operator"" _ambig2; int k2 = 123_ambig2; // expected-error {{call to 'operator "" _ambig2' is ambiguous}} namespace N { using Inner::operator"" _ambig2; int k3 = 123_ambig2; // ok using AmbiguousRawTemplate::operator"" _ambig2; int k4 = 123_ambig2; // expected-error {{ambiguous}} namespace M { template<char...> int operator"" _ambig2(); int k5 = 123_ambig2; // ok } int operator"" _ambig2(unsigned long long); int k6 = 123_ambig2; // ok int k7 = 123._ambig2; // expected-error {{ambiguous}} } } constexpr unsigned mash(unsigned a) { return 0x93ae27b5 * ((a >> 13) | a << 19); } template<typename=void> constexpr unsigned hash(unsigned a) { return a; } template<char C, char...Cs> constexpr unsigned hash(unsigned a) { return hash<Cs...>(mash(a ^ mash(C))); } template<typename T, T v> struct constant { constexpr static T value = v; }; template<char...Cs> constexpr unsigned operator"" _hash() { return constant<unsigned, hash<Cs...>(0)>::value; } static_assert(0x1234_hash == 0x103eff5e, ""); static_assert(hash<'0', 'x', '1', '2', '3', '4'>(0) == 0x103eff5e, ""); // Functions and literal suffixes go in separate namespaces. namespace Namespace { template<char...> int operator"" _x(); int k = _x(); // expected-error {{undeclared identifier '_x'}} int _y(unsigned long long); int k2 = 123_y; // expected-error {{no matching literal operator for call to 'operator "" _y'}} } namespace PR14950 { template<...> // expected-error {{expected template parameter}} int operator"" _b(); // expected-error {{no function template matches function template specialization}} int main() { return 0_b; } // expected-error {{no matching literal operator for call to 'operator "" _b'}} } namespace bad_names { template<char...> int operator""_x(); template<typename T> void f() { class T:: // expected-error {{anonymous class}} expected-warning {{does not declare anything}} operator // expected-error {{expected identifier}} ""_q<'a'>; T::template operator""_q<'a'>(); // expected-error {{non-namespace scope 'T::' cannot have a literal operator member}} expected-error +{{}} T::template operator""_q<'a'>::X; // expected-error {{non-namespace scope 'T::' cannot have a literal operator member}} expected-error +{{}} T::operator""_q<'a'>(); // expected-error {{non-namespace scope 'T::' cannot have a literal operator member}} expected-error +{{}} typename T::template operator""_q<'a'> a; // expected-error {{non-namespace scope 'T::' cannot have a literal operator member}} expected-error +{{}} typename T::operator""_q(""); // expected-error +{{}} expected-note {{to match}} T::operator""_q(""); // expected-error {{non-namespace scope 'T::' cannot have a literal operator member}} bad_names::operator""_x<'a', 'b', 'c'>(); }; struct S {}; void g() { S::operator""_q(); // expected-error {{non-namespace scope 'S::' cannot have a literal operator member}} } }