113 lines
4.3 KiB
C++
113 lines
4.3 KiB
C++
// RUN: %clang_cc1 -std=c++11 -verify %s -fms-extensions -triple x86_64-apple-darwin9.0.0
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// A ud-suffix cannot be used on string literals in a whole bunch of contexts:
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#include "foo"_bar // expected-error {{expected "FILENAME" or <FILENAME>}}
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#line 1 "foo"_bar // expected-error {{user-defined suffix cannot be used here}}
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# 1 "foo"_bar 1 // expected-error {{user-defined suffix cannot be used here}}
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#ident "foo"_bar // expected-error {{user-defined suffix cannot be used here}}
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_Pragma("foo"_bar) // expected-error {{user-defined suffix cannot be used here}}
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#pragma comment(lib, "foo"_bar) // expected-error {{user-defined suffix cannot be used here}}
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_Pragma("comment(lib, \"foo\"_bar)") // expected-error {{user-defined suffix cannot be used here}}
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#pragma message "hi"_there // expected-error {{user-defined suffix cannot be used here}} expected-warning {{hi}}
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#pragma push_macro("foo"_bar) // expected-error {{user-defined suffix cannot be used here}}
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#if __has_warning("-Wan-island-to-discover"_bar) // expected-error {{user-defined suffix cannot be used here}}
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#elif __has_include("foo"_bar) // expected-error {{expected "FILENAME" or <FILENAME>}}
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#endif
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extern "C++"_x {} // expected-error {{user-defined suffix cannot be used here}} expected-error {{unknown linkage language}}
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int f() {
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asm("mov %eax, %rdx"_foo); // expected-error {{user-defined suffix cannot be used here}}
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}
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static_assert(true, "foo"_bar); // expected-error {{user-defined suffix cannot be used here}}
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int cake() __attribute__((availability(macosx, unavailable, message = "is a lie"_x))); // expected-error {{user-defined suffix cannot be used here}}
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// A ud-suffix cannot be used on character literals in preprocessor constant
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// expressions:
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#if 'x'_y - u'x'_z // expected-error 2{{character literal with user-defined suffix cannot be used in preprocessor constant expression}}
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#error error
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#endif
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// A ud-suffix cannot be used on integer literals in preprocessor constant
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// expressions:
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#if 0_foo // expected-error {{integer literal with user-defined suffix cannot be used in preprocessor constant expression}}
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#error error
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#endif
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// But they can appear in expressions.
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constexpr char operator"" _id(char c) { return c; }
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constexpr wchar_t operator"" _id(wchar_t c) { return c; }
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constexpr char16_t operator"" _id(char16_t c) { return c; }
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constexpr char32_t operator"" _id(char32_t c) { return c; }
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using size_t = decltype(sizeof(int));
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constexpr const char operator"" _id(const char *p, size_t n) { return *p; }
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constexpr const wchar_t operator"" _id(const wchar_t *p, size_t n) { return *p; }
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constexpr const char16_t operator"" _id(const char16_t *p, size_t n) { return *p; }
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constexpr const char32_t operator"" _id(const char32_t *p, size_t n) { return *p; }
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constexpr unsigned long long operator"" _id(unsigned long long n) { return n; }
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constexpr long double operator"" _id(long double d) { return d; }
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template<int n> struct S {};
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S<"a"_id> sa;
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S<L"b"_id> sb;
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S<u8"c"_id> sc;
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S<u"d"_id> sd;
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S<U"e"_id> se;
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S<'w'_id> sw;
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S<L'x'_id> sx;
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S<u'y'_id> sy;
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S<U'z'_id> sz;
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S<100_id> sn;
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S<(int)1.3_id> sf;
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void h() {
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(void)"test"_id "test" L"test";
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}
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// Test source location for suffix is known
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const char *p =
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"foo\nbar" R"x(
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erk
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flux
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)x" "eep\x1f"\
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_no_such_suffix // expected-error {{'operator "" _no_such_suffix'}}
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"and a bit more"
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"and another suffix"_no_such_suffix;
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char c =
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'\x14'\
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_no_such_suffix; // expected-error {{'operator "" _no_such_suffix'}}
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int &r =
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1234567\
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_no_such_suffix; // expected-error {{'operator "" _no_such_suffix'}}
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int k =
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1234567.89\
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_no_such_suffix; // expected-error {{'operator "" _no_such_suffix'}}
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// Make sure we handle more interesting ways of writing a string literal which
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// is "" in translation phase 7.
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void operator "\
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" _foo(unsigned long long); // ok
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void operator R"xyzzy()xyzzy" _foo(long double); // ok
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void operator"" "" R"()" "" _foo(const char *); // ok
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// Ensure we diagnose the bad cases.
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void operator "\0" _non_empty(const char *); // expected-error {{must be '""'}}
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void operator ""_no_space(const char *); // expected-error {{C++11 requires a space}}
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void operator L"" _not_char(const char *); // expected-error {{cannot have an encoding prefix}}
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void operator "" ""
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U"" // expected-error {{cannot have an encoding prefix}}
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"" _also_not_char(const char *);
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void operator "" u8"" "\u0123" "hello"_all_of_the_things ""(const char*); // expected-error {{must be '""'}}
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