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150
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1 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -fsyntax-only -verify %s
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2 // UNSUPPORTED: ppc64be
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3
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4 /// Prevent use of all builtins.
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5 void valid_attribute_all_1() __attribute__((no_builtin)) {}
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6 void valid_attribute_all_2() __attribute__((no_builtin())) {}
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7
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8 /// Prevent use of specific builtins.
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9 void valid_attribute_function() __attribute__((no_builtin("memcpy"))) {}
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10 void valid_attribute_functions() __attribute__((no_builtin("memcpy"))) __attribute__((no_builtin("memcmp"))) {}
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11
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12 /// Many times the same builtin is fine.
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13 void many_attribute_function_1() __attribute__((no_builtin)) __attribute__((no_builtin)) {}
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14 void many_attribute_function_2() __attribute__((no_builtin("memcpy"))) __attribute__((no_builtin("memcpy"))) {}
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15 void many_attribute_function_3() __attribute__((no_builtin("memcpy", "memcpy"))) {}
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16 void many_attribute_function_4() __attribute__((no_builtin("memcpy", "memcpy"))) __attribute__((no_builtin("memcpy"))) {}
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17
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18 /// Invalid builtin name.
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19 void invalid_builtin() __attribute__((no_builtin("not_a_builtin"))) {}
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173
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20 // expected-warning@-1 {{'not_a_builtin' is not a valid builtin name for 'no_builtin'}}
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150
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21
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22 /// Can't use bare no_builtin with a named one.
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23 void wildcard_and_functionname() __attribute__((no_builtin)) __attribute__((no_builtin("memcpy"))) {}
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173
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24 // expected-error@-1 {{empty 'no_builtin' cannot be composed with named ones}}
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150
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25
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26 /// Can't attach attribute to a variable.
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27 int __attribute__((no_builtin)) variable;
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28 // expected-warning@-1 {{'no_builtin' attribute only applies to functions}}
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29
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30 /// Can't attach attribute to a declaration.
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31 void nobuiltin_on_declaration() __attribute__((no_builtin));
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32 // expected-error@-1 {{no_builtin attribute is permitted on definitions only}}
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33
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34 struct S {
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35 /// Can't attach attribute to a defaulted function,
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36 S()
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37 __attribute__((no_builtin)) = default;
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38 // expected-error@-1 {{no_builtin attribute has no effect on defaulted or deleted functions}}
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39
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40 /// Can't attach attribute to a deleted function,
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41 S(const S &)
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42 __attribute__((no_builtin)) = delete;
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43 // expected-error@-1 {{no_builtin attribute has no effect on defaulted or deleted functions}}
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44
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45 void whatever() __attribute__((no_builtin("memcpy")));
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46 // expected-error@-1 {{no_builtin attribute is permitted on definitions only}}
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47 };
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48
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49 /// Can't attach attribute to an aliased function.
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50 void alised_function() {}
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51 void aliasing_function() __attribute__((no_builtin)) __attribute__((alias("alised_function")));
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52 // expected-error@-1 {{no_builtin attribute is permitted on definitions only}}
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