derek.holloway
7502bf64a4
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52 lines
2.4 KiB
C++
52 lines
2.4 KiB
C++
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -fsyntax-only -verify %s
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/// Prevent use of all builtins.
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void valid_attribute_all_1() __attribute__((no_builtin)) {}
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void valid_attribute_all_2() __attribute__((no_builtin())) {}
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/// Prevent use of specific builtins.
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void valid_attribute_function() __attribute__((no_builtin("memcpy"))) {}
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void valid_attribute_functions() __attribute__((no_builtin("memcpy"))) __attribute__((no_builtin("memcmp"))) {}
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/// Many times the same builtin is fine.
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void many_attribute_function_1() __attribute__((no_builtin)) __attribute__((no_builtin)) {}
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void many_attribute_function_2() __attribute__((no_builtin("memcpy"))) __attribute__((no_builtin("memcpy"))) {}
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void many_attribute_function_3() __attribute__((no_builtin("memcpy", "memcpy"))) {}
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void many_attribute_function_4() __attribute__((no_builtin("memcpy", "memcpy"))) __attribute__((no_builtin("memcpy"))) {}
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/// Invalid builtin name.
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void invalid_builtin() __attribute__((no_builtin("not_a_builtin"))) {}
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// expected-warning@-1 {{'not_a_builtin' is not a valid builtin name for 'no_builtin'}}
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/// Can't use bare no_builtin with a named one.
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void wildcard_and_functionname() __attribute__((no_builtin)) __attribute__((no_builtin("memcpy"))) {}
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// expected-error@-1 {{empty 'no_builtin' cannot be composed with named ones}}
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/// Can't attach attribute to a variable.
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int __attribute__((no_builtin)) variable;
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// expected-warning@-1 {{'no_builtin' attribute only applies to functions}}
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/// Can't attach attribute to a declaration.
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void nobuiltin_on_declaration() __attribute__((no_builtin));
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// expected-error@-1 {{no_builtin attribute is permitted on definitions only}}
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struct S {
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/// Can't attach attribute to a defaulted function,
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S()
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__attribute__((no_builtin)) = default;
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// expected-error@-1 {{no_builtin attribute has no effect on defaulted or deleted functions}}
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/// Can't attach attribute to a deleted function,
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S(const S &)
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__attribute__((no_builtin)) = delete;
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// expected-error@-1 {{no_builtin attribute has no effect on defaulted or deleted functions}}
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void whatever() __attribute__((no_builtin("memcpy")));
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// expected-error@-1 {{no_builtin attribute is permitted on definitions only}}
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};
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/// Can't attach attribute to an aliased function.
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void alised_function() {}
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void aliasing_function() __attribute__((no_builtin)) __attribute__((alias("alised_function")));
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// expected-error@-1 {{no_builtin attribute is permitted on definitions only}}
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