52 lines · cpp
1// RUN: %clang_cc1 -triple x86_64-unknown-unknown -fsyntax-only -verify %s2 3/// Prevent use of all builtins.4void valid_attribute_all_1() __attribute__((no_builtin)) {}5void valid_attribute_all_2() __attribute__((no_builtin())) {}6 7/// Prevent use of specific builtins.8void valid_attribute_function() __attribute__((no_builtin("memcpy"))) {}9void valid_attribute_functions() __attribute__((no_builtin("memcpy"))) __attribute__((no_builtin("memcmp"))) {}10 11/// Many times the same builtin is fine.12void many_attribute_function_1() __attribute__((no_builtin)) __attribute__((no_builtin)) {}13void many_attribute_function_2() __attribute__((no_builtin("memcpy"))) __attribute__((no_builtin("memcpy"))) {}14void many_attribute_function_3() __attribute__((no_builtin("memcpy", "memcpy"))) {}15void many_attribute_function_4() __attribute__((no_builtin("memcpy", "memcpy"))) __attribute__((no_builtin("memcpy"))) {}16 17/// Invalid builtin name.18void invalid_builtin() __attribute__((no_builtin("not_a_builtin"))) {}19// expected-warning@-1 {{'not_a_builtin' is not a valid builtin name for 'no_builtin'}}20 21/// Can't use bare no_builtin with a named one.22void wildcard_and_functionname() __attribute__((no_builtin)) __attribute__((no_builtin("memcpy"))) {}23// expected-error@-1 {{empty 'no_builtin' cannot be composed with named ones}}24 25/// Can't attach attribute to a variable.26int __attribute__((no_builtin)) variable;27// expected-warning@-1 {{'no_builtin' attribute only applies to functions}}28 29/// Can't attach attribute to a declaration.30void nobuiltin_on_declaration() __attribute__((no_builtin));31// expected-error@-1 {{no_builtin attribute is permitted on definitions only}}32 33struct S {34 /// Can't attach attribute to a defaulted function,35 S()36 __attribute__((no_builtin)) = default;37 // expected-error@-1 {{no_builtin attribute has no effect on defaulted or deleted functions}}38 39 /// Can't attach attribute to a deleted function,40 S(const S &)41 __attribute__((no_builtin)) = delete;42 // expected-error@-1 {{no_builtin attribute has no effect on defaulted or deleted functions}}43 44 void whatever() __attribute__((no_builtin("memcpy")));45 // expected-error@-1 {{no_builtin attribute is permitted on definitions only}}46};47 48/// Can't attach attribute to an aliased function.49void alised_function() {}50void aliasing_function() __attribute__((no_builtin)) __attribute__((alias("alised_function")));51// expected-error@-1 {{no_builtin attribute is permitted on definitions only}}52