1 /* Test pragma message directive from 2 http://msdn.microsoft.com/en-us/library/x7dkzch2.aspx */ 3 4 // message: Sends a string literal to the standard output without terminating 5 // the compilation. 6 // #pragma message(messagestring) 7 // OR 8 // #pragma message messagestring 9 // 10 // RUN: %clang_cc1 -fsyntax-only -verify -Werror %s 11 #define STRING2(x) #x 12 #define STRING(x) STRING2(x) 13 #pragma message(":O I'm a message! " STRING(__LINE__)) // expected-warning {{:O I'm a message! 13}} 14 #pragma message ":O gcc accepts this! " STRING(__LINE__) // expected-warning {{:O gcc accepts this! 14}} 15 16 #pragma message(invalid) // expected-error {{expected string literal in pragma message}} 17 18 // GCC supports a similar pragma, #pragma GCC warning (which generates a warning 19 // message) and #pragma GCC error (which generates an error message). 20 21 #pragma GCC warning(":O I'm a message! " STRING(__LINE__)) // expected-warning {{:O I'm a message! 21}} 22 #pragma GCC warning ":O gcc accepts this! " STRING(__LINE__) // expected-warning {{:O gcc accepts this! 22}} 23 24 #pragma GCC error(":O I'm a message! " STRING(__LINE__)) // expected-error {{:O I'm a message! 24}} 25 #pragma GCC error ":O gcc accepts this! " STRING(__LINE__) // expected-error {{:O gcc accepts this! 25}} 26 27 #define COMPILE_ERROR(x) _Pragma(STRING2(GCC error(x))) 28 COMPILE_ERROR("Compile error at line " STRING(__LINE__) "!"); // expected-error {{Compile error at line 28!}} 29 30 #pragma message // expected-error {{pragma message requires parenthesized string}} 31 #pragma GCC warning("" // expected-error {{pragma warning requires parenthesized string}} 32 #pragma GCC error(1) // expected-error {{expected string literal in pragma error}} 33