clang/test/Lexer/pragma-message.c

   1 /* Test pragma message directive from
   2    http://msdn.microsoft.com/en-us/library/x7dkzch2.aspx */
   3 // message: Sends a string literal to the standard output without terminating
   4 // the compilation.
   5 // #pragma message(messagestring)
   6 // OR
   7 // #pragma message messagestring
   8 //
   9 // RUN: %clang_cc1 -fsyntax-only -verify -Werror %s
  10 // RUN: %clang_cc1 -fsyntax-only -verify -Werror -W#pragma-messages %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}}