pragma-message.c revision 076eea20b80024fc63bbd71fb019375983680ea6 
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)))
28COMPILE_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