// RUN: %clang_cc1 %s -verify -Wall
_Pragma ("GCC system_header") // expected-warning {{system_header ignored in main file}}
// rdar://6880630
_Pragma("#define macro") // expected-warning {{unknown pragma ignored}}
_Pragma("") // expected-warning {{unknown pragma ignored}}
_Pragma("message(\"foo \\\\\\\\ bar\")") // expected-warning {{foo \\ bar}}
#ifdef macro
#error #define invalid
#endif