|  | // RUN: %clang_cc1 -fsyntax-only -triple i686-pc-win32 -fms-compatibility -fms-compatibility-version=17.00 %s | 
|  | // RUN: %clang_cc1 -fsyntax-only -triple i386-mingw32 %s | 
|  |  | 
|  | // Something in MSVC's headers (pulled in e.g. by <crtdefs.h>) defines __null | 
|  | // to something, mimick that. | 
|  | #define __null | 
|  |  | 
|  | #include <stddef.h> | 
|  |  | 
|  | // __null is used as a type annotation in MS headers, with __null defined to | 
|  | // nothing in regular builds. This should continue to work even with stddef.h | 
|  | // included. | 
|  | void f(__null void* p) { } | 
|  |  | 
|  | // NULL should work fine even with __null defined to nothing. | 
|  | void* p = NULL; |