ms-keyword-system-header.c revision 7f3ec66c405045ae67abf54f728845f36e91baa9 
1// RUN: %clang_cc1 -fms-extensions -D MS -isystem %S/Inputs %s -fsyntax-only -verify
2// RUN: %clang_cc1 -isystem %S/Inputs %s -fsyntax-only -verify
3
4// PR17824: GNU libc uses MS keyword __uptr as an identifier in C mode
5#include <ms-keyword-system-header.h>
6
7void fn() {
8  WS ws;
9  ws.__uptr = 0;
10#ifdef MS
11  // expected-error@-2 {{expected identifier}}
12#else
13  // expected-no-diagnostics
14#endif
15}
16