1 // RUN: not %clang_cc1 -fsyntax-only %s 2 // PR1900 3 // This test should get a redefinition error from m_iopt.h: the MI opt 4 // shouldn't apply. 5 6 #define MACRO 7 #include "mi_opt.h" 8 #undef MACRO 9 #define MACRO || 1 10 #include "mi_opt.h" 11 12