test/Preprocessor/mi_opt.c


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// RUN: not clang -fsyntax-only %s
// PR1900
// This test should get a redefinition error from m_iopt.h: the MI opt 
// shouldn't apply.

#define MACRO
#include "mi_opt.h"
#undef MACRO
#define MACRO || 1
#include "mi_opt.h"