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-rw-r--r--gcc/c-semantics.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/c-semantics.c b/gcc/c-semantics.c
index e292d9f..4e27bec 100644
--- a/gcc/c-semantics.c
+++ b/gcc/c-semantics.c
@@ -31,6 +31,10 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
#include "varray.h"
#include "c-common.h"
#include "except.h"
+/* In order for the format checking to accept the C frontend
+ diagnostic framework extensions, you must define this token before
+ including toplev.h. */
+#define GCC_DIAG_STYLE __gcc_cdiag__
#include "toplev.h"
#include "flags.h"
#include "ggc.h"