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-rw-r--r--libio/libio.h1
1 files changed, 0 insertions, 1 deletions
diff --git a/libio/libio.h b/libio/libio.h
index c188814ccc..3a93807efc 100644
--- a/libio/libio.h
+++ b/libio/libio.h
@@ -90,7 +90,6 @@ typedef union
 /* Bits for the _flags2 field.  */
 #define _IO_FLAGS2_MMAP 1
 #define _IO_FLAGS2_NOTCANCEL 2
-#define _IO_FLAGS2_FORTIFY 4
 #define _IO_FLAGS2_USER_WBUF 8
 #define _IO_FLAGS2_NOCLOSE 32
 #define _IO_FLAGS2_CLOEXEC 64