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-rw-r--r--misc/sys/cdefs.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/misc/sys/cdefs.h b/misc/sys/cdefs.h
index 6f562e56d0..eb192cca49 100644
--- a/misc/sys/cdefs.h
+++ b/misc/sys/cdefs.h
@@ -271,6 +271,13 @@
 # define __wur /* Ignore */
 #endif
 
+/* Forces a function to be always inlined.  */
+#if __GNUC_PREREQ (3,2)
+# define __always_inline __inline __attribute__ ((__always_inline__))
+#else
+# define __always_inline __inline
+#endif
+
 /* It is possible to compile containing GCC extensions even if GCC is
    run in pedantic mode if the uses are carefully marked using the
    `__extension__' keyword.  But this is not generally available before