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-rw-r--r--lib/birdlib.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/birdlib.h b/lib/birdlib.h
index c82082c1..317b5202 100644
--- a/lib/birdlib.h
+++ b/lib/birdlib.h
@@ -14,9 +14,12 @@
/* Ugly structure offset handling macros */
+struct align_probe { char x; long int y; };
+
#define OFFSETOF(s, i) ((size_t) &((s *)0)->i)
#define SKIP_BACK(s, i, p) ((s *)((char *)p - OFFSETOF(s, i)))
#define BIRD_ALIGN(s, a) (((s)+a-1)&~(a-1))
+#define CPU_STRUCT_ALIGN (sizeof(struct align_probe))
/* Utility macros */