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-rw-r--r--src/vppinfra/vec_bootstrap.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/vppinfra/vec_bootstrap.h b/src/vppinfra/vec_bootstrap.h
index 53968070c0e..5cf5d3b76a1 100644
--- a/src/vppinfra/vec_bootstrap.h
+++ b/src/vppinfra/vec_bootstrap.h
@@ -171,7 +171,8 @@ u32 vec_len_not_inline (void *v);
})
/** \brief Total number of elements that can fit into vector. */
-#define vec_max_len(v) (vec_capacity(v,0) / sizeof (v[0]))
+#define vec_max_len(v) \
+ ((v) ? (vec_capacity (v,0) - vec_header_bytes (0)) / sizeof (v[0]) : 0)
/** \brief Set vector length to a user-defined value */
#ifndef __COVERITY__ /* Coverity gets confused by ASSERT() */