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-rw-r--r--src/vppinfra/pool.h27
1 files changed, 15 insertions, 12 deletions
diff --git a/src/vppinfra/pool.h b/src/vppinfra/pool.h
index 10262e90ec7..747a7170800 100644
--- a/src/vppinfra/pool.h
+++ b/src/vppinfra/pool.h
@@ -352,18 +352,21 @@ do { \
typeof (P) _pool_var (new) = 0; \
pool_header_t * _pool_var (ph), * _pool_var (new_ph); \
u32 _pool_var (n) = pool_len (P); \
- _pool_var (new) = _vec_resize (_pool_var (new), _pool_var (n), \
- _pool_var (n) * sizeof ((P)[0]), \
- pool_aligned_header_bytes, (A)); \
- clib_memcpy_fast (_pool_var (new), (P), \
- _pool_var (n) * sizeof ((P)[0])); \
- _pool_var (ph) = pool_header (P); \
- _pool_var (new_ph) = pool_header (_pool_var (new)); \
- _pool_var (new_ph)->free_bitmap = \
- clib_bitmap_dup (_pool_var (ph)->free_bitmap); \
- _pool_var (new_ph)->free_indices = \
- vec_dup (_pool_var (ph)->free_indices); \
- _pool_var (new_ph)->max_elts = _pool_var (ph)->max_elts; \
+ if ((P)) \
+ { \
+ _pool_var (new) = _vec_resize (_pool_var (new), _pool_var (n), \
+ _pool_var (n) * sizeof ((P)[0]), \
+ pool_aligned_header_bytes, (A)); \
+ clib_memcpy_fast (_pool_var (new), (P), \
+ _pool_var (n) * sizeof ((P)[0])); \
+ _pool_var (ph) = pool_header (P); \
+ _pool_var (new_ph) = pool_header (_pool_var (new)); \
+ _pool_var (new_ph)->free_bitmap = \
+ clib_bitmap_dup (_pool_var (ph)->free_bitmap); \
+ _pool_var (new_ph)->free_indices = \
+ vec_dup (_pool_var (ph)->free_indices); \
+ _pool_var (new_ph)->max_elts = _pool_var (ph)->max_elts; \
+ } \
_pool_var (new); \
})