Core: enclosed parameters of the ngx_buf.h macros in parentheses.
diff --git a/src/core/ngx_buf.h b/src/core/ngx_buf.h
index 12781a7..4b66562 100644
--- a/src/core/ngx_buf.h
+++ b/src/core/ngx_buf.h
@@ -125,20 +125,20 @@
#define NGX_CHAIN_ERROR (ngx_chain_t *) NGX_ERROR
-#define ngx_buf_in_memory(b) (b->temporary || b->memory || b->mmap)
-#define ngx_buf_in_memory_only(b) (ngx_buf_in_memory(b) && !b->in_file)
+#define ngx_buf_in_memory(b) ((b)->temporary || (b)->memory || (b)->mmap)
+#define ngx_buf_in_memory_only(b) (ngx_buf_in_memory(b) && !(b)->in_file)
#define ngx_buf_special(b) \
- ((b->flush || b->last_buf || b->sync) \
- && !ngx_buf_in_memory(b) && !b->in_file)
+ (((b)->flush || (b)->last_buf || (b)->sync) \
+ && !ngx_buf_in_memory(b) && !(b)->in_file)
#define ngx_buf_sync_only(b) \
- (b->sync \
- && !ngx_buf_in_memory(b) && !b->in_file && !b->flush && !b->last_buf)
+ ((b)->sync && !ngx_buf_in_memory(b) \
+ && !(b)->in_file && !(b)->flush && !(b)->last_buf)
#define ngx_buf_size(b) \
- (ngx_buf_in_memory(b) ? (off_t) (b->last - b->pos): \
- (b->file_last - b->file_pos))
+ (ngx_buf_in_memory(b) ? (off_t) ((b)->last - (b)->pos): \
+ ((b)->file_last - (b)->file_pos))
ngx_buf_t *ngx_create_temp_buf(ngx_pool_t *pool, size_t size);
ngx_chain_t *ngx_create_chain_of_bufs(ngx_pool_t *pool, ngx_bufs_t *bufs);
@@ -149,8 +149,8 @@
ngx_chain_t *ngx_alloc_chain_link(ngx_pool_t *pool);
#define ngx_free_chain(pool, cl) \
- cl->next = pool->chain; \
- pool->chain = cl
+ (cl)->next = (pool)->chain; \
+ (pool)->chain = (cl)