Remove nested depth limitation. (#797)

* Remove nested depth limitation.

This commit removes the nested multi-bulk depth limitation of 7.
We do this by switching to pointer to pointer indirection and
growing the stack in chunks when needed.

See: #794, #421

1 files changed, 3 insertions, 1 deletions

diff --git a/read.h b/read.h
index af02aaf..6eff14c 100644
--- a/read.h
+++ b/read.h
@@ -97,7 +97,9 @@ typedef struct redisReader {
     size_t len; /* Buffer length */
     size_t maxbuf; /* Max length of unused buffer */
 
-    redisReadTask rstack[9];
+    redisReadTask **task;
+    int tasks;
+
     int ridx; /* Index of current read task */
     void *reply; /* Temporary reply pointer */