From f16eaadd4ff4ebebc5661e5570301ab0c31bf1f6 Mon Sep 17 00:00:00 2001
From: Guy Benoish <guy.benoish@redislabs.com>
Date: Wed, 18 Mar 2020 18:34:27 +0530
Subject: Allow RM_GetContextFlags to work with ctx==NULL

---
 src/module.c | 30 ++++++++++++++++--------------
 1 file changed, 16 insertions(+), 14 deletions(-)

diff --git a/src/module.c b/src/module.c
index bbd54082c..a5f4219fd 100644
--- a/src/module.c
+++ b/src/module.c
@@ -1848,20 +1848,22 @@ int RM_GetContextFlags(RedisModuleCtx *ctx) {
 
     int flags = 0;
     /* Client specific flags */
-    if (ctx->client) {
-        if (ctx->client->flags & CLIENT_LUA)
-         flags |= REDISMODULE_CTX_FLAGS_LUA;
-        if (ctx->client->flags & CLIENT_MULTI)
-         flags |= REDISMODULE_CTX_FLAGS_MULTI;
-        /* Module command recieved from MASTER, is replicated. */
-        if (ctx->client->flags & CLIENT_MASTER)
-         flags |= REDISMODULE_CTX_FLAGS_REPLICATED;
-    }
-
-    /* For DIRTY flags, we need the blocked client if used */
-    client *c = ctx->blocked_client ? ctx->blocked_client->client : ctx->client;
-    if (c && (c->flags & (CLIENT_DIRTY_CAS|CLIENT_DIRTY_EXEC))) {
-        flags |= REDISMODULE_CTX_FLAGS_MULTI_DIRTY;
+    if (ctx) {
+        if (ctx->client) {
+            if (ctx->client->flags & CLIENT_LUA)
+             flags |= REDISMODULE_CTX_FLAGS_LUA;
+            if (ctx->client->flags & CLIENT_MULTI)
+             flags |= REDISMODULE_CTX_FLAGS_MULTI;
+            /* Module command recieved from MASTER, is replicated. */
+            if (ctx->client->flags & CLIENT_MASTER)
+             flags |= REDISMODULE_CTX_FLAGS_REPLICATED;
+        }
+
+        /* For DIRTY flags, we need the blocked client if used */
+        client *c = ctx->blocked_client ? ctx->blocked_client->client : ctx->client;
+        if (c && (c->flags & (CLIENT_DIRTY_CAS|CLIENT_DIRTY_EXEC))) {
+            flags |= REDISMODULE_CTX_FLAGS_MULTI_DIRTY;
+        }
     }
 
     if (server.cluster_enabled)
-- 
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