# HG changeset patch
# User Andrey Belov <defan@nginx.com>
# Date 1343831828 0
# Node ID 6e37004865fbaaea2950cf0db9ddc599022d1c40
# Parent  3032f4854b818c1c507f3c69b67ee0bf501e1743
Reorder checks in ngx_shared_memory_add() for more consistent error messages.

diff --git a/src/core/ngx_cycle.c b/src/core/ngx_cycle.c
--- a/src/core/ngx_cycle.c
+++ b/src/core/ngx_cycle.c
@@ -1285,6 +1285,14 @@ ngx_shared_memory_add(ngx_conf_t *cf, ng
             continue;
         }
 
+        if (tag != shm_zone[i].tag) {
+            ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+                            "the shared memory zone \"%V\" is "
+                            "already declared for a different use",
+                            &shm_zone[i].shm.name);
+            return NULL;
+        }
+
         if (size && size != shm_zone[i].shm.size) {
             ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
                             "the size %uz of shared memory zone \"%V\" "
@@ -1293,14 +1301,6 @@ ngx_shared_memory_add(ngx_conf_t *cf, ng
             return NULL;
         }
 
-        if (tag != shm_zone[i].tag) {
-            ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
-                            "the shared memory zone \"%V\" is "
-                            "already declared for a different use",
-                            &shm_zone[i].shm.name);
-            return NULL;
-        }
-
         return &shm_zone[i];
     }