bugfix: fixed memory leak in debug log.

hawkxiang · web-flow · commit 0d6bb2bd3fb6 · 2020-12-14T10:58:30.000+08:00
diff --git a/src/subsys/ngx_subsys_lua_logby.c.tt2 b/src/subsys/ngx_subsys_lua_logby.c.tt2
@@ -73,6 +73,9 @@ ngx_stream_lua_log_handler(ngx_stream_session_t *r)
 #if (NGX_[% SUBSYS %]_LUA_HAVE_MALLOC_TRIM)
     ngx_uint_t                           trim_cycle, trim_nreq;
     ngx_[% subsys %]_lua_main_conf_t    *lmcf;
+#if (NGX_DEBUG)
+    ngx_int_t                            trim_ret;
+#endif
 #endif
     ngx_[% subsys %]_lua_loc_conf_t     *llcf;
     ngx_[% subsys %]_lua_ctx_t          *ctx;
@@ -92,8 +95,9 @@ ngx_stream_lua_log_handler(ngx_stream_session_t *r)
             lmcf->malloc_trim_req_count = 0;
 
 #if (NGX_DEBUG)
+            trim_ret = malloc_trim(1);
             ngx_log_debug1(NGX_LOG_DEBUG_[% SUBSYS %], r->connection->log, 0,
-                           "malloc_trim(1) returned %d", malloc_trim(1));
+                           "malloc_trim(1) returned %d", trim_ret);
 #else
             (void) malloc_trim(1);
 #endif
