fix build: ngx_str_t::len may be used uninitialized in this function

ZigzagAK · web-flow · commit a9ba179546ae · 2019-12-08T16:08:38.000+03:00
diff --git a/src/ngx_dynamic_upstream_op.cpp b/src/ngx_dynamic_upstream_op.cpp
@@ -184,7 +184,7 @@ equals(PeerT *peer, ngx_str_t server, ngx_str_t name)
 static ngx_str_t
 ngx_str_shm(ngx_slab_pool_t *shpool, ngx_str_t *s)
 {
-    ngx_str_t  sh;
+    ngx_str_t  sh = ngx_null_string;
     sh.data = ngx_shm_calloc<u_char>(shpool, s->len);
     if (sh.data != NULL) {
         ngx_memcpy(sh.data, s->data, s->len);

Original file line number	Diff line number	Diff line change
`@@ -184,7 +184,7 @@ equals(PeerT *peer, ngx_str_t server, ngx_str_t name)`
`184`	`184`	`static ngx_str_t`
`185`	`185`	`ngx_str_shm(ngx_slab_pool_t shpool, ngx_str_t s)`
`186`	`186`	`{`
`187`		`- ngx_str_t sh;`
	`187`	`+ ngx_str_t sh = ngx_null_string;`
`188`	`188`	`sh.data = ngx_shm_calloc<u_char>(shpool, s->len);`
`189`	`189`	`if (sh.data != NULL) {`
`190`	`190`	`ngx_memcpy(sh.data, s->data, s->len);`