diff --git a/core-tests/src/network/dns.cpp b/core-tests/src/network/dns.cpp
index cc7cd230024..cd4256c6d1b 100644
--- a/core-tests/src/network/dns.cpp
+++ b/core-tests/src/network/dns.cpp
@@ -74,14 +74,7 @@ TEST(dns, cancel) {
 }
 
 TEST(dns, getaddrinfo) {
-    char buf[1024] = {};
-    swoole::network::GetaddrinfoRequest req = {};
-    req.hostname = "www.baidu.com";
-    req.family = AF_INET;
-    req.socktype = SOCK_STREAM;
-    req.protocol = 0;
-    req.service = nullptr;
-    req.result = buf;
+    swoole::GetaddrinfoRequest req("www.baidu.com", AF_INET, SOCK_STREAM, 0, "");
     ASSERT_EQ(swoole::network::getaddrinfo(&req), 0);
     ASSERT_GT(req.count, 0);
 
diff --git a/include/swoole_util.h b/include/swoole_util.h
index 8d6d10b11fb..2aa5a9d1721 100644
--- a/include/swoole_util.h
+++ b/include/swoole_util.h
@@ -153,7 +153,7 @@ class BitMap {
     }
 
     void clear() {
-        memset(array_, 0, get_array_size(n_bits_));
+        memset(array_, 0, sizeof(uint64_t) * get_array_size(n_bits_));
     }
 
     void set(size_t i) {
diff --git a/src/network/dns.cc b/src/network/dns.cc
index e3a62f17fb8..22ac3ab9dd8 100644
--- a/src/network/dns.cc
+++ b/src/network/dns.cc
@@ -777,21 +777,20 @@ int getaddrinfo(GetaddrinfoRequest *req) {
     for (ptr = result; ptr != nullptr; ptr = ptr->ai_next, i++) {
     }
     req->count = SW_MIN(i, SW_DNS_HOST_BUFFER_SIZE);
+    req->results.resize(req->count);
 
     for (ptr = result, i = 0; ptr != nullptr; ptr = ptr->ai_next, i++) {
-        char *buffer = (char *) &req->results[i];
         switch (ptr->ai_family) {
         case AF_INET:
-            memcpy(buffer, ptr->ai_addr, sizeof(struct sockaddr_in));
+            memcpy(&req->results[i], ptr->ai_addr, sizeof(struct sockaddr_in));
             break;
         case AF_INET6:
-            memcpy(buffer, ptr->ai_addr, sizeof(struct sockaddr_in6));
+            memcpy(&req->results[i], ptr->ai_addr, sizeof(struct sockaddr_in6));
             break;
         default:
             swoole_warning("unknown socket family[%d]", ptr->ai_family);
             break;
         }
-        i++;
         if (i == SW_DNS_HOST_BUFFER_SIZE) {
             break;
         }