Merged with the default branch.

5 files changed, 14 insertions, 10 deletions

diff --git a/src/core/nginx.h b/src/core/nginx.h
index 6b134945e..bc4af23af 100644
--- a/src/core/nginx.h
+++ b/src/core/nginx.h
@@ -9,8 +9,8 @@
 #define _NGINX_H_INCLUDED_
 
 
-#define nginx_version      1021003
-#define NGINX_VERSION      "1.21.3"
+#define nginx_version      1021004
+#define NGINX_VERSION      "1.21.4"
 #define NGINX_VER          "nginx/" NGINX_VERSION
 
 #ifdef NGX_BUILD
diff --git a/src/core/ngx_buf.c b/src/core/ngx_buf.c
index c3783c446..811f24d96 100644
--- a/src/core/ngx_buf.c
+++ b/src/core/ngx_buf.c
@@ -203,16 +203,16 @@ ngx_chain_update_chains(ngx_pool_t *p, ngx_chain_t **free, ngx_chain_t **busy,
     while (*busy) {
         cl = *busy;
 
-        if (ngx_buf_size(cl->buf) != 0) {
-            break;
-        }
-
         if (cl->buf->tag != tag) {
             *busy = cl->next;
             ngx_free_chain(p, cl);
             continue;
         }
 
+        if (ngx_buf_size(cl->buf) != 0) {
+            break;
+        }
+
         cl->buf->pos = cl->buf->start;
         cl->buf->last = cl->buf->start;
 
diff --git a/src/core/ngx_hash.c b/src/core/ngx_hash.c
index d9c157c1d..8215c2717 100644
--- a/src/core/ngx_hash.c
+++ b/src/core/ngx_hash.c
@@ -274,6 +274,10 @@ ngx_hash_init(ngx_hash_init_t *hinit, ngx_hash_key_t *names, ngx_uint_t nelts)
     }
 
     for (n = 0; n < nelts; n++) {
+        if (names[n].key.data == NULL) {
+            continue;
+        }
+
         if (hinit->bucket_size < NGX_HASH_ELT_SIZE(&names[n]) + sizeof(void *))
         {
             ngx_log_error(NGX_LOG_EMERG, hinit->pool->log, 0,
diff --git a/src/core/ngx_output_chain.c b/src/core/ngx_output_chain.c
index 5c3dbe872..fd4603b19 100644
--- a/src/core/ngx_output_chain.c
+++ b/src/core/ngx_output_chain.c
@@ -803,6 +803,10 @@ ngx_chain_writer(void *data, ngx_chain_t *in)
         return NGX_ERROR;
     }
 
+    if (chain && c->write->ready) {
+        ngx_post_event(c->write, &ngx_posted_next_events);
+    }
+
     for (cl = ctx->out; cl && cl != chain; /* void */) {
         ln = cl;
         cl = cl->next;
diff --git a/src/core/ngx_times.c b/src/core/ngx_times.c
index 7964b008f..16788c98c 100644
--- a/src/core/ngx_times.c
+++ b/src/core/ngx_times.c
@@ -200,10 +200,6 @@ ngx_monotonic_time(time_t sec, ngx_uint_t msec)
 
 #if defined(CLOCK_MONOTONIC_FAST)
     clock_gettime(CLOCK_MONOTONIC_FAST, &ts);
-
-#elif defined(CLOCK_MONOTONIC_COARSE)
-    clock_gettime(CLOCK_MONOTONIC_COARSE, &ts);
-
 #else
     clock_gettime(CLOCK_MONOTONIC, &ts);
 #endif