Compile with -DNDEBUG

lib/nghttp2_map.c

@@ -189,6 +189,7 @@ static int map_resize(nghttp2_map *map, uint32_t new_tablelen,
   nghttp2_map_bucket *new_table;
   nghttp2_map_bucket *bkt;
   int rv;
+  (void)rv;
 
   new_table =
       nghttp2_mem_calloc(map->mem, new_tablelen, sizeof(nghttp2_map_bucket));

src/h2load_quic.cc

@@ -451,6 +451,7 @@ void Client::quic_close_connection() {
     break;
   default:
     assert(0);
+    abort();
   }
 
   if (nwrite < 0) {

src/shrpx_http3_upstream.cc

@@ -1842,6 +1842,7 @@ int Http3Upstream::http_acked_stream_data(Downstream *downstream,
 
   auto body = downstream->get_response_buf();
   auto drained = body->drain_mark(datalen);
+  (void)drained;
 
   assert(datalen == drained);
 

src/shrpx_mruby.cc

@@ -75,6 +75,7 @@ int MRubyContext::run_app(Downstream *downstream, int phase) {
     break;
   default:
     assert(0);
+    abort();
   }
 
   auto res = mrb_funcall(mrb_, app_, method, 1, env_);

src/shrpx_worker.cc

@@ -1036,6 +1036,7 @@ const UpstreamAddr *Worker::find_quic_upstream_addr(const Address &local_addr) {
     break;
   default:
     assert(0);
+    abort();
   }
 
   std::array<char, util::max_hostport> hostport_buf;