Clear the error faster

include/beast/http/impl/basic_parser.ipp

@@ -94,7 +94,7 @@ put(ConstBufferSequence const& buffers,
     auto const last = buffers.end();
     if(p == last)
     {
-        ec = {};
+        ec.assign(0, ec.category());
         return 0;
     }
     if(std::next(p) == last)
@@ -198,7 +198,7 @@ loop:
         break;
 
     case state::complete:
-        ec = {};
+        ec.assign(0, ec.category());
         goto done;
     }
     if(p < p1 && ! is_done() && eager())
@@ -228,7 +228,7 @@ put_eof(error_code& ec)
             ec = error::partial_message;
             return;
         }
-        ec = {};
+        ec.assign(0, ec.category());
         return;
     }
     impl().on_complete(ec);
@@ -793,7 +793,7 @@ do_field(field f,
                 continue;
             }
         }
-        ec = {};
+        ec.assign(0, ec.category());
         return;
     }
 
@@ -832,7 +832,7 @@ do_field(field f,
             return;
         }
 
-        ec = {};
+        ec.assign(0, ec.category());
         len_ = v;
         f_ |= flagContentLength;
         return;
@@ -855,7 +855,7 @@ do_field(field f,
             return;
         }
 
-        ec = {};
+        ec.assign(0, ec.category());
         auto const v = token_list{value};
         auto const p = std::find_if(v.begin(), v.end(),
             [&](typename token_list::value_type const& s)
@@ -874,12 +874,12 @@ do_field(field f,
     // Upgrade
     if(f == field::upgrade)
     {
-        ec = {};
+        ec.assign(0, ec.category());
         f_ |= flagUpgrade;
         return;
     }
 
-    ec = {};
+    ec.assign(0, ec.category());
 }
 
 } // http

include/beast/http/impl/read.ipp

@@ -121,7 +121,7 @@ operator()(error_code ec, std::size_t bytes_transferred)
             if(p_.got_some())
             {
                 // caller sees EOF on next read
-                ec = {};
+                ec.assign(0, ec.category());
                 p_.put_eof(ec);
                 if(ec)
                     goto upcall;
@@ -139,7 +139,7 @@ operator()(error_code ec, std::size_t bytes_transferred)
         b_.consume(p_.put(b_.data(), ec));
         if(! ec || ec != http::error::need_more)
             goto do_upcall;
-        ec = {};
+        ec.assign(0, ec.category());
 
     do_read:
         try
@@ -570,7 +570,7 @@ read_header(
     parser.eager(false);
     if(parser.is_header_done())
     {
-        ec = {};
+        ec.assign(0, ec.category());
         return;
     }
     do
@@ -649,7 +649,7 @@ read(
     parser.eager(true);
     if(parser.is_done())
     {
-        ec = {};
+        ec.assign(0, ec.category());
         return;
     }
     do

include/beast/http/impl/write.ipp

@@ -56,7 +56,7 @@ class write_some_op
         operator()(error_code& ec,
             ConstBufferSequence const& buffer)
         {
-            ec = {};
+            ec.assign(0, ec.category());
             invoked = true;
             return op_.s_.async_write_some(
                 buffer, std::move(op_));
@@ -213,7 +213,7 @@ class write_op
         operator()(error_code& ec,
             ConstBufferSequence const& buffer)
         {
-            ec = {};
+            ec.assign(0, ec.category());
             invoked = true;
             return op_.s_.async_write_some(
                 buffer, std::move(op_));
@@ -537,7 +537,7 @@ write_some(SyncWriteStream& stream, serializer<
     detail::write_some_lambda<SyncWriteStream> f{stream};
     if(sr.is_done())
     {
-        ec = {};
+        ec.assign(0, ec.category());
         return;
     }
     sr.get(ec, f);
@@ -609,7 +609,7 @@ write_header(SyncWriteStream& stream, serializer<
     sr.split(true);
     if(sr.is_header_done())
     {
-        ec = {};
+        ec.assign(0, ec.category());
         return;
     }
     detail::write_lambda<SyncWriteStream> f{stream};
@@ -680,7 +680,7 @@ write(SyncWriteStream& stream, serializer<
     sr.split(false);
     if(sr.is_done())
     {
-        ec = {};
+        ec.assign(0, ec.category());
         return;
     }
     detail::write_lambda<SyncWriteStream> f{stream};
@@ -808,7 +808,7 @@ public:
     operator()(error_code& ec,
         ConstBufferSequence const& buffers) const
     {
-        ec = {};
+        ec.assign(0, ec.category());
         if(os_.fail())
             return;
         std::size_t bytes_transferred = 0;
@@ -868,7 +868,7 @@ operator<<(std::ostream& os,
         if(os.fail())
             break;
         if(ec == error::end_of_stream)
-            ec = {};
+            ec.assign(0, ec.category());
         if(ec)
         {
             os.setstate(std::ios::failbit);