From 984f8f1a92a97be204fa428d3db02fa8046f28e6 Mon Sep 17 00:00:00 2001
From: Peter Dimov <pdimov@gmail.com>
Date: Thu, 16 Sep 2021 18:04:27 +0300
Subject: [PATCH] Reorder constructor overloads

---
 doc/system/reference.adoc                  | 26 +++++++++++-----------
 include/boost/system/detail/error_code.hpp | 13 ++++++-----
 2 files changed, 20 insertions(+), 19 deletions(-)

diff --git a/doc/system/reference.adoc b/doc/system/reference.adoc
index 52fe2fe..ba6fdc4 100644
--- a/doc/system/reference.adoc
+++ b/doc/system/reference.adoc
@@ -564,12 +564,12 @@ namespace boost {
       constexpr error_code() noexcept;
       constexpr error_code( int val, const error_category & cat ) noexcept;
 
-      template <class ErrorCodeEnum>
-        constexpr error_code( ErrorCodeEnum e ) noexcept;
-
       error_code( int val, const error_category & cat,
         boost::source_location const * loc ) noexcept;
 
+      template <class ErrorCodeEnum>
+        constexpr error_code( ErrorCodeEnum e ) noexcept;
+
       error_code( std::error_code const& ec ) noexcept;
 
       // modifiers:
@@ -684,16 +684,6 @@ constexpr error_code( int val, const error_category & cat ) noexcept;
 +
 Ensures: :: `value() == val`; `category() == cat`; `!has_location()`.
 
-```
-template <class ErrorCodeEnum>
-  constexpr error_code( ErrorCodeEnum e ) noexcept;
-```
-[none]
-* {blank}
-+
-Ensures: :: `*this == make_error_code( e )`.
-Remarks: :: This constructor is only enabled when `is_error_code_enum<ErrorCodeEnum>::value` is `true`.
-
 ```
 error_code( int val, const error_category & cat,
   boost::source_location const * loc ) noexcept;
@@ -704,6 +694,16 @@ error_code( int val, const error_category & cat,
 Requires: :: `loc` points to a valid `boost::source_location` object with static storage duration.
 Ensures: :: `value() == val`; `category() == cat`; `has_location()`; `&location() == loc`.
 
+```
+template <class ErrorCodeEnum>
+  constexpr error_code( ErrorCodeEnum e ) noexcept;
+```
+[none]
+* {blank}
++
+Ensures: :: `*this == make_error_code( e )`.
+Remarks: :: This constructor is only enabled when `is_error_code_enum<ErrorCodeEnum>::value` is `true`.
+
 ```
 error_code( std::error_code const & ec ) noexcept;
 ```
diff --git a/include/boost/system/detail/error_code.hpp b/include/boost/system/detail/error_code.hpp
index 5756c8d..68c73c5 100644
--- a/include/boost/system/detail/error_code.hpp
+++ b/include/boost/system/detail/error_code.hpp
@@ -98,12 +98,6 @@ public:
         d1_.cat_ = &cat;
     }
 
-    template<class ErrorCodeEnum> BOOST_SYSTEM_CONSTEXPR error_code( ErrorCodeEnum e,
-        typename detail::enable_if<is_error_code_enum<ErrorCodeEnum>::value>::type* = 0 ) BOOST_NOEXCEPT
-    {
-        *this = make_error_code( e );
-    }
-
     error_code( int val, const error_category & cat, source_location const * loc ) BOOST_NOEXCEPT:
         d1_(), lc_flags_( ( loc? reinterpret_cast<boost::uintptr_t>( loc ): 2 ) | +detail::failed_impl( val, cat ) )
     {
@@ -111,6 +105,13 @@ public:
         d1_.cat_ = &cat;
     }
 
+    template<class ErrorCodeEnum> BOOST_SYSTEM_CONSTEXPR error_code( ErrorCodeEnum e,
+        typename detail::enable_if<is_error_code_enum<ErrorCodeEnum>::value>::type* = 0 ) BOOST_NOEXCEPT:
+        d1_(), lc_flags_( 0 )
+    {
+        *this = make_error_code( e );
+    }
+
 #if defined(BOOST_SYSTEM_HAS_SYSTEM_ERROR)
 
     error_code( std::error_code const& ec ) BOOST_NOEXCEPT: