From 331beee1a610af134bb7dd03ffa40266ad5f79b5 Mon Sep 17 00:00:00 2001
From: Christopher Kohlhoff <chris@kohlhoff.com>
Date: Mon, 24 Sep 2007 13:21:03 +0000
Subject: [PATCH] Check whether exceptions are enabled on the output iostream
 and throw or not throw errors accordingly.

[SVN r39504]
---
 include/boost/asio/ip/address_v4.hpp     |  7 ++++-
 include/boost/asio/ip/address_v6.hpp     |  7 ++++-
 include/boost/asio/ip/basic_endpoint.hpp | 40 +++++++++++++++++++-----
 3 files changed, 44 insertions(+), 10 deletions(-)

diff --git a/include/boost/asio/ip/address_v4.hpp b/include/boost/asio/ip/address_v4.hpp
index 5dad35fc..ed103c3f 100644
--- a/include/boost/asio/ip/address_v4.hpp
+++ b/include/boost/asio/ip/address_v4.hpp
@@ -269,7 +269,12 @@ std::basic_ostream<Elem, Traits>& operator<<(
   boost::system::error_code ec;
   std::string s = addr.to_string(ec);
   if (ec)
-    os.setstate(std::ios_base::failbit);
+  {
+    if (os.exceptions() & std::ios::failbit)
+      boost::asio::detail::throw_error(ec);
+    else
+      os.setstate(std::ios_base::failbit);
+  }
   else
     for (std::string::iterator i = s.begin(); i != s.end(); ++i)
       os << os.widen(*i);
diff --git a/include/boost/asio/ip/address_v6.hpp b/include/boost/asio/ip/address_v6.hpp
index 029e289f..a95b56f5 100644
--- a/include/boost/asio/ip/address_v6.hpp
+++ b/include/boost/asio/ip/address_v6.hpp
@@ -387,7 +387,12 @@ std::basic_ostream<Elem, Traits>& operator<<(
   boost::system::error_code ec;
   std::string s = addr.to_string(ec);
   if (ec)
-    os.setstate(std::ios_base::failbit);
+  {
+    if (os.exceptions() & std::ios::failbit)
+      boost::asio::detail::throw_error(ec);
+    else
+      os.setstate(std::ios_base::failbit);
+  }
   else
     for (std::string::iterator i = s.begin(); i != s.end(); ++i)
       os << os.widen(*i);
diff --git a/include/boost/asio/ip/basic_endpoint.hpp b/include/boost/asio/ip/basic_endpoint.hpp
index 66bfe993..557312cb 100644
--- a/include/boost/asio/ip/basic_endpoint.hpp
+++ b/include/boost/asio/ip/basic_endpoint.hpp
@@ -342,11 +342,23 @@ std::ostream& operator<<(std::ostream& os,
     const basic_endpoint<InternetProtocol>& endpoint)
 {
   const address& addr = endpoint.address();
-  if (addr.is_v4())
-    os << addr.to_string();
+  boost::system::error_code ec;
+  std::string a = addr.to_string(ec);
+  if (ec)
+  {
+    if (os.exceptions() & std::ios::failbit)
+      boost::asio::detail::throw_error(ec);
+    else
+      os.setstate(std::ios_base::failbit);
+  }
   else
-    os << '[' << addr.to_string() << ']';
-  os << ':' << endpoint.port();
+  {
+    if (addr.is_v4())
+      os << a;
+    else
+      os << '[' << a << ']';
+    os << ':' << endpoint.port();
+  }
   return os;
 }
 #else // BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
@@ -356,11 +368,23 @@ std::basic_ostream<Elem, Traits>& operator<<(
     const basic_endpoint<InternetProtocol>& endpoint)
 {
   const address& addr = endpoint.address();
-  if (addr.is_v4())
-    os << addr.to_string();
+  boost::system::error_code ec;
+  std::string a = addr.to_string(ec);
+  if (ec)
+  {
+    if (os.exceptions() & std::ios::failbit)
+      boost::asio::detail::throw_error(ec);
+    else
+      os.setstate(std::ios_base::failbit);
+  }
   else
-    os << '[' << addr.to_string() << ']';
-  os << ':' << endpoint.port();
+  {
+    if (addr.is_v4())
+      os << a;
+    else
+      os << '[' << a << ']';
+    os << ':' << endpoint.port();
+  }
   return os;
 }
 #endif // BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))