Always imbue C locale when using istringstream.

src/vmime/misc/importanceHelper.cpp

@@ -67,6 +67,8 @@ importanceHelper::Importance importanceHelper::getImportanceHeader(shared_ptr <c
 		int n = IMPORTANCE_NORMAL;
 
 		std::istringstream iss(value);
+		iss.imbue(std::locale::classic());
+
 		iss >> n;
 
 		Importance i = IMPORTANCE_NORMAL;

src/vmime/net/pop3/POP3Connection.cpp

@@ -396,6 +396,8 @@ void POP3Connection::authenticateSASL()
 			const string list(x.begin() + 5, x.end());
 
 			std::istringstream iss(list);
+			iss.imbue(std::locale::classic());
+
 			string mech;
 
 			while (iss >> mech)

src/vmime/net/pop3/POP3Folder.cpp

@@ -144,6 +144,7 @@ void POP3Folder::open(const int mode, bool failIfModeIsNotAvailable)
 			throw exceptions::command_error("STAT", response->getFirstLine());
 
 		std::istringstream iss(response->getText());
+		iss.imbue(std::locale::classic());
 		iss >> m_messageCount;
 
 		if (iss.fail())
@@ -372,6 +373,7 @@ void POP3Folder::fetchMessages(std::vector <shared_ptr <message> >& msg, const f
 					size_t size = 0;
 
 					std::istringstream iss((*x).second);
+					iss.imbue(std::locale::classic());
 					iss >> size;
 
 					m->m_size = size;
@@ -456,6 +458,7 @@ void POP3Folder::fetchMessage(shared_ptr <message> msg, const fetchAttributes& o
 				size_t size = 0;
 
 				std::istringstream iss(string(it, responseText.end()));
+				iss.imbue(std::locale::classic());
 				iss >> size;
 
 				dynamicCast <POP3Message>(msg)->m_size = size;
@@ -677,6 +680,7 @@ shared_ptr <folderStatus> POP3Folder::getStatus()
 	size_t count = 0;
 
 	std::istringstream iss(response->getText());
+	iss.imbue(std::locale::classic());
 	iss >> count;
 
 	shared_ptr <POP3FolderStatus> status = make_shared <POP3FolderStatus>();

src/vmime/net/smtp/SMTPConnection.cpp

@@ -234,7 +234,9 @@ void SMTPConnection::helo()
 		for (size_t i = 1, n = resp->getLineCount() ; i < n ; ++i)
 		{
 			const string line = resp->getLineAt(i).getText();
+
 			std::istringstream iss(line);
+			iss.imbue(std::locale::classic());
 
 			string ext;
 			iss >> ext;

src/vmime/net/smtp/SMTPResponse.cpp

@@ -217,6 +217,7 @@ const SMTPResponse::enhancedStatusCode SMTPResponse::extractEnhancedCode(const s
 	enhancedStatusCode enhCode;
 
 	std::istringstream iss(responseText);
+	iss.imbue(std::locale::classic());
 
 	if (std::isdigit(iss.peek()))
 	{

src/vmime/relay.cpp

@@ -79,6 +79,8 @@ void relay::parseImpl
 		std::istringstream iss(string
 			(buffer.begin() + position, buffer.begin() + position + (p - pstart)));
 
+		iss.imbue(std::locale::classic());
+
 		string word;
 		std::vector <string> previous;
 

src/vmime/utility/url.cpp

@@ -256,8 +256,9 @@ void url::parse(const string& str)
 		throw exceptions::malformed_url("Port can only contain digits");
 
 	std::istringstream iss(port);
-	port_t portNum = 0;
+	iss.imbue(std::locale::classic());
 
+	port_t portNum = 0;
 	iss >> portNum;
 
 	if (portNum == 0)