1 files changed, 15 insertions, 4 deletions

diff --git a/src/corelib/io/qurl.cpp b/src/corelib/io/qurl.cpp
index d4b8b5f..79a8ce4 100644
--- a/src/corelib/io/qurl.cpp
+++ b/src/corelib/io/qurl.cpp
@@ -345,6 +345,7 @@ public:
     bool hasQuery;
     bool hasFragment;
     bool isValid;
+    bool isHostValid;
 
     char valueDelimiter;
     char pairDelimiter;
@@ -3138,10 +3139,11 @@ static void toPunycodeHelper(const QChar *s, int ucLength, QString *output)
 
 
 static const char * const idn_whitelist[] = {
-    "ac", "at",
-    "br",
+    "ac", "ar", "at",
+    "biz", "br",
     "cat", "ch", "cl", "cn",
     "de", "dk",
+    "es",
     "fi",
     "gr",
     "hu",
@@ -3155,6 +3157,9 @@ static const char * const idn_whitelist[] = {
     "se", "sh",
     "th", "tm", "tw",
     "vn",
+    "xn--mgbaam7a8h",           // UAE
+    "xn--mgberp4a5d4ar",        // Saudi Arabia
+    "xn--wgbh1c"                // Egypt
 };
 
 static QStringList *user_idn_whitelist = 0;
@@ -3313,6 +3318,7 @@ static QString qt_ACE_do(const QString &domain, AceOperation op)
             qt_nameprep(&result, prevLen);
             labelLength = result.length() - prevLen;
             register int toReserve = labelLength + 4 + 6; // "xn--" plus some extra bytes
+            aceForm.resize(0);
             if (toReserve > aceForm.capacity())
                 aceForm.reserve(toReserve);
             toPunycodeHelper(result.constData() + prevLen, result.size() - prevLen, &aceForm);
@@ -3349,6 +3355,7 @@ QUrlPrivate::QUrlPrivate()
     ref = 1;
     port = -1;
     isValid = false;
+    isHostValid = true;
     parsingMode = QUrl::TolerantMode;
     valueDelimiter = '=';
     pairDelimiter = '&';
@@ -3375,6 +3382,7 @@ QUrlPrivate::QUrlPrivate(const QUrlPrivate &copy)
       hasQuery(copy.hasQuery),
       hasFragment(copy.hasFragment),
       isValid(copy.isValid),
+      isHostValid(copy.isHostValid),
       valueDelimiter(copy.valueDelimiter),
       pairDelimiter(copy.pairDelimiter),
       stateFlags(copy.stateFlags),
@@ -3405,6 +3413,8 @@ QString QUrlPrivate::canonicalHost() const
             that->host = host.toLower();
     } else {
         that->host = qt_ACE_do(host, NormalizeAce);
+        if (that->host.isNull())
+            that->isHostValid = false;
     }
     return that->host;
 }
@@ -3481,6 +3491,7 @@ QString QUrlPrivate::authority(QUrl::FormattingOptions options) const
 
 void QUrlPrivate::setAuthority(const QString &auth)
 {
+    isHostValid = true;
     if (auth.isEmpty()) {
         setUserInfo(QString());
         host.clear();
@@ -4175,7 +4186,7 @@ bool QUrl::isValid() const
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Validated)) d->validate();
 
-    return d->isValid;
+    return d->isValid && d->isHostValid;
 }
 
 /*!
@@ -4427,7 +4438,6 @@ void QUrl::setAuthority(const QString &authority)
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
     detach();
     QURL_UNSETFLAG(d->stateFlags, QUrlPrivate::Validated | QUrlPrivate::Normalized);
-
     d->setAuthority(authority);
 }
 
@@ -4648,6 +4658,7 @@ void QUrl::setHost(const QString &host)
     if (!d) d = new QUrlPrivate;
     if (!QURL_HASFLAG(d->stateFlags, QUrlPrivate::Parsed)) d->parse();
     detach();
+    d->isHostValid = true;
     QURL_UNSETFLAG(d->stateFlags, QUrlPrivate::Validated | QUrlPrivate::Normalized | QUrlPrivate::HostCanonicalized);
 
     d->host = host;