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-rw-r--r--src/corelib/io/qurlidna.cpp9
1 files changed, 9 insertions, 0 deletions
diff --git a/src/corelib/io/qurlidna.cpp b/src/corelib/io/qurlidna.cpp
index fb74fc7a64..b5774a0dc8 100644
--- a/src/corelib/io/qurlidna.cpp
+++ b/src/corelib/io/qurlidna.cpp
@@ -45,6 +45,15 @@
#include <algorithm>
+/* NOTE: IDNA 2003 is based on Unicode 3.2
+
+ As a result, the assorted Unicode data below snould *not* be updated as part
+ of our routine updates to UCS (see ../text/qt_attributions.json and
+ util/unicode/). See QTBUG-85323 and RFCs 3491, 3454.
+
+ TODO (QTBUG-85371): Update to IDNA 2008.
+*/
+
QT_BEGIN_NAMESPACE
// needed by the punycode encoder/decoder