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-rw-r--r--sax/source/expatwrap/saxwriter.cxx1
1 files changed, 1 insertions, 0 deletions
diff --git a/sax/source/expatwrap/saxwriter.cxx b/sax/source/expatwrap/saxwriter.cxx
index 7eb599a5cfc6..552447dda2e6 100644
--- a/sax/source/expatwrap/saxwriter.cxx
+++ b/sax/source/expatwrap/saxwriter.cxx
@@ -578,6 +578,7 @@ void CheckValidName(OUString const& rName)
auto const c(rName[i]);
if (c == ':')
{
+ // see https://www.w3.org/TR/REC-xml-names/#ns-qualnames
assert(!hasColon && "only one colon allowed");
hasColon = true;
}