Fix results of number() queries for zero and non-number values

Use xs:string() to test whether a value is empty, instead of using a
simple boolean check which fails for zero-type values. This fix also
means 'NaN' is returned for non-number (including empty) values.

Task-number: QTBUG-16423, QTBUG-16265
Reviewed-by: Michael Brasser

1 files changed, 1 insertions, 1 deletions

diff --git a/src/declarative/util/qdeclarativexmllistmodel.cpp b/src/declarative/util/qdeclarativexmllistmodel.cpp
index 49a12b1..f5c3ad4 100644
--- a/src/declarative/util/qdeclarativexmllistmodel.cpp
+++ b/src/declarative/util/qdeclarativexmllistmodel.cpp
@@ -382,7 +382,7 @@ void QDeclarativeXmlQuery::doSubQueryJob()
     for (int i = 0; i < queries.size(); ++i) {
         QList<QVariant> resultList;
         if (!queries[i].isEmpty()) {
-            subquery.setQuery(m_prefix + QLatin1String("(let $v := ") + queries[i] + QLatin1String(" return if ($v) then ") + queries[i] + QLatin1String(" else \"\")"));
+            subquery.setQuery(m_prefix + QLatin1String("(let $v := string(") + queries[i] + QLatin1String(") return if ($v) then ") + queries[i] + QLatin1String(" else \"\")"));
             if (subquery.isValid()) {
                 QXmlResultItems resultItems;
                 subquery.evaluateTo(&resultItems);