1 files changed, 25 insertions, 0 deletions
diff --git a/tests/auto/qtextscriptengine/tst_qtextscriptengine.cpp b/tests/auto/qtextscriptengine/tst_qtextscriptengine.cpp
index 6a1aaad63d..eafbebd80a 100644
--- a/tests/auto/qtextscriptengine/tst_qtextscriptengine.cpp
+++ b/tests/auto/qtextscriptengine/tst_qtextscriptengine.cpp
@@ -111,6 +111,8 @@ private slots:
 
     void mirroredChars_data();
     void mirroredChars();
+
+    void thaiIsolatedSaraAm();
 };
 
 tst_QTextScriptEngine::tst_QTextScriptEngine()
@@ -1239,5 +1241,28 @@ void tst_QTextScriptEngine::mirroredChars()
     }
 }
 
+void tst_QTextScriptEngine::thaiIsolatedSaraAm()
+{
+    if (QFontDatabase().families(QFontDatabase::Any).contains("Waree")) {
+        QString s;
+        s.append(QChar(0x0e33));
+
+        QTextLayout layout(s, QFont("Waree"));
+        layout.beginLayout();
+        layout.createLine();
+        layout.endLayout();
+
+        QTextEngine *e = layout.engine();
+        e->itemize();
+        e->shape(0);
+
+        QCOMPARE(e->layoutData->items[0].num_glyphs, ushort(3));
+
+        unsigned short *logClusters = e->layoutData->logClustersPtr;
+        QCOMPARE(logClusters[0], ushort(0));
+    } else
+        QSKIP("Cannot find Waree.", SkipAll);
+}
+
 QTEST_MAIN(tst_QTextScriptEngine)
 #include "tst_qtextscriptengine.moc"