Add a failing test for #463 -- fix will be in Woodstox 6.2.5 when rel…

…eased

src/test/java/com/fasterxml/jackson/dataformat/xml/failing/XmlParserErrorHandling463Test.java

@@ -0,0 +1,27 @@
+package com.fasterxml.jackson.dataformat.xml.failing;
+
+import java.nio.charset.StandardCharsets;
+
+import com.fasterxml.jackson.core.exc.StreamReadException;
+import com.fasterxml.jackson.dataformat.xml.XmlMapper;
+import com.fasterxml.jackson.dataformat.xml.XmlTestBase;
+
+// [dataformat-xml#463]
+// (but root cause of https://github.com/FasterXML/woodstox/issues/123)
+public class XmlParserErrorHandling463Test extends XmlTestBase
+{
+    private final XmlMapper MAPPER = newMapper();
+
+    public void testInvalidXmlDecl() throws Exception
+    {
+        final byte[] doc = "<?xml version=\"1.1\" encoding=\"U\"?>".getBytes(StandardCharsets.UTF_8);
+        try {
+            MAPPER.readTree(doc);
+            fail("Should not pass");
+        } catch (StreamReadException e) {
+            verifyException(e, "Unsupported encoding: U");
+        } catch (RuntimeException e) {
+            fail("Should fail with specific `StreamReadException` but got: "+e);
+        }
+    }
+}