Fix #302

ion/src/main/java/com/fasterxml/jackson/dataformat/ion/IonParser.java

@@ -436,7 +436,13 @@ public Object getEmbeddedObject() throws IOException {
         if (_currToken == JsonToken.VALUE_EMBEDDED_OBJECT) {
             switch (_reader.getType()) {
             case TIMESTAMP:
-                return _reader.timestampValue();
+                try {
+                    return _reader.timestampValue();
+                } catch (IllegalArgumentException e) {
+                    throw _constructError(String.format(
+                            "Invalid embedded TIMESTAMP value, problem: %s", e.getMessage()),
+                            e);
+                }
             case BLOB:
             case CLOB:
                 return _reader.newBytes();

ion/src/test/java/com/fasterxml/jackson/dataformat/ion/misc/UncaughtExceptionsTest.java

@@ -0,0 +1,42 @@
+package com.fasterxml.jackson.dataformat.ion.misc;
+
+import java.net.URL;
+import java.util.Arrays;
+
+import org.junit.Test;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.dataformat.ion.IonObjectMapper;
+
+import static org.junit.Assert.*;
+
+/**
+ * A set of unit tests for reported issues where implementation does
+ * not catch exceptions like {@link NullPointerException} where it should.
+ */
+public class UncaughtExceptionsTest
+{
+    private final IonObjectMapper MAPPER = IonObjectMapper.builder().build();
+
+    // [dataformats-binary#302]
+    @Test
+    public void testUncaughtException302() throws Exception
+    {
+        URL poc = getClass().getResource("/data/issue-302.ion");
+        try {
+            MAPPER.readTree(poc);
+            fail("Should not pass with invalid content");
+        } catch (JsonProcessingException e) {
+            verifyException(e, "Invalid embedded TIMESTAMP");
+        }
+    }
+
+    void verifyException(Throwable e, String match)
+    {
+        String msg = e.getMessage();
+        String lmsg = (msg == null) ? "" : msg.toLowerCase();
+        if (lmsg.indexOf(match.toLowerCase()) < 0) {
+            fail("Expected an exception with a substrings ("+match+"): got one with message \""+msg+"\"");
+        }
+    }
+}

ion/src/test/resources/data/issue-302.ion

@@ -0,0 +1 @@
+(=V(#252222(=V(#252222(2_222-11-93((-84(22000n23mlock($0c

release-notes/CREDITS-2.x

@@ -197,3 +197,9 @@ Nick (manaigrn-amzn@github)
 * Contributed #270: (ion) Ion Polymorphic deserialization in 2.12 breaks wrt use of
   Native Type Ids when upgrading from 2.8
  (2.12.3)
+
+ZanderHuang@github:
+
+* Reported #302: `IllegalArgumentException` in `IonParser.getEmbeddedObject()`
+ (2.12.6)
+

release-notes/VERSION-2.x

@@ -10,6 +10,11 @@ Modules:
 === Releases ===
 ------------------------------------------------------------------------
 
+(not yet released)
+
+#302: `IllegalArgumentException` in `IonParser.getEmbeddedObject()`
+ (reported by ZanderHuang@github)
+
 2.12.5 (27-Aug-2021)
 
 No changes since 2.12.4