Fix exhausted array iterator pickling

Author: msimacek

graalpython/com.oracle.graal.python.test/src/tests/unittest_tags/test_array.txt

@@ -31,6 +31,7 @@
 *graalpython.lib-python.3.test.test_array.ByteTest.test_initialize_with_unicode
 *graalpython.lib-python.3.test.test_array.ByteTest.test_insert
 *graalpython.lib-python.3.test.test_array.ByteTest.test_iterationcontains
+*graalpython.lib-python.3.test.test_array.ByteTest.test_iterator_pickle
 *graalpython.lib-python.3.test.test_array.ByteTest.test_len
 *graalpython.lib-python.3.test.test_array.ByteTest.test_mul
 *graalpython.lib-python.3.test.test_array.ByteTest.test_obsolete_write_lock
@@ -87,6 +88,7 @@
 *graalpython.lib-python.3.test.test_array.DoubleTest.test_initialize_with_unicode
 *graalpython.lib-python.3.test.test_array.DoubleTest.test_insert
 *graalpython.lib-python.3.test.test_array.DoubleTest.test_iterationcontains
+*graalpython.lib-python.3.test.test_array.DoubleTest.test_iterator_pickle
 *graalpython.lib-python.3.test.test_array.DoubleTest.test_len
 *graalpython.lib-python.3.test.test_array.DoubleTest.test_mul
 *graalpython.lib-python.3.test.test_array.DoubleTest.test_obsolete_write_lock
@@ -140,6 +142,7 @@
 *graalpython.lib-python.3.test.test_array.FloatTest.test_initialize_with_unicode
 *graalpython.lib-python.3.test.test_array.FloatTest.test_insert
 *graalpython.lib-python.3.test.test_array.FloatTest.test_iterationcontains
+*graalpython.lib-python.3.test.test_array.FloatTest.test_iterator_pickle
 *graalpython.lib-python.3.test.test_array.FloatTest.test_len
 *graalpython.lib-python.3.test.test_array.FloatTest.test_mul
 *graalpython.lib-python.3.test.test_array.FloatTest.test_obsolete_write_lock
@@ -193,6 +196,7 @@
 *graalpython.lib-python.3.test.test_array.IntTest.test_initialize_with_unicode
 *graalpython.lib-python.3.test.test_array.IntTest.test_insert
 *graalpython.lib-python.3.test.test_array.IntTest.test_iterationcontains
+*graalpython.lib-python.3.test.test_array.IntTest.test_iterator_pickle
 *graalpython.lib-python.3.test.test_array.IntTest.test_len
 *graalpython.lib-python.3.test.test_array.IntTest.test_mul
 *graalpython.lib-python.3.test.test_array.IntTest.test_obsolete_write_lock
@@ -262,6 +266,7 @@
 *graalpython.lib-python.3.test.test_array.LongLongTest.test_initialize_with_unicode
 *graalpython.lib-python.3.test.test_array.LongLongTest.test_insert
 *graalpython.lib-python.3.test.test_array.LongLongTest.test_iterationcontains
+*graalpython.lib-python.3.test.test_array.LongLongTest.test_iterator_pickle
 *graalpython.lib-python.3.test.test_array.LongLongTest.test_len
 *graalpython.lib-python.3.test.test_array.LongLongTest.test_mul
 *graalpython.lib-python.3.test.test_array.LongLongTest.test_obsolete_write_lock
@@ -316,6 +321,7 @@
 *graalpython.lib-python.3.test.test_array.LongTest.test_initialize_with_unicode
 *graalpython.lib-python.3.test.test_array.LongTest.test_insert
 *graalpython.lib-python.3.test.test_array.LongTest.test_iterationcontains
+*graalpython.lib-python.3.test.test_array.LongTest.test_iterator_pickle
 *graalpython.lib-python.3.test.test_array.LongTest.test_len
 *graalpython.lib-python.3.test.test_array.LongTest.test_mul
 *graalpython.lib-python.3.test.test_array.LongTest.test_obsolete_write_lock
@@ -372,6 +378,7 @@
 *graalpython.lib-python.3.test.test_array.ShortTest.test_initialize_with_unicode
 *graalpython.lib-python.3.test.test_array.ShortTest.test_insert
 *graalpython.lib-python.3.test.test_array.ShortTest.test_iterationcontains
+*graalpython.lib-python.3.test.test_array.ShortTest.test_iterator_pickle
 *graalpython.lib-python.3.test.test_array.ShortTest.test_len
 *graalpython.lib-python.3.test.test_array.ShortTest.test_mul
 *graalpython.lib-python.3.test.test_array.ShortTest.test_obsolete_write_lock
@@ -421,6 +428,7 @@
 *graalpython.lib-python.3.test.test_array.UnicodeTest.test_index
 *graalpython.lib-python.3.test.test_array.UnicodeTest.test_initialize_with_unicode
 *graalpython.lib-python.3.test.test_array.UnicodeTest.test_insert
+*graalpython.lib-python.3.test.test_array.UnicodeTest.test_iterator_pickle
 *graalpython.lib-python.3.test.test_array.UnicodeTest.test_len
 *graalpython.lib-python.3.test.test_array.UnicodeTest.test_mul
 *graalpython.lib-python.3.test.test_array.UnicodeTest.test_obsolete_write_lock
@@ -475,6 +483,7 @@
 *graalpython.lib-python.3.test.test_array.UnsignedByteTest.test_initialize_with_unicode
 *graalpython.lib-python.3.test.test_array.UnsignedByteTest.test_insert
 *graalpython.lib-python.3.test.test_array.UnsignedByteTest.test_iterationcontains
+*graalpython.lib-python.3.test.test_array.UnsignedByteTest.test_iterator_pickle
 *graalpython.lib-python.3.test.test_array.UnsignedByteTest.test_len
 *graalpython.lib-python.3.test.test_array.UnsignedByteTest.test_mul
 *graalpython.lib-python.3.test.test_array.UnsignedByteTest.test_obsolete_write_lock
@@ -532,6 +541,7 @@
 *graalpython.lib-python.3.test.test_array.UnsignedIntTest.test_initialize_with_unicode
 *graalpython.lib-python.3.test.test_array.UnsignedIntTest.test_insert
 *graalpython.lib-python.3.test.test_array.UnsignedIntTest.test_iterationcontains
+*graalpython.lib-python.3.test.test_array.UnsignedIntTest.test_iterator_pickle
 *graalpython.lib-python.3.test.test_array.UnsignedIntTest.test_len
 *graalpython.lib-python.3.test.test_array.UnsignedIntTest.test_mul
 *graalpython.lib-python.3.test.test_array.UnsignedIntTest.test_obsolete_write_lock
@@ -588,6 +598,7 @@
 *graalpython.lib-python.3.test.test_array.UnsignedLongLongTest.test_initialize_with_unicode
 *graalpython.lib-python.3.test.test_array.UnsignedLongLongTest.test_insert
 *graalpython.lib-python.3.test.test_array.UnsignedLongLongTest.test_iterationcontains
+*graalpython.lib-python.3.test.test_array.UnsignedLongLongTest.test_iterator_pickle
 *graalpython.lib-python.3.test.test_array.UnsignedLongLongTest.test_len
 *graalpython.lib-python.3.test.test_array.UnsignedLongLongTest.test_mul
 *graalpython.lib-python.3.test.test_array.UnsignedLongLongTest.test_obsolete_write_lock
@@ -644,6 +655,7 @@
 *graalpython.lib-python.3.test.test_array.UnsignedLongTest.test_initialize_with_unicode
 *graalpython.lib-python.3.test.test_array.UnsignedLongTest.test_insert
 *graalpython.lib-python.3.test.test_array.UnsignedLongTest.test_iterationcontains
+*graalpython.lib-python.3.test.test_array.UnsignedLongTest.test_iterator_pickle
 *graalpython.lib-python.3.test.test_array.UnsignedLongTest.test_len
 *graalpython.lib-python.3.test.test_array.UnsignedLongTest.test_mul
 *graalpython.lib-python.3.test.test_array.UnsignedLongTest.test_obsolete_write_lock
@@ -700,6 +712,7 @@
 *graalpython.lib-python.3.test.test_array.UnsignedShortTest.test_initialize_with_unicode
 *graalpython.lib-python.3.test.test_array.UnsignedShortTest.test_insert
 *graalpython.lib-python.3.test.test_array.UnsignedShortTest.test_iterationcontains
+*graalpython.lib-python.3.test.test_array.UnsignedShortTest.test_iterator_pickle
 *graalpython.lib-python.3.test.test_array.UnsignedShortTest.test_len
 *graalpython.lib-python.3.test.test_array.UnsignedShortTest.test_mul
 *graalpython.lib-python.3.test.test_array.UnsignedShortTest.test_obsolete_write_lock

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/iterator/IteratorBuiltins.java

@@ -334,8 +334,13 @@ public abstract static class ReduceNode extends PythonUnaryBuiltinNode {
         @Specialization
         public Object reduce(VirtualFrame frame, PArrayIterator self,
                         @CachedContext(PythonLanguage.class) PythonContext context,
+                        @Cached ConditionProfile exhaustedProfile,
                         @Cached.Shared("pol") @CachedLibrary(limit = "1") PythonObjectLibrary pol) {
-            return reduceInternal(frame, self.array, self.getIndex(), context, pol);
+            if (!exhaustedProfile.profile(self.isExhausted())) {
+                return reduceInternal(frame, self.array, self.getIndex(), context, pol);
+            } else {
+                return reduceInternal(frame, factory().createEmptyTuple(), context, pol);
+            }
         }
 
         @Specialization