[GR-12234] Add specialization for SetItemScalarNode

PullRequest: graalpython/251

Author: timfel

graalpython/com.oracle.graal.python.test/src/tests/test_array.py

@@ -85,3 +85,14 @@ def test_add():
     else:
         assert False
 
+
+def test_add_int_to_long_storage():
+    x = [2147483648, 1]
+    x[0] = 42 # should not raise
+    assert x[0] == 42
+
+def test_add_int_to_long_array():
+    from array import array
+    y = array('l', [1, 2])
+    y[0] = 42 # should not raise
+    assert y[0] == 42

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/common/SequenceStorageNodes.java

@@ -847,6 +847,11 @@ protected void doLong(LongSequenceStorage storage, int idx, long value) {
             storage.setLongItemNormalized(idx, value);
         }
 
+        @Specialization
+        protected void doLong(LongSequenceStorage storage, int idx, int value) {
+            storage.setLongItemNormalized(idx, value);
+        }
+
         @Specialization(guards = "!value.isNative()")
         protected void doLong(LongSequenceStorage storage, int idx, PInt value) {
             try {