Slice step should default to None

msimacek · msimacek · commit 5e6b691db16c · 2020-07-14T09:37:23.000+02:00
diff --git a/graalpython/com.oracle.graal.python/src/com/oracle/graal/python/nodes/subscript/SliceLiteralNode.java b/graalpython/com.oracle.graal.python/src/com/oracle/graal/python/nodes/subscript/SliceLiteralNode.java
@@ -104,7 +104,7 @@ private int castStop(VirtualFrame frame, Object o) {
     private int castStep(VirtualFrame frame, Object o) {
         if (castStepNode == null) {
             CompilerDirectives.transferToInterpreterAndInvalidate();
-            castStepNode = insert(CastToSliceComponentNode.create(1, Integer.MAX_VALUE));
+            castStepNode = insert(CastToSliceComponentNode.create(MISSING_INDEX, Integer.MAX_VALUE));
         }
         return castStepNode.execute(frame, o);
     }

Original file line number	Diff line number	Diff line change
`@@ -104,7 +104,7 @@ private int castStop(VirtualFrame frame, Object o) {`
`104`	`104`	`private int castStep(VirtualFrame frame, Object o) {`
`105`	`105`	`if (castStepNode == null) {`
`106`	`106`	`CompilerDirectives.transferToInterpreterAndInvalidate();`
`107`		`- castStepNode = insert(CastToSliceComponentNode.create(1, Integer.MAX_VALUE));`
	`107`	`+ castStepNode = insert(CastToSliceComponentNode.create(MISSING_INDEX, Integer.MAX_VALUE));`
`108`	`108`	`}`
`109`	`109`	`return castStepNode.execute(frame, o);`
`110`	`110`	`}`