Fix off-by-one error in primContextAt(Put)

Fixes #162
hpi-swa · Jan 22, 2025 · d209eff · d209eff
1 parent 6afa3b0
commit d209eff
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/...a.trufflesqueak/src/de/hpi/swa/trufflesqueak/nodes/primitives/impl/ContextPrimitives.java b/...a.trufflesqueak/src/de/hpi/swa/trufflesqueak/nodes/primitives/impl/ContextPrimitives.java
@@ -278,7 +278,7 @@ protected final AbstractSqueakObject findNextAvoidingMaterialization(final Conte
     @GenerateNodeFactory
     @SqueakPrimitive(indices = 210)
     protected abstract static class PrimContextAtNode extends AbstractPrimitiveNode implements BinaryPrimitiveFallback {
-        @Specialization(guards = {"index < receiver.getStackSize()"})
+        @Specialization(guards = {"index <= receiver.getStackSize()"})
         protected static final Object doContextObject(final ContextObject receiver, final long index,
                         @Bind("this") final Node node,
                         @Cached final ContextObjectReadNode readNode) {
@@ -289,7 +289,7 @@ protected static final Object doContextObject(final ContextObject receiver, fina
     @GenerateNodeFactory
     @SqueakPrimitive(indices = 211)
     protected abstract static class PrimContextAtPutNode extends AbstractPrimitiveNode implements TernaryPrimitiveFallback {
-        @Specialization(guards = "index < receiver.getStackSize()")
+        @Specialization(guards = "index <= receiver.getStackSize()")
         protected static final Object doContextObject(final ContextObject receiver, final long index, final Object value,
                         @Bind("this") final Node node,
                         @Cached final ContextObjectWriteNode writeNode) {