Saving and loading projection kind of array element type in bytecode.

compiler/backend/src/org/jetbrains/jet/codegen/signature/BothSignatureWriter.java

@@ -166,7 +166,7 @@ public class BothSignatureWriter {
                 writeClassEnd();
                 return;
             case Type.ARRAY:
-                writeArrayType(nullable);
+                writeArrayType(nullable, Variance.INVARIANT);
                 writeAsmType(asmType.getElementType(), false, kotlinTypeName);
                 writeArrayEnd();
                 return;
@@ -235,9 +235,9 @@ public class BothSignatureWriter {
         jetSignatureWriter.visitEnd();
     }
 
-    public void writeArrayType(boolean nullable) {
+    public void writeArrayType(boolean nullable, Variance projectionKind) {
         push(signatureVisitor().visitArrayType());
-        jetSignatureWriter.visitArrayType(nullable);
+        jetSignatureWriter.visitArrayType(nullable, toJetSignatureVariance(projectionKind));
         if (jvmCurrentType == null) {
             ++jvmCurrentTypeArrayLevel;
         }

compiler/backend/src/org/jetbrains/jet/codegen/state/JetTypeMapper.java

@@ -266,10 +266,11 @@ public class JetTypeMapper extends BindingTraceAware {
             if (jetType.getArguments().size() != 1) {
                 throw new UnsupportedOperationException("arrays must have one type argument");
             }
-            JetType memberType = jetType.getArguments().get(0).getType();
+            TypeProjection memberProjection = jetType.getArguments().get(0);
+            JetType memberType = memberProjection.getType();
 
             if (signatureVisitor != null) {
-                signatureVisitor.writeArrayType(jetType.isNullable());
+                signatureVisitor.writeArrayType(jetType.isNullable(), memberProjection.getProjectionKind());
                 mapType(memberType, signatureVisitor, JetTypeMapperMode.TYPE_PARAMETER);
                 signatureVisitor.writeArrayEnd();
             }