8030079: Lint warnings in java.lang.invoke

8031373: Lint warnings in java.util.stream
Reviewed-by: psandoz, forax

src/share/classes/java/lang/invoke/BoundMethodHandle.java

@@ -612,7 +612,7 @@ import jdk.internal.org.objectweb.asm.Type;
             mv.visitVarInsn(ALOAD, 1);
             mv.visitVarInsn(ALOAD, 2);
 
-            mv.visitMethodInsn(INVOKESPECIAL, BMH, "<init>", makeSignature("", true));
+            mv.visitMethodInsn(INVOKESPECIAL, BMH, "<init>", makeSignature("", true), false);
 
             for (int i = 0, j = 0; i < types.length(); ++i, ++j) {
                 // i counts the arguments, j counts corresponding argument slots
@@ -663,7 +663,7 @@ import jdk.internal.org.objectweb.asm.Type;
             // put fields on the stack
             emitPushFields(types, className, mv);
             // finally, invoke the constructor and return
-            mv.visitMethodInsn(INVOKEVIRTUAL, MH, "invokeBasic", makeSignature(types, false));
+            mv.visitMethodInsn(INVOKEVIRTUAL, MH, "invokeBasic", makeSignature(types, false), false);
             mv.visitInsn(ARETURN);
             mv.visitMaxs(0, 0);
             mv.visitEnd();
@@ -679,7 +679,7 @@ import jdk.internal.org.objectweb.asm.Type;
                 int iconstInsn = ICONST_0 + extensionIndex(t);
                 assert(iconstInsn <= ICONST_5);
                 mv.visitInsn(iconstInsn);
-                mv.visitMethodInsn(INVOKEVIRTUAL, SPECIES_DATA, "extendWithIndex", BMHSPECIES_DATA_EWI_SIG);
+                mv.visitMethodInsn(INVOKEVIRTUAL, SPECIES_DATA, "extendWithIndex", BMHSPECIES_DATA_EWI_SIG, false);
                 mv.visitFieldInsn(GETFIELD, SPECIES_DATA, "constructor", "[" + MH_SIG);
                 mv.visitInsn(ICONST_0);
                 mv.visitInsn(AALOAD);
@@ -691,7 +691,7 @@ import jdk.internal.org.objectweb.asm.Type;
                 // put narg on stack
                 mv.visitVarInsn(typeLoadOp(t), 3);
                 // finally, invoke the constructor and return
-                mv.visitMethodInsn(INVOKEVIRTUAL, MH, "invokeBasic", makeSignature(types + t, false));
+                mv.visitMethodInsn(INVOKEVIRTUAL, MH, "invokeBasic", makeSignature(types + t, false), false);
                 mv.visitInsn(ARETURN);
                 mv.visitMaxs(0, 0);
                 mv.visitEnd();
@@ -702,7 +702,7 @@ import jdk.internal.org.objectweb.asm.Type;
             mv.visitCode();
             mv.visitLdcInsn(types);
             mv.visitLdcInsn(Type.getObjectType(className));
-            mv.visitMethodInsn(INVOKESTATIC, SPECIES_DATA, "getForClass", BMHSPECIES_DATA_GFC_SIG);
+            mv.visitMethodInsn(INVOKESTATIC, SPECIES_DATA, "getForClass", BMHSPECIES_DATA_GFC_SIG, false);
             mv.visitFieldInsn(PUTSTATIC, className, "SPECIES_DATA", SPECIES_DATA_SIG);
             mv.visitInsn(RETURN);
             mv.visitMaxs(0, 0);

src/share/classes/java/lang/invoke/InnerClassLambdaMetafactory.java

@@ -193,10 +193,10 @@ import static jdk.internal.org.objectweb.asm.Opcodes.*;
     CallSite buildCallSite() throws LambdaConversionException {
         final Class<?> innerClass = spinInnerClass();
         if (invokedType.parameterCount() == 0) {
-            final Constructor[] ctrs = AccessController.doPrivileged(
-                    new PrivilegedAction<Constructor[]>() {
+            final Constructor<?>[] ctrs = AccessController.doPrivileged(
+                    new PrivilegedAction<Constructor<?>[]>() {
                 @Override
-                public Constructor[] run() {
+                public Constructor<?>[] run() {
                     Constructor<?>[] ctrs = innerClass.getDeclaredConstructors();
                     if (ctrs.length == 1) {
                         // The lambda implementing inner class constructor is private, set
@@ -338,7 +338,7 @@ import static jdk.internal.org.objectweb.asm.Opcodes.*;
             m.visitVarInsn(getLoadOpcode(argType), varIndex);
             varIndex += getParameterSize(argType);
         }
-        m.visitMethodInsn(INVOKESPECIAL, lambdaClassName, NAME_CTOR, constructorType.toMethodDescriptorString());
+        m.visitMethodInsn(INVOKESPECIAL, lambdaClassName, NAME_CTOR, constructorType.toMethodDescriptorString(), false);
         m.visitInsn(ARETURN);
         m.visitMaxs(-1, -1);
         m.visitEnd();
@@ -354,7 +354,7 @@ import static jdk.internal.org.objectweb.asm.Opcodes.*;
         ctor.visitCode();
         ctor.visitVarInsn(ALOAD, 0);
         ctor.visitMethodInsn(INVOKESPECIAL, JAVA_LANG_OBJECT, NAME_CTOR,
-                             METHOD_DESCRIPTOR_VOID);
+                             METHOD_DESCRIPTOR_VOID, false);
         int parameterCount = invokedType.parameterCount();
         for (int i = 0, lvIndex = 0; i < parameterCount; i++) {
             ctor.visitVarInsn(ALOAD, 0);
@@ -402,7 +402,7 @@ import static jdk.internal.org.objectweb.asm.Opcodes.*;
             mv.visitInsn(AASTORE);
         }
         mv.visitMethodInsn(INVOKESPECIAL, NAME_SERIALIZED_LAMBDA, NAME_CTOR,
-                DESCR_CTOR_SERIALIZED_LAMBDA);
+                DESCR_CTOR_SERIALIZED_LAMBDA, false);
         mv.visitInsn(ARETURN);
         // Maxs computed by ClassWriter.COMPUTE_MAXS, these arguments ignored
         mv.visitMaxs(-1, -1);
@@ -421,7 +421,7 @@ import static jdk.internal.org.objectweb.asm.Opcodes.*;
         mv.visitInsn(DUP);
         mv.visitLdcInsn("Non-serializable lambda");
         mv.visitMethodInsn(INVOKESPECIAL, NAME_NOT_SERIALIZABLE_EXCEPTION, NAME_CTOR,
-                           DESCR_CTOR_NOT_SERIALIZABLE_EXCEPTION);
+                           DESCR_CTOR_NOT_SERIALIZABLE_EXCEPTION, false);
         mv.visitInsn(ATHROW);
         mv.visitMaxs(-1, -1);
         mv.visitEnd();
@@ -434,7 +434,7 @@ import static jdk.internal.org.objectweb.asm.Opcodes.*;
         mv.visitInsn(DUP);
         mv.visitLdcInsn("Non-serializable lambda");
         mv.visitMethodInsn(INVOKESPECIAL, NAME_NOT_SERIALIZABLE_EXCEPTION, NAME_CTOR,
-                           DESCR_CTOR_NOT_SERIALIZABLE_EXCEPTION);
+                           DESCR_CTOR_NOT_SERIALIZABLE_EXCEPTION, false);
         mv.visitInsn(ATHROW);
         mv.visitMaxs(-1, -1);
         mv.visitEnd();

src/share/classes/java/lang/invoke/InvokerBytecodeGenerator.java

@@ -403,7 +403,7 @@ class InvokerBytecodeGenerator {
         String owner = "java/lang/" + wrapper.wrapperType().getSimpleName();
         String name  = "valueOf";
         String desc  = "(" + wrapper.basicTypeChar() + ")L" + owner + ";";
-        mv.visitMethodInsn(Opcodes.INVOKESTATIC, owner, name, desc);
+        mv.visitMethodInsn(Opcodes.INVOKESTATIC, owner, name, desc, false);
     }
 
     /**
@@ -417,7 +417,7 @@ class InvokerBytecodeGenerator {
         String name  = wrapper.primitiveSimpleName() + "Value";
         String desc  = "()" + wrapper.basicTypeChar();
         mv.visitTypeInsn(Opcodes.CHECKCAST, owner);
-        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, owner, name, desc);
+        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, owner, name, desc, false);
     }
 
     /**
@@ -437,7 +437,7 @@ class InvokerBytecodeGenerator {
                 mv.visitLdcInsn(constantPlaceholder(pclass));
                 mv.visitTypeInsn(Opcodes.CHECKCAST, CLS);
                 mv.visitInsn(Opcodes.SWAP);
-                mv.visitMethodInsn(Opcodes.INVOKESTATIC, MHI, "castReference", CLL_SIG);
+                mv.visitMethodInsn(Opcodes.INVOKESTATIC, MHI, "castReference", CLL_SIG, false);
                 if (pclass.isArray())
                     mv.visitTypeInsn(Opcodes.CHECKCAST, OBJARY);
             }
@@ -575,7 +575,7 @@ class InvokerBytecodeGenerator {
 
         // invocation
         MethodType type = name.function.methodType();
-        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, MH, "invokeBasic", type.basicType().toMethodDescriptorString());
+        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, MH, "invokeBasic", type.basicType().toMethodDescriptorString(), false);
     }
 
     static private Class<?>[] STATICALLY_INVOCABLE_PACKAGES = {
@@ -1082,7 +1082,7 @@ class InvokerBytecodeGenerator {
         emitAloadInsn(0);
         mv.visitFieldInsn(Opcodes.GETFIELD, MH, "form", "Ljava/lang/invoke/LambdaForm;");
         mv.visitInsn(Opcodes.SWAP);  // swap form and array; avoid local variable
-        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, LF, "interpretWithArguments", "([Ljava/lang/Object;)Ljava/lang/Object;");
+        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, LF, "interpretWithArguments", "([Ljava/lang/Object;)Ljava/lang/Object;", false);
 
         // maybe unbox
         Class<?> rtype = invokerType.returnType();
@@ -1145,7 +1145,7 @@ class InvokerBytecodeGenerator {
 
         // Invoke
         String targetDesc = dstType.basicType().toMethodDescriptorString();
-        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, MH, "invokeBasic", targetDesc);
+        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, MH, "invokeBasic", targetDesc, false);
 
         // Box primitive types
         Class<?> rtype = dstType.returnType();

src/share/classes/java/lang/invoke/TypeConvertingMethodAdapter.java

@@ -158,19 +158,19 @@ class TypeConvertingMethodAdapter extends MethodVisitor {
         visitMethodInsn(Opcodes.INVOKESTATIC,
                 wrapperName(w),
                 NAME_BOX_METHOD,
-                boxingDescriptor(w));
+                boxingDescriptor(w), false);
     }
 
     /**
      * Convert types by unboxing. The source type is known to be a primitive wrapper.
-     * @param ws A primitive wrapper corresponding to wrapped reference source type
+     * @param sname A primitive wrapper corresponding to wrapped reference source type
      * @param wt A primitive wrapper being converted to
      */
     void unbox(String sname, Wrapper wt) {
         visitMethodInsn(Opcodes.INVOKEVIRTUAL,
                 sname,
                 unboxMethod(wt),
-                unboxingDescriptor(wt));
+                unboxingDescriptor(wt), false);
     }
 
     private String descriptorToName(String desc) {

src/share/classes/java/util/stream/ForEachOps.java

@@ -32,6 +32,7 @@ import java.util.concurrent.ForkJoinTask;
 import java.util.function.Consumer;
 import java.util.function.DoubleConsumer;
 import java.util.function.IntConsumer;
+import java.util.function.IntFunction;
 import java.util.function.LongConsumer;
 
 /**
@@ -471,9 +472,11 @@ final class ForEachOps {
             if (task.getPendingCount() > 0) {
                 // Cannot complete just yet so buffer elements into a Node
                 // for use when completion occurs
+                @SuppressWarnings("unchecked")
+                IntFunction<T[]> generator = size -> (T[]) new Object[size];
                 Node.Builder<T> nb = task.helper.makeNodeBuilder(
                         task.helper.exactOutputSizeIfKnown(rightSplit),
-                        size -> (T[]) new Object[size]);
+                        generator);
                 task.node = task.helper.wrapAndCopyInto(nb, rightSplit).build();
                 task.spliterator = null;
             }

src/share/classes/java/util/stream/Nodes.java

@@ -63,7 +63,7 @@ final class Nodes {
     // IllegalArgumentException messages
     static final String BAD_SIZE = "Stream size exceeds max array size";
 
-    @SuppressWarnings("raw")
+    @SuppressWarnings("rawtypes")
     private static final Node EMPTY_NODE = new EmptyNode.OfRef();
     private static final Node.OfInt EMPTY_INT_NODE = new EmptyNode.OfInt();
     private static final Node.OfLong EMPTY_LONG_NODE = new EmptyNode.OfLong();
@@ -956,6 +956,7 @@ final class Nodes {
          * Initiate a stack containing, in left-to-right order, the child nodes
          * covered by this spliterator
          */
+        @SuppressWarnings("unchecked")
         protected final Deque<N> initStack() {
             // Bias size to the case where leaf nodes are close to this node
             // 8 is the minimum initial capacity for the ArrayDeque implementation
@@ -969,6 +970,7 @@ final class Nodes {
          * Depth first search, in left-to-right order, of the node tree, using
          * an explicit stack, to find the next non-empty leaf node.
          */
+        @SuppressWarnings("unchecked")
         protected final N findNextLeafNode(Deque<N> stack) {
             N n = null;
             while ((n = stack.pollFirst()) != null) {
@@ -984,6 +986,7 @@ final class Nodes {
             return null;
         }
 
+        @SuppressWarnings("unchecked")
         protected final boolean initTryAdvance() {
             if (curNode == null)
                 return false;
@@ -1870,6 +1873,7 @@ final class Nodes {
             }
 
             assert task.offset + task.length < MAX_ARRAY_SIZE;
+            @SuppressWarnings("unchecked")
             T_SINK sink = (T_SINK) task;
             task.helper.wrapAndCopyInto(sink, rightSplit);
             task.propagateCompletion();
@@ -2173,6 +2177,7 @@ final class Nodes {
         }
 
         @Override
+        @SuppressWarnings("unchecked")
         protected T_NODE doLeaf() {
             T_BUILDER builder = builderFactory.apply(helper.exactOutputSizeIfKnown(spliterator));
             return (T_NODE) helper.wrapAndCopyInto(builder, spliterator).build();

src/share/classes/java/util/stream/SortedOps.java

@@ -29,7 +29,6 @@ import java.util.Arrays;
 import java.util.Comparator;
 import java.util.Objects;
 import java.util.Spliterator;
-import java.util.concurrent.ForkJoinTask;
 import java.util.function.IntFunction;
 
 
@@ -113,7 +112,9 @@ final class SortedOps {
                   StreamOpFlag.IS_ORDERED | StreamOpFlag.IS_SORTED);
             this.isNaturalSort = true;
             // Will throw CCE when we try to sort if T is not Comparable
-            this.comparator = (Comparator<? super T>) Comparator.naturalOrder();
+            @SuppressWarnings("unchecked")
+            Comparator<? super T> comp = (Comparator<? super T>) Comparator.naturalOrder();
+            this.comparator = comp;
         }
 
         /**
@@ -170,7 +171,7 @@ final class SortedOps {
         }
 
         @Override
-        public Sink<Integer> opWrapSink(int flags, Sink sink) {
+        public Sink<Integer> opWrapSink(int flags, Sink<Integer> sink) {
             Objects.requireNonNull(sink);
 
             if (StreamOpFlag.SORTED.isKnown(flags))
@@ -335,6 +336,7 @@ final class SortedOps {
         }
 
         @Override
+        @SuppressWarnings("unchecked")
         public void begin(long size) {
             if (size >= Nodes.MAX_ARRAY_SIZE)
                 throw new IllegalArgumentException(Nodes.BAD_SIZE);

src/share/classes/java/util/stream/SpinedBuffer.java

@@ -92,6 +92,7 @@ class SpinedBuffer<E>
      * @throws IllegalArgumentException if the specified initial capacity
      *         is negative
      */
+    @SuppressWarnings("unchecked")
     SpinedBuffer(int initialCapacity) {
         super(initialCapacity);
         curChunk = (E[]) new Object[1 << initialChunkPower];
@@ -100,6 +101,7 @@ class SpinedBuffer<E>
     /**
      * Constructs an empty list with an initial capacity of sixteen.
      */
+    @SuppressWarnings("unchecked")
     SpinedBuffer() {
         super();
         curChunk = (E[]) new Object[1 << initialChunkPower];
@@ -114,6 +116,7 @@ class SpinedBuffer<E>
                : priorElementCount[spineIndex] + spine[spineIndex].length;
     }
 
+    @SuppressWarnings("unchecked")
     private void inflateSpine() {
         if (spine == null) {
             spine = (E[][]) new Object[MIN_SPINE_SIZE][];
@@ -125,6 +128,7 @@ class SpinedBuffer<E>
     /**
      * Ensure that the buffer has at least capacity to hold the target size
      */
+    @SuppressWarnings("unchecked")
     protected final void ensureCapacity(long targetSize) {
         long capacity = capacity();
         if (targetSize > capacity) {

src/share/classes/java/util/stream/StreamSpliterators.java

@@ -516,6 +516,7 @@ class StreamSpliterators {
         }
 
         @Override
+        @SuppressWarnings("unchecked")
         public T_SPLITR trySplit() {
             return (T_SPLITR) get().trySplit();
         }
@@ -643,6 +644,7 @@ class StreamSpliterators {
             // existing and additionally created F/J tasks that perform
             // redundant work on no elements.
             while (true) {
+                @SuppressWarnings("unchecked")
                 T_SPLITR leftSplit = (T_SPLITR) s.trySplit();
                 if (leftSplit == null)
                     return null;
@@ -970,6 +972,7 @@ class StreamSpliterators {
             // Stop splitting when there are no more limit permits
             if (permits.get() == 0)
                 return null;
+            @SuppressWarnings("unchecked")
             T_SPLITR split = (T_SPLITR) s.trySplit();
             return split == null ? null : makeSpliterator(split);
         }
@@ -1068,16 +1071,18 @@ class StreamSpliterators {
                 super(s, skip, limit);
             }
 
-            OfPrimitive(T_SPLITR s, UnorderedSliceSpliterator.OfPrimitive parent) {
+            OfPrimitive(T_SPLITR s, UnorderedSliceSpliterator.OfPrimitive<T, T_CONS, T_BUFF, T_SPLITR> parent) {
                 super(s, parent);
             }
 
             @Override
             public boolean tryAdvance(T_CONS action) {
                 Objects.requireNonNull(action);
+                @SuppressWarnings("unchecked")
+                T_CONS consumer = (T_CONS) this;
 
                 while (permitStatus() != PermitStatus.NO_MORE) {
-                    if (!s.tryAdvance((T_CONS) this))
+                    if (!s.tryAdvance(consumer))
                         return false;
                     else if (acquirePermits(1) == 1) {
                         acceptConsumed(action);
@@ -1316,7 +1321,7 @@ class StreamSpliterators {
      * estimate size is 0.
      *
      * <p>The {@code forEachRemaining} method if invoked will never terminate.
-     * The {@coe tryAdvance} method always returns true.
+     * The {@code tryAdvance} method always returns true.
      *
      */
     static abstract class InfiniteSupplyingSpliterator<T> implements Spliterator<T> {

src/share/classes/java/util/stream/Streams.java

@@ -715,6 +715,7 @@ final class Streams {
 
         @Override
         public T_SPLITR trySplit() {
+            @SuppressWarnings("unchecked")
             T_SPLITR ret = beforeSplit ? aSpliterator : (T_SPLITR) bSpliterator.trySplit();
             beforeSplit = false;
             return ret;