RFD: ArrayDeque bulk adds and lambda

[Eirik Bjørsnøs]

On Sat, Feb 21, 2026 at 11:08 AM Eirik Bjørsnøs <eirbjo at gmail.com> wrote:

Can this make ArrayDeque somewhat safer to use in early bootstrap code?
>

Adding some context from testing:

When modifying the mentioned code to not avoid the lambda bulk operation,
nothing crashes but the number of loaded classes during 'java -cp
hello.jar' is increased from 576 to 663. Here's a full list of extra
classes loaded:

88a89
> java.lang.NoSuchMethodException
148a150,170
> java.lang.classfile.Annotation
> java.lang.classfile.AnnotationElement
> java.lang.classfile.Attribute
> java.lang.classfile.AttributeMapper
> java.lang.classfile.AttributeMapper$AttributeStability
> java.lang.classfile.Attributes
> java.lang.classfile.BootstrapMethodEntry
> java.lang.classfile.ClassElement
> java.lang.classfile.ClassFileElement
> java.lang.classfile.FieldElement
> java.lang.classfile.MethodElement
> java.lang.classfile.TypeKind
> java.lang.classfile.attribute.RuntimeVisibleAnnotationsAttribute
> java.lang.classfile.constantpool.AnnotationConstantValueEntry
> java.lang.classfile.constantpool.ClassEntry
> java.lang.classfile.constantpool.ConstantPool
> java.lang.classfile.constantpool.ConstantPoolBuilder
> java.lang.classfile.constantpool.LoadableConstantEntry
> java.lang.classfile.constantpool.PoolEntry
> java.lang.classfile.constantpool.Utf8Entry
> java.lang.constant.ClassDesc
150a173,182
> java.lang.constant.ConstantDescs
> java.lang.constant.DirectMethodHandleDesc
> java.lang.constant.DirectMethodHandleDesc$Kind
> java.lang.constant.DynamicConstantDesc
> java.lang.constant.DynamicConstantDesc$AnonymousDynamicConstantDesc
> java.lang.constant.MethodHandleDesc
> java.lang.constant.MethodHandleDesc$1
> java.lang.constant.MethodTypeDesc
> java.lang.invoke.AbstractValidatingLambdaMetafactory
> java.lang.invoke.BootstrapMethodInvoker
153a186,193
> java.lang.invoke.DirectMethodHandle$Constructor
> java.lang.invoke.DirectMethodHandle$Holder
> java.lang.invoke.InfoFromMemberName
> java.lang.invoke.InnerClassLambdaMetafactory
> java.lang.invoke.InvokerBytecodeGenerator
> java.lang.invoke.InvokerBytecodeGenerator$8
> java.lang.invoke.Invokers
> java.lang.invoke.Invokers$Holder
154a195,201
> java.lang.invoke.LambdaForm$BasicType
> java.lang.invoke.LambdaForm$Holder
> java.lang.invoke.LambdaForm$Kind
> java.lang.invoke.LambdaForm$Name
> java.lang.invoke.LambdaForm$NamedFunction
> java.lang.invoke.LambdaMetafactory
> java.lang.invoke.LambdaProxyClassArchive
158a206,208
> java.lang.invoke.MethodHandleImpl$1
> java.lang.invoke.MethodHandleImpl$Intrinsic
> java.lang.invoke.MethodHandleInfo
163a214,215
> java.lang.invoke.MethodType$1
> java.lang.invoke.MethodTypeForm
169a222,223
> java.lang.invoke.VarHandle$AccessMode
> java.lang.invoke.VarHandle$AccessType
199a254
> java.lang.reflect.Array
270a326
> java.util.ArrayDeque$$Lambda/0x800000001
273d328
< java.util.ArrayList$Itr
359a415
> java.util.function.Consumer
393a450
> jdk.internal.access.JavaLangInvokeAccess
402a460,484
> jdk.internal.classfile.impl.AbstractAttributeMapper
>
jdk.internal.classfile.impl.AbstractAttributeMapper$RuntimeVisibleAnnotationsMapper
> jdk.internal.classfile.impl.AbstractElement
> jdk.internal.classfile.impl.AbstractPoolEntry
> jdk.internal.classfile.impl.AbstractPoolEntry$AbstractNamedEntry
> jdk.internal.classfile.impl.AbstractPoolEntry$AbstractRefEntry
> jdk.internal.classfile.impl.AbstractPoolEntry$ClassEntryImpl
> jdk.internal.classfile.impl.AbstractPoolEntry$Utf8EntryImpl
> jdk.internal.classfile.impl.AbstractPoolEntry$Utf8EntryImpl$State
> jdk.internal.classfile.impl.AnnotationImpl
> jdk.internal.classfile.impl.BootstrapMethodEntryImpl
> jdk.internal.classfile.impl.EntryMap
> jdk.internal.classfile.impl.SplitConstantPool
> jdk.internal.classfile.impl.TemporaryConstantPool
> jdk.internal.classfile.impl.UnboundAttribute
>
jdk.internal.classfile.impl.UnboundAttribute$UnboundRuntimeVisibleAnnotationsAttribute
> jdk.internal.classfile.impl.Util
> jdk.internal.classfile.impl.Util$Writable
> jdk.internal.constant.ArrayClassDescImpl
> jdk.internal.constant.ClassOrInterfaceDescImpl
> jdk.internal.constant.ConstantUtils
> jdk.internal.constant.DirectMethodHandleDescImpl
> jdk.internal.constant.DirectMethodHandleDescImpl$1
> jdk.internal.constant.MethodTypeDescImpl
> jdk.internal.constant.PrimitiveClassDescImpl
512a595
> jdk.internal.util.WeakReferenceKey
524a608
> sun.invoke.util.ValueConversions
525a610,612
> sun.invoke.util.VerifyType
> sun.invoke.util.Wrapper
> sun.invoke.util.Wrapper$Format

Eirik.
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