Companion

Where metafactory and altMetafactory both put instantiatedMethodType — the one bootstrap argument describing the impl handle rather than the interface. See visitInvokeDynamicInsn.

The JVM's two initializer methods: never dispatched through the bridge.

Cache for inaccessible — keyed by internal name, one class-file read per class.

Whether a call site can be rewritten to an AccessBridge indy at all: a widenable owner, and neither of the two shapes a bridge cannot carry — the JVM's initializers, and INVOKESPECIAL super-calls.

Erase one type descriptor to Object when a snippet cannot name its class. An array erases its ELEMENT type and keeps its dimensions: the real array is assignable to [Ljava/lang/Object; by covariance and it is still an array, so arraylength/aaload keep verifying — collapsing to a bare Object would not. Primitives and accessible types pass through untouched, so the common path keeps its precise types — and with them the JIT's ability to inline the call site.

A field handle's desc is a FIELD descriptor, which eraseMethodDesc would read off the end of. Unreachable today.

erase applied to every parameter and to the return type of METHOD descriptor.

True if internalName is NOT a public class — meaning a snippet cannot even NAME it, let alone touch its members: a snippet always sits in a different runtime package (different loader AND different package name), so package-private is out of reach by definition.