`new EventEmitter() instanceof EventEmitter` segfaults (exit 139, no output)

[proggeramlug]

Found by the package audit (while fixing #10430/#10431) on Perry 7661bc0 (v0.5.1589), Linux x64. An instanceof
check of an EventEmitter instance against the EventEmitter constructor crashes the process with SIGSEGV before any
output is flushed (including earlier console.log lines).

Reproduction

main.ts:

import { EventEmitter } from "node:events";
import EE from "node:events";
const e = new EventEmitter();
console.log("named", e instanceof EventEmitter);
console.log("default", new EE() instanceof EE);
class Sub extends EventEmitter {}
console.log("sub", new Sub() instanceof EventEmitter, new Sub() instanceof Sub);

node main.ts
PERRY_NO_AUTO_OPTIMIZE=1 perry compile main.ts -o main && ./main; echo "rc=$?"

(Also reproduces with default auto-optimize, per the reporter.)

Expected (Node 26.5.1)

named true
default true
sub true true

Actual (Perry)

Segmentation fault (core dumped)
rc=139

Impact

x instanceof EventEmitter is how many libraries detect emitters/streams (ws, socket.io, mqtt, ioredis, pino,
bunyan, util.inherits-based code). Any such check crashes the process.

Notes

• Likely the same family as x instanceof C segfaults when x is a short (1–5 byte) inline string — crashes ajv 8 compile() and every fastify route with a schema #10479 (instanceof helper dereferencing a non-pointer value — here plausibly the
  native EventEmitter handle); not confirmed. Worth checking together with that fix.