'use strict'; const common = require('../common'); const stream = require('stream'); process.on('uncaughtException', common.mustCall()); const r = new stream.Readable(); r._read = function(size) { r.push(Buffer.allocUnsafe(size)); }; const w = new stream.Writable(); w._write = function(data, encoding, cb) { cb(null); }; r.pipe(w); // end() after pipe should cause unhandled exception w.end();