test: add regression test for v8.getHeapSnapshot() crash

Fixes: #35559

PR-URL: #35612
Reviewed-By: Michaël Zasso <[email protected]>
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: Richard Lau <[email protected]>
Reviewed-By: Jiawen Geng <[email protected]>
Reviewed-By: Rich Trott <[email protected]>
Reviewed-By: Gireesh Punathil <[email protected]>
Reviewed-By: Gerhard Stöbich <[email protected]>

Author: addaleax

test/parallel/test-v8-getheapsnapshot-twice.js

@@ -0,0 +1,9 @@
+'use strict';
+require('../common');
+const v8 = require('v8');
+
+// Regression test for https://github.com/nodejs/node/issues/35559
+// It is important that the return value of the first call is not used, i.e.
+// that the first snapshot is GC-able while the second one is being created.
+v8.getHeapSnapshot();
+v8.getHeapSnapshot();