This change worries me. This can cause a space explosion during GC for pathological cases. It also adds a new case where strings can change shape, which has historically been a source of nasty bugs (the cons string short-circuiting). Do we have benchmark figures that support the change?
http://codereview.chromium.org/7736020/ -- v8-dev mailing list [email protected] http://groups.google.com/group/v8-dev
