> If I attempt to launch this emacs from a cygwin bash shell > (running inside MinTTY), I get: Stack overflow in equal > Adding -Q does not help, same error. If I instead try to > launch it from within Powershell v2, emacs works fine. > What is going on here? I never had this problem before.
I reported the same problem - that build is useless to me. See bug #6629, which has apparently been fixed.