testRegexp("(?!(?:\\3+(s+?)))", "gy", ["==","SSS","","","","","","11","=","11SSS"]) Reduced to /(?!(?:\1+s))/.test('SSS')
<rdar://problem/8882994>
Created attachment 79436 [details] Regression: Simple nested backtrack hangs The changeset (r76076) for https://bugs.webkit.org/show_bug.cgi?id=52540 broke simple backtracking in some cases. Reworked that change to link both jumps and labels.
Committed r76133: <http://trac.webkit.org/changeset/76133>