Comment #8 on issue 2254 by [email protected]: Negated regexp character
class take unusually long to evaluate.
http://code.google.com/p/v8/issues/detail?id=2254
http://code.google.com/p/v8/issues/detail?id=2912
It is an actual problem. We have a server app that uses a lot of regexes.
We faced that issue twice already: dead hang of a server process, a regex
going exponential on *some* inputs.
Regarding those two questions:
a) time limit is better given at compile time; we can always set it to e.g.
3 sec for a server process;
b) clearly, throw an exception.
The actual issue is being able to locate/fix that regex fast; graceful
degradation is less important here, IMHO.
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