I suspect that [[:alphanum:]][-[:alphanum:]]* is what is killing you... I'm not even sure what you are trying to match... BTW: do you need to use capturing (ie parenthesis)? capturing can use lots of memory as well... Mathew ----- Original Message ----- From: "Preston A. Elder" <prez@neuromancy.net> To: <boost@lists.boost.org> Sent: Thursday, February 03, 2005 2:13 PM Subject: [boost] Simple regex problem
Hum,
Consider the following application (running on Linux with GCC):
=== BEGIN CODE #include <boost/regex.hpp> #include <iostream> #include <exception> #include <typeinfo>
int main() { try { std::string rx_string = "^([[:alpha:]][-[:alnum:]]*[[:space:]]*)+$"; boost::regex rx(rx_string, boost::regex_constants::char_classes | boost::regex_constants::intervals); std::string test = "GlobalMSG HelpServ DevNull";
if (boost::regex_match(test, rx)) std::cout << "Matched." << std::endl; else std::cout << "Not Matched." << std::endl; } catch (const std::exception &e) { std::cout << "Exception " << typeid(e).name() << ": " << e.what() << std::endl; }
return 0; } === END CODE
The result of running this is: Exception N5boost14bad_expressionE: Memory exhausted
My question is, why? The regex is simple enough, and the source string is quite short. Please note, the same regex with the test string of: "OperServ Magick-1"
runs and completes successfully without a problem.
Any ideas on how to fix this?
-- PreZ :) Founder. The Neuromancy Society (http://www.neuromancy.net)
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