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  1. #include <iostream>
  2. #include <regex>
  3. using namespace std;
  4.  
  5. int main() {
  6. 	bool caseInsensitive = true;
  7. 	char pattern[257] = "\\bword\\b";
  8. 	pattern[14] = '(';
  9. 	cout << "Pattern: " << pattern << endl;
  10. 	try
  11. 	{
  12. 		cout << "Flags: " << std::regex_constants::ECMAScript << endl;
  13. 		std::regex re(pattern, std::regex_constants::ECMAScript);
  14. 	}
  15. 	catch (std::regex_error &e)
  16. 	{
  17. 		cout << "Caught: " << e.what() << endl;
  18. 	}
  19. 	try
  20. 	{
  21. 		cout << "Flags: " << (std::regex_constants::ECMAScript | (caseInsensitive ? std::regex_constants::icase : 0)) << endl;
  22. 		std::regex re(pattern, std::regex_constants::ECMAScript | (caseInsensitive ? std::regex_constants::icase : 0));
  23. 	}
  24. 	catch (std::regex_error &e)
  25. 	{
  26. 		cout << "Caught: " << e.what() << endl;
  27. 	}
  28. 	return 0;
  29. }
Success #stdin #stdout 0s 3536KB
comments (?)
stdin 
Standard input is empty
stdout 
Pattern: \bword\b
Flags: 16
Flags: 17
Caught: regex_error
https://ideone.com/5DjYiz
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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