thanks for the example.
the regex implementation provider was changed between versions 0.843 and 0.850 from boost <http://www.boost.org/doc/libs/1_57_0/libs/regex/doc/html/index.html> to libstdc++ <https://gcc.gnu.org/wiki/Regex>. hopefully tweaks can be found; otherwise we can always revert to the boost implementation.
2 sides to this topic: - validity. the first step would be to make sure the example expression is actually valid (starting with a "?" sign seems strange to me); and if it is, why libstdc++ rejects it. - performance.
thanks for the example.
the regex implementation provider was changed between versions 0.843 and 0.850 from boost <http:// www.boost. org/doc/ libs/1_ 57_0/libs/ regex/doc/ html/index. html> to libstdc++ <https:/ /gcc.gnu. org/wiki/ Regex>. hopefully tweaks can be found; otherwise we can always revert to the boost implementation.
2 sides to this topic:
- validity. the first step would be to make sure the example expression is actually valid (starting with a "?" sign seems strange to me); and if it is, why libstdc++ rejects it.
- performance.