As part of my attempt to use the FastColoredTextBox control I stumble across one of those undocumented .Net bugs that has been laying around for some time without being fixed – The Regex class with RegexOptions.Compiled option compiled under x64 or (Any CPU) that executes extremely slowly. In fact, it performs so slowly that it appears the whole application is frozen for a few minutes while the memory usage slowly climbs to ridiculous levels.
There are only 2 solutions to this issue for now: (1) compile all assemblies with x86 option only (not great if you are running on 64-bit) or (2) do not use the RegexOptions.Compiled option. For me the latter is a better choice since there is hardly a different between compiled and not compiled regular expression processing times – that I can see and certainly better than waiting minutes for a frozen app to start reacting again.
Thanks Microsoft for this one. Great way to waste time trying to look for problems in you own app while it is their crap breaking stuff.
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