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CompilerWorkAround.cpp

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#include <regex>

namespace DFHack {

namespace neverCalled {

/**

* gcc/linstdc++ seems to generate code that links libstdc++ back to first

* shared object using std::regex. To allow plugins unload with std::regex in

* the code we need the std::regex functions inside libdfhack.so.

*

* If your plugin decides to use any overloads that aren't listed here it may

* stay in memory after dlclose.

*/

std::regex stdRegexPluginUnloadWorkaround()

{

std::regex fake("foo");

std::string haystack("bar is foo in the world");

std::regex fake2(std::string("bar"));

if (std::regex_match(haystack, fake))

std::swap(fake, fake2);

if (std::regex_search(haystack, fake))

std::swap(fake, fake2);

const char* haystack2 = "foo";

if (std::regex_match(haystack2, fake))

std::swap(fake, fake2);

if (std::regex_search(haystack2, fake))

std::swap(fake, fake2);

return fake;

}

}

}