fix bug

src/sys.cc

 
 namespace sys {
 
+static thread_local std::unordered_set<std::string> mkdirp_set;
+
 FileInfo fileInfo(const std::string &path) {
 	FileInfo finfo;
 
 }
 
 void mkdirp(const std::string &path) {
-	static thread_local std::unordered_set<std::string> set;
-	auto res = set.emplace(path);
+	auto res = mkdirp_set.emplace(path);
 	if (!res.second)
 		return;
 
 }
 
 void rmrf(const std::string &path) {
+	mkdirp_set.erase(path);
 	// TODO: Implement this in C++ instead
 	std::vector<std::string> argv;
 	argv.push_back("rm");