package pkg import "regexp" func fn() { regexp.Match(".", nil) regexp.MatchString(".", "") regexp.MatchReader(".", nil) for { regexp.Match(".", nil) // want `calling regexp\.Match in a loop has poor performance` regexp.MatchString(".", "") // want `calling regexp\.MatchString in a loop has poor performance` regexp.MatchReader(".", nil) // want `calling regexp\.MatchReader in a loop has poor performance` } }