Code inspection: Char is possibly unintentionally used as integer

Some types have constructor overloads where a char argument is accepted as a number, even though an overload taking a string also exists. In those cases, a single character can easily be passed by mistake and interpreted as a numeric capacity or count.

This inspection reports constructor calls where a char argument is used for an integer-like parameter while another available overload would accept a string in the same position.

Example

                using System.Text;
                class Example
                {
                    void Test()
                    {
                        var builder = new StringBuilder('a');
                    }
                }
            

                using System.Text;
                class Example
                {
                    void Test()
                    {
                        var builder = new StringBuilder("a");
                    }
                }
            

01 April 2026