https://issues.dlang.org/show_bug.cgi?id=17650
--- Comment #8 from Jon Degenhardt <jrdemail2000-dl...@yahoo.com> --- I'm preparing a PR to fix the underlying issue. A concern for the general release is that a single hyphen is often used to represent standard input in command line args. e.g. $ cat file.txt | my_d_program --file - > out.txt This will trigger the bounds check error if my_d_program is compiled in safe mode. --