https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77505
--- Comment #5 from Elizebeth Punnoose <elizebethp at gmail dot com> --- Hi Steve, To answer your first question, I am covered by the HPE corporate assignment. When posting the patch, I will be doing so from my corporate email id. The Fortran 2008 standards page at http://www.j3-fortran.org/doc/year/10/10-007.pdf, states the the following. 4.4.3.2 Character type specifier 5 If the character length parameter value evaluates to a negative value, the length of character entities declared is zero. I do agree with you that a negative character length does not indicate a violation of the standard, rather that it has to be considered as len=0, and hence does not warrant issuing a warning. The warning message can be hidden behind the -fcheck=bounds option.
