possible gfortran bug

[George Rinker]

When I run gfortran (13.1.0 installed 2023/08/20.17:50) from cmd.exe on 
a source.f that generates a compiler error, I get a message listing the 
first error line and column in normal text, then subsequent messages in 
a different color, and then it hangs and doesn't respond to any keyboard 
input. The only way I've found to recover is to kill the cmd.exe shell 
and open a new one. Apparently stdin is getting redirected somehow to a 
nonexistent unit. Any insight?

- George Rinker