https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67525
--- Comment #1 from Gerhard Steinmetz <gerhard.steinmetz.fort...@t-online.de> --- Whereas : $ cat y1.f90 subroutine f(x) select type (x) end select end $ gfortran -c y1.f90 y1.f90:2:18: select type (x) 1 Error: Selector shall be polymorphic in SELECT TYPE statement at (1)