https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107237
anlauf at gcc dot gnu.org changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |INVALID CC| |anlauf at gcc dot gnu.org Status|UNCONFIRMED |RESOLVED --- Comment #1 from anlauf at gcc dot gnu.org --- It would help if you chose a font that can distinguish 'l' (ell) from '1' (one). Adding "implicit none" of -fimplicit-none tells you: 2 | DATA A(l), A(2), A(3), A(4) /0.0, 0.0, 0.0, 0.0/ | 1 Error: Symbol 'l' at (1) has no IMPLICIT type