> Both Flang and LFortra are in development. GFortran is currently the most advanced open source compiler. Most of these tiny programs do at-least compile with

> Both Flang and LFortra are in development. GFortran is currently the most advanced open source compiler. Most of these tiny programs do at-least compile with ifc — https://benchmarksgame-team.pages.debian.net/benchmarksgame/measurements/gfortran.html https://benchmarksgame-team.pages.debian.net/benchmarksgame/... — fewer of them compile with gfortran — https://benchmarksgame-team.pages.debian.net/benchmarksgame/measurements/gfortran.html https://benchmarksgame-team.pages.debian.net/benchmarksgame/... — and fewer still compile with flang — https://benchmarksgame-team.pages.debian.net/benchmarksgame/measurements/flang.html https://benchmarksgame-team.pages.debian.net/benchmarksgame/... No doubt there's something ifc specific about the programs, or something obvious to a Fortran programmer but…