[J3] END statement

[Steve Lionel]

I think we've digressed some from Jon's original question. I had spent 
some time looking at this when he first wrote, but didn't find anything 
conclusive. I've taken another look and think I now have.

F2018 6.3.1 says:

"A Fortran program unit is a sequence of one or more lines, organized as 
Fortran statements, comments, and INCLUDE lines. A line is a sequence of 
zero or more characters. Lines following a program unit END statement 
are not part of that program unit. A Fortran statement is a sequence of 
one or more complete or partial lines."

This says to me that a line can't span more than one program unit.

I note that NAG Fortran, for Jon's example, says:

NAG Fortran Compiler Release 7.1(Hanzomon) Build 7114
Error: t.f90, line 1: Program unit END stmt must be the last stmt on a line
        detected at SUBROUTINE@<end-of-statement>

This is consistent with my reading of 6.3.1.

Steve
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