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From: "vivekrao4 at yahoo dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/102638] New: Add warning for implicit save
Date: Thu, 07 Oct 2021 13:14:35 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102638

            Bug ID: 102638
           Summary: Add warning for implicit save
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: vivekrao4 at yahoo dot com
  Target Milestone: ---

I request that a -Wimplicit-save option be added and made part of -Wall and
-Wextra. Within a procedure, a declaration such as

integer :: i =3D 0

would trigger the warning. To silence it, the user would have to write

integer, save :: i =3D 0

Implicit save is a bad feature of Fortran that often surprises and perplexes
newcomers to the language. Gfortran must implement the standard, but it can
nudge users toward better practices with a -Wimplicit-save option.=