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From: "tkoenig at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/94737] BIND(C) names are not always treated as case
 sensitive.
Date: Sat, 25 Apr 2020 16:25:52 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D94737

Thomas Koenig <tkoenig at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
            Summary|[8/9/10 Regression] BIND(C) |BIND(C) names are not
                   |names are not always        |always treated as case
                   |treated as case sensitive.  |sensitive.
         Resolution|---                         |INVALID

--- Comment #2 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Correction, this is not a regression.

F2018 has, in 19.2, paragraph 2

# The global identifier of an entity shall not be the same as the global
# identifier of any other entity. Furthermore, a binding label shall not
# be the same as the global identifier of any other global entity,
# ignoring differences in case.

So, the error message is correct, and you need to change your
program accordingly.=