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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/99355] -freal-X-real-Y -freal-Z-real-X promotes Z to Y
Date: Wed, 03 Mar 2021 08:31:56 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99355

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|unknown                     |10.2.0

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
So you say -freal-8-real-16 -freal-4-real-8 promotes real(4) to real(16).=20
Which indeed sounds less than useful but could be a valid reading of the
intended semantics.=