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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/98255] [10/11 Regression] wrong code at -Os
 and above with -fPIC on x86_64-pc-linux-gnu
Date: Thu, 21 Jan 2021 14:43:05 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98255

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ebotcazou at gcc dot gnu.o=
rg

--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Yeah, exactly that change I had in mind too.
The question is what it will mean to Ada.
In any case, from the get_inner_reference code I assume that either low_bou=
nd
is zero and then index can have any type which is then cast to sizetype bef=
ore
using further, or low_bound is variable or non-zero constant and in that ca=
se
the FE needs to ensure the indexes have type compatible with the type of the
low bound.=