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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/102079] Misleading -Wlto-type-mismatch warning on wrong
 float type to C function
Date: Thu, 26 Aug 2021 14:17:15 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102079

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hubicka at gcc dot gnu.org,
                   |                            |rguenth at gcc dot gnu.org
           Keywords|                            |diagnostic, lto

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
I think LTO complains that the fortran frontend uses ssize_t but the C code
size_t for the hidden length argument.

I think the TBAA warning is bogus here since signed and unsigned long
inter-operate.  If the fortran frontend is suggesting size_t then it should
better
also use size_type_node for argument passing.

Honza, shouldn't we suppress the TBAA warning here?=