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From: "ppalka at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/104594] narrowing of -1 to unsigned char not detected with
 requires concepts
Date: Wed, 06 Apr 2022 22:57:38 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104594

--- Comment #5 from Patrick Palka <ppalka at gcc dot gnu.org> ---
(In reply to Patrick Palka from comment #4)
> N.B. coerce_template_parms sometimes does encode the implicit conversion =
for
> a dependent NTTP argument, but only for sake of specialization matching (=
in
> light of 'auto' template parms IIUC), the IMPLICIT_CONV_EXPR built is a
> no-op otherwise.

This IMPLICIT_CONV_EXPRs I'm referring to are built by=20
maybe_convert_nontype_argument.=