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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/107146] [ICE] in build_value_init, at cp/init.cc:347
Date: Tue, 04 Oct 2022 05:26:36 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107146

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This seems like it was fixed already in GCC 12.2.0.
testcase.ii: In instantiation of 'void fields_count() [with T =3D my_class]=
':
testcase.ii:18:3:   required from 'void binary_visit(T, U) [with
<template-parameter-1-1> =3D less_impl; T =3D my_class*; U =3D my_class]'
testcase.ii:21:26:   required from 'void lt_fields(T, U) [with T =3D my_cla=
ss*; U
=3D my_class]'
testcase.ii:30:43:   required from here
testcase.ii:6:37: error: no matching function for call to
'detect_fields_count_dispatch<type>(<brace-enclosed initializer list>, int,
int)'
testcase.ii:3:6: note: candidate: 'template<class T, long int N> decltype (=
T{})
detect_fields_count_dispatch(size_t_<N>, long int, int)'
testcase.ii:3:6: note:   template argument deduction/substitution failed:
testcase.ii:6:37: note:   couldn't deduce template parameter 'N'

Most likely fixed by the patch for PR 105589 .=