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From: "haoxintu at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/95564] New: GCC rejects lambda expression with
 "noexcept(1+1)"
Date: Sat, 06 Jun 2020 16:18:58 +0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: c++
X-Bugzilla-Version: 11.0
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D95564

            Bug ID: 95564
           Summary: GCC rejects lambda expression with "noexcept(1+1)"
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: haoxintu at gmail dot com
  Target Milestone: ---

This code test.cc

int main(){
    auto a =3D [ & ] (...) noexcept(1+1) {};
    return 0;
}

$g++-trunk test.cc
test.cc:2:38: error: narrowing conversion of '2' from 'int' to 'bool'
[-Wnarrowing]
    2 |     auto a =3D [ & ] (...) noexcept(1+1) {};
      |=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20

GCC fails to compile it, while clang, icc, or msvc accept it.=