https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100975
--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Marek Polacek <mpola...@gcc.gnu.org>: https://gcc.gnu.org/g:e66d0b7b87d105d24da8c4784a0b907fb6b2c095 commit r12-1933-ge66d0b7b87d105d24da8c4784a0b907fb6b2c095 Author: Marek Polacek <pola...@redhat.com> Date: Tue Jun 29 14:30:51 2021 -0400 c++: DR2397 - auto specifier for * and & to arrays [PR100975] This patch implements DR2397, which removes the restriction in [dcl.array]p4 that the array element type may not be a placeholder type. We don't need to worry about decltype(auto) here, so this allows code like int a[3]; auto (*p)[3] = &a; auto (&r)[3] = a; However, note that auto (&&r)[2] = { 1, 2 }; auto arr[2] = { 1, 2 }; still doesn't work (although one day it might) and neither does int arr[5]; auto x[5] = arr; given that auto deduction is performed in terms of function template argument deduction, so the array decays to *. PR c++/100975 DR 2397 gcc/cp/ChangeLog: * decl.c (create_array_type_for_decl): Allow array of auto. gcc/testsuite/ChangeLog: * g++.dg/cpp0x/auto24.C: Remove dg-error. * g++.dg/cpp0x/auto3.C: Adjust dg-error. * g++.dg/cpp0x/auto42.C: Likewise. * g++.dg/cpp0x/initlist75.C: Likewise. * g++.dg/cpp0x/initlist80.C: Likewise. * g++.dg/diagnostic/auto1.C: Remove dg-error. * g++.dg/cpp23/auto-array.C: New test.
