https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92446
--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> --- Author: jason Date: Fri Dec 13 05:10:02 2019 New Revision: 279333 URL: https://gcc.gnu.org/viewcvs?rev=279333&root=gcc&view=rev Log: PR c++/92446 - deduction of class NTTP. Another place we need to look through the VIEW_CONVERT_EXPR we add to make a use of a class NTTP have const type. * pt.c (deducible_expression): Look through VIEW_CONVERT_EXPR. Added: branches/gcc-9-branch/gcc/testsuite/g++.dg/cpp2a/nontype-class26.C Modified: branches/gcc-9-branch/gcc/cp/ChangeLog branches/gcc-9-branch/gcc/cp/pt.c
