https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110344
--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The trunk branch has been updated by Jason Merrill <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:a1c6e9631ca33990a2b7411060ca4d18db081a7d commit r14-2146-ga1c6e9631ca33990a2b7411060ca4d18db081a7d Author: Jason Merrill <ja...@redhat.com> Date: Sat Jun 24 05:15:02 2023 -0400 c++: C++26 constexpr cast from void* [PR110344] P2768 allows static_cast from void* to ob* in constant evaluation if the pointer does in fact point to an object of the appropriate type. cxx_fold_indirect_ref already does the work of finding such an object if it happens to be a subobject rather than the outermost object at that address, as in constexpr-voidptr2.C. P2768 PR c++/110344 gcc/c-family/ChangeLog: * c-cppbuiltin.cc (c_cpp_builtins): Update __cpp_constexpr. gcc/cp/ChangeLog: * constexpr.cc (cxx_eval_constant_expression): In C++26, allow cast from void* to the type of a pointed-to object. gcc/testsuite/ChangeLog: * g++.dg/cpp26/constexpr-voidptr1.C: New test. * g++.dg/cpp26/constexpr-voidptr2.C: New test. * g++.dg/cpp26/feat-cxx26.C: New test.
