https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94510
--- Comment #13 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-9 branch has been updated by Jason Merrill <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:35699e75a502bb25a2cb23a456e8d6f036b8f226 commit r9-8526-g35699e75a502bb25a2cb23a456e8d6f036b8f226 Author: Martin Sebor <mse...@gmail.com> Date: Tue Apr 21 11:02:06 2020 -0400 c++: reject scalar array initialization with nullptr [PR94510] The change committed to GCC 9 to allow string literals as template arguments caused the compiler to prune away, and thus miss diagnosing, conversion from nullptr to int in an array initializer. After looking at various approaches to improving the pruning, we realized that the only place the pruning is necessary is in the mangler. gcc/cp/ChangeLog 2020-04-21 Martin Sebor <mse...@redhat.com> Jason Merrill <ja...@redhat.com> PR c++/94510 * decl.c (reshape_init_array_1): Avoid stripping redundant trailing zero initializers... * mangle.c (write_expression): ...and handle them here even for pointers to members by calling zero_init_expr_p. * cp-tree.h (zero_init_expr_p): Declare. * tree.c (zero_init_expr_p): Define. (type_initializer_zero_p): Remove. * pt.c (tparm_obj_values): New hash_map. (get_template_parm_object): Store to it. (tparm_object_argument): New. gcc/testsuite/ChangeLog 2020-04-21 Martin Sebor <mse...@redhat.com> PR c++/94510 * g++.dg/init/array58.C: New test. * g++.dg/init/array59.C: New test. * g++.dg/cpp2a/nontype-class34.C: New test. * g++.dg/cpp2a/nontype-class35.C: New test.
