https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97943
--- Comment #8 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jakub Jelinek <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:a7285c8659689e9ade53fcb996b26d874455a4f3 commit r11-5329-ga7285c8659689e9ade53fcb996b26d874455a4f3 Author: Jakub Jelinek <ja...@redhat.com> Date: Wed Nov 25 10:37:58 2020 +0100 middle-end: Reject flexible array members in __builtin_clear_padding [PR97943] As mentioned in the PR, we currently ICE on flexible array members in structs and unions during __builtin_clear_padding processing. Jason said in the PR he'd prefer an error in these cases over forcefully handling it as [0] arrays (everything is padding then) or consider the arrays to have as many whole elements as would fit into the tail padding. So, this patch implements that. 2020-11-25 Jakub Jelinek <ja...@redhat.com> PR middle-end/97943 * gimple-fold.c (clear_padding_union, clear_padding_type): Error on and ignore flexible array member fields. Ignore fields with error_mark_node type. * c-c++-common/builtin-clear-padding-2.c: New test. * c-c++-common/builtin-clear-padding-3.c: New test. * g++.dg/ext/builtin-clear-padding-1.C: New test. * gcc.dg/builtin-clear-padding-2.c: New test.
