https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88690
--- Comment #11 from Jason Merrill <jason at gcc dot gnu.org> --- Author: jason Date: Thu Feb 21 18:16:15 2019 New Revision: 269073 URL: https://gcc.gnu.org/viewcvs?rev=269073&root=gcc&view=rev Log: PR c++/88690 - C++17 ICE with empty base in aggregate. Base fields for empty bases appear in initialization order, which may not be the same as layout order. If they also show up in a CONSTRUCTOR in that order, output_constructor_regular_field aborts because it understandably doesn't want to go backwards. I also considered making o_c_r_f more tolerant of the case where the out-of-order field has fieldsize 0, and so no actual data needs to be emitted, but we might as well avoid adding an element to the CONSTRUCTOR in the first place. * typeck2.c (process_init_constructor_record): Skip trivial initialization of an empty base. Added: trunk/gcc/testsuite/g++.dg/cpp1z/aggr-base7.C Modified: trunk/gcc/cp/ChangeLog trunk/gcc/cp/typeck2.c
