https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94383
--- Comment #17 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:9407f0c32b215d55d3474a234b0043bddc185b1c commit r10-7948-g9407f0c32b215d55d3474a234b0043bddc185b1c Author: Jakub Jelinek <ja...@redhat.com> Date: Fri Apr 24 19:14:27 2020 +0200 testsuite: C++14 vs. C++17 struct-layout-1.exp testing with ALT_CXX_UNDER_TEST [PR94383] > I haven't added (yet) checks if the alternate compiler does support these > options (I think that can be done incrementally), so for now this testing is > done only if the alternate compiler is not used. This patch does that, so now when testing against not too old compiler it can do the -std=c++14 vs. -std=c++17 testing also between under test and alt compilers. 2020-04-24 Jakub Jelinek <ja...@redhat.com> PR c++/94383 * g++.dg/compat/struct-layout-1.exp: Use the -std=c++14 vs. -std=c++17 ABI compatibility testing even with ALT_CXX_UNDER_TEST, as long as that compiler accepts -std=c++14 and -std=c++17 options.