https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67096
--- Comment #1 from John Marino <gnugcc at marino dot st> --- Created attachment 36108 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36108&action=edit modification to test that makes it legal As an illustration, I've modified the test to stop before 0x200000 which results in success for transforms that are strict.