https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69146
Alan Modra <amodra at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |amodra at gmail dot com --- Comment #5 from Alan Modra <amodra at gmail dot com> --- This is actually a dup of pr69644, and Jakub's patch for gcc-6 fixes this bug on gcc-5 and gcc-4.9. I didn't verify the claim that 4.9.3 works, but did check that the current 4.9 branch fails. In reply to comment #4, yes, mis-alignment will cause failures, but that isn't what is happening with the testcases here.