https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69435
--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to David Malcolm from comment #6) > Am still seeing "random" truncation, even with the DejaGnu patch in comment > #4. Which Linux kernel version? there has been some bugs in some newer kernels. I found so far only 4.10rc2 has the right fix.