On Mon, Feb 22, 2021 at 1:17 AM Michael J. Baars <mjbaars1977....@cyberfiber.eu> wrote: > > Hi, > > I just wrote this little program to demonstrate a possible flaw in both > malloc and calloc. > > If I allocate a the simplest memory region from main(), one out of three > optimization flags fail. > If I allocate the same region from a function, three out of three > optimization flags fail. > > Does someone know if this really is a flaw, and if so, is it a gcc or a > kernel flaw?
There is no flaw. GCC (kernel, glibc) all assume unaligned accesses on x86 will not cause an exception. Thanks, Andrew > > Regards, > Mischa.
