Messages in this thread |  | | From | Andrew Pinski <> | Date | Mon, 22 Feb 2021 01:29:23 -0800 | Subject | Re: problems with memory allocation and the alignment check |
| |
On Mon, Feb 22, 2021 at 1:17 AM Michael J. Baars <mjbaars1977.gcc@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.
|  |