On Sun, Jul 17, 2022 at 01:29:07PM -0700, Linus Torvalds wrote:
On Sun, Jul 17, 2022 at 1:25 PM Sudip Mukherjee
[off-list ref] wrote:
quoted
And the generated assembly still has the memset for "struct prom_args".
Strange. That smells like a compiler bug to me.
But I can't read powerpc assembly code - it's been too many years, and
even back when I did read it I hated how the register "names" worked.
Maybe it was never the args array, and it was about the other fields.
Not that that makes any sense either, but it makes more sense than the
compiler turning a series of volatile accesses into a memset.
Calling mem* on a volatile object (or a struct containing one) is not
valid. I opened gcc.gnu.org/PR106335. Thanks for bringing this up!
Segher