[Bug middle-end/64247] malloc alignment and -mavx

[Joost.VandeVondele at mat dot ethz.ch]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64247

--- Comment #8 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
(In reply to Ondrej Bilka from comment #7)
> That looks like invalid bug. Fortran allows reassociate a+(b+c) into (a+b)+c
> which give different result. You will get same instability if you compile
> program with different versions of gcc.

sure (well actually you mean it can evaluate a+b+c in either way, if there are
parens the order is set). However, the issue here is that the same binary will
produce different results from run to run.. that seems not OK.