Date: Sun, 3 Jan 2016 15:59:23 +0100 From: Bertram Scharpf <lists@bertram-scharpf.de> To: freebsd-hackers@freebsd.org Subject: Re: variables optimized out Message-ID: <20160103145923.GA16970@becker.bs.l> In-Reply-To: <CAA99N-OKyxzVaJ4ayXRUGAoovNtHFXTpOXPkwhdw9k3LEMnOtw@mail.gmail.com> References: <CAA99N-OKyxzVaJ4ayXRUGAoovNtHFXTpOXPkwhdw9k3LEMnOtw@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Hi,
On Sunday, 03. Jan 2016, 14:38:33 +0100, robbinson defau wrote:
> Im debugging some issues in the kernel and as the kernel is compiled by
> default with -O2, a lot of variables are optimized out. So i made changes
> to make.conf (CFLAGS and COPTFLAGS).\
>=20
> All builds fine, but I get the weirdest of panics that most certainly not
> happen with -O2. [...]
I just had a look at "man make.conf" and that says:
CFLAGS (str) Controls the compiler setting when compiling C code.
Optimization levels other than -O and -O2 are not sup=E2=80=90
ported.
At least to me this is a surprise. I'm really disappointed
about what programming style has become common.
Bertram
--=20
Bertram Scharpf
Stuttgart, Deutschland/Germany
http://www.bertram-scharpf.de
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20160103145923.GA16970>