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Re: README: gcc 7 switch coming to a port near you!
On Tue, Feb 12, 2019 at 2:25 AM matthew green <mrg%eterna.com.au@localhost> wrote:
> the sparc installer (and likely sparc64 installer) issue should be
> hacked around in -current, by not removing .eh_frame as previously
> posted. we can fix it properly later when we know why.
> hopefully the sparc testbed will fix itself now.
> the sparc smp problem i have tracked down (and it is not a gcc 7
> specific issue) and i don't yet understand what is going, but i
> have a very simple workaround for it as well.
> the problem happens in the new npf module. i saw this change in
> my lists fairly often and ignored it, but i finally managed to
> convince myself via bisect it was the problem.
> as a guess, i hacked npf_modctl() to return ENOTTY instead of
> calling npf_init(). this allowed my kernel to function fine.
> i then noticed npf_init() is static and only called once from
> npf_modctl(), and for some reason i tried compiling it with the
> static removed. this works. i've confirmed this result a few
> times because it is so surprising.
> as a test, i inlind the contents directly and the same problem
> occurs, so i suspect what ever is wrong happens when inlined.
> i'm still trying to understand the full asm for either version
> but i haven't yet figurd out what is wrong here.
> this is very confusing, and if a compiler bug, is not a new one.
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