lkml.org 
[lkml]   [2019]   [Mar]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 01/17] kbuild: Disable -Waddress-of-packed-member for gcc 9
> Lol... we're actively moving away from the C standard on many places.

Yes and also packed is not part of the C standard.

> Why does the silly compiler think it is a problem to take the address of
> a member of a packed structure? That sounds like something that's
> perfectly fine and useful.

Probably because a pointer reference doesn't do whatever magic
may be needed on architectures with poor misalignment handling.
In theory you would need memcpy().

In practice it's likely a lot of false positives, like
the architectures with poor misalignment handling are usually
in SOCs without PCI and they don't have the devices
with the problematic drivers.

-Andi

\
 
 \ /
  Last update: 2019-03-22 17:59    [W:0.569 / U:0.052 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site