[Bug c/57862] invalid read struct uint32_t member (ARMV5)

[mendola at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57862

--- Comment #4 from Gaetano Mendola <mendola at gmail dot com> ---
At this point I'm very puzzled. The fact I have to use memcpy instead of an
assignment for sake of portability is plain wrong.

Consider that only looking at:

  struct in_addr myInAddr;
  myInAddr.s_addr = theIpHeader->daddr;

I have no idea if the theIpHeader pointer was the result of a malloc or the
result of an assignment with a not aligned offset. Unless of course I inspect
the pointer value. 

The entire application (my application) suppose, as I think it should, that an
assignment of a value retrieved from a structure member is correctly done, note
that I'm not relying if this is done with 1 bus access, 2 or whatever. 

I'm going to put 2 in /proc/cpu/alignment and considering it as a kernel
configuration problem. 

btw clang behaves correctly even with a "kernel not well configured".