sshd broken on arm?

[Mark Tinguely]

<deleted background on sshd failing>

>  Hmmm Just to make sure that I'm on the right page. On FreeBSD ARM one
>  is not supposed to be able to access unaligned memory? Ie. an int that
>  does not start on an address that is a multiple of 4.

Some ARM implementation can be programmed to do unaligned accesses, but
yes, halfword, word and long word accesses must be properly aligned.

>  In a C function if you have something like "char tmp[4]", can you assume
>  that the compiler will align it on a 4 byte boundary or can it do it on
>  a byte boundary?

No it will not automatically be align correctly to be used as a integer.

>  If one cannot access unaligned ints and char arrays are not int aligned,
>  then we were just lucky that the code worked at some stage.

The items above this array were probably a multiple of 4 bytes and something
has changed in a structure to make this no longer true. You can find the
offending structure and pad it to make it a multiple of 4 bytes, or cheat
and declare a integer before the char array.

--Mark Tinguely