Re: [parisc-linux] Back to evms-1.0.1 && unaligne access && gdb

[Grant Grundler <grundler@dsl2.external.hp.com>]

jsoe0708@tiscali.be wrote:
> >Since start_sect and nr_sects are ints, this code will also generate an
> >"unaligned data reference fault" like the original code did.
> 
> Trust me it does not? (it works fine)

then I'll wager there is padding between the char and int fields
of that struct.

> >You need
> >to find the origin of "struct partition *p" when the address is un-aligned.
> >
> Very hard to define:
> a. the previous code works (again all odds)
> b. the following trial code:
...

> int main(int argc, char * * argv, char * * env) {
> 
>     struct partition p1, p2;

...
> did not reproduce the problem.

Things on the stack (local var) are properly aligned.
Malloc a block of mem and then point to an unaligned address
in that block.

> What can I do to analyse this problem? (printing all p addresses and its
> elements
> during a run with the original code and compare with a run with modified
> code?)

yes. You want to verify the addreses are unaligned.

grant