Re: aranym bug, manifests as "ida_remove called for id=13" on recent kernels

Brad Boyer
2010-10-11T05:24:46Z

On Mon, Oct 11, 2010 at 03:41:03AM +0100, Al Viro wrote:
> Argh... OK, going through aranym with debugger has exhonorated it. My
> apologies ;-/ It *is* gcc in sid. Testcase:
>
> extern int foo(int);
> void *bar(int n)
> {
> return (void *)foo(n);
> }
>
> and gcc -S -O2 turns that into
> bar:
> link.w %fp,#0
> unlk %fp
> jra foo
>

I presume the bug is that foo put the return value in %d0 while bar
should have its return value in %a0. This function isn't eligible
for the optimization being used due to this need to move the result
into a different register.

> Spot the obvious bug... BTW, why on the Earth does debian-ports m68k tree
> use gcc-4.3 with Cthulhu-scaring 700Kb gzipped patch and does *not* have
> gcc-4.4?

I believe that gcc-4.4 for m68k is being held up by the TLS support patches.
While I haven't been personally involved to any great degree, I got the
impression that the work is pretty much done other than getting it included.

Brad Boyer
flar@allandria.com