Re: assertion failure in regcache.c

[Andrew Cagney <ac131313@redhat.com>]

> I just did an update and now I'm getting an assertion failure with my sh4
> port.
> 
> gdb/regcache.c:241: internal-error: init_regcache_descr: Assertion
> `descr->register_offset[i] == REGISTER_BYTE (i)' failed.
> 
> My code worked in the past few weeks so it looks like this is something
> recent.  The only change I can see to regcache.c and sh-tdep.c is to use
> DEPRECATED_REGISTER_BYTES.  Can anyone give any suggestions as to what might
> be going wrong?

Can you go back to the ``working'' code and check the output from:

	(gdb) maint print registers

(look for footnotes).  I added a sanity check with:

2003-05-04  Andrew Cagney  <cagney@redhat.com>

         * sentinel-frame.c (sentinel_frame_prev_register): Replace
         REGISTER_BYTE with register_offset_hack.
         * regcache.c (init_regcache_descr): When REGISTER_BYTE_P, check
         that REGISTER_BYTE is consistent with the regcache.
         * gdbarch.sh (REGISTER_BYTE): Add a predicate.
         * gdbarch.h, gdbarch.c: Regenerate.

however, I suspect that there has been long standing disagreement over 
the offsets only nothing was noticing it :-/

Andrew