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bug#46256: [feature/native-comp] AOT eln files ignored if run from build


From: Andrea Corallo
Subject: bug#46256: [feature/native-comp] AOT eln files ignored if run from build tree
Date: Tue, 09 Mar 2021 19:23:43 +0000
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux)

Eli Zaretskii <eliz@gnu.org> writes:

>> From: Andrea Corallo <akrl@sdf.org>
>> Cc: pipcet@gmail.com, 46256@debbugs.gnu.org, andrewjmoreton@gmail.com
>> Date: Tue, 09 Mar 2021 17:04:58 +0000
>> 
>> >   else
>> >     *saved_cu = comp_u_lisp_obj;
>> >
>> > But then we clobber the value of comp_u_lisp_obj here:
>> >
>> >      data_ephemeral_vec =
>> >        load_static_obj (comp_u, TEXT_DATA_RELOC_EPHEMERAL_SYM);
>> >
>> >      EMACS_INT d_vec_len = XFIXNUM (Flength (data_ephemeral_vec));
>> >      for (EMACS_INT i = 0; i < d_vec_len; i++)
>> >        data_eph_relocs[i] = AREF (data_ephemeral_vec, i);  <<<<<<<<<<<
>> >
>> > Is this likely to be due to that problem?
>> 
>> Interesting, how can we clobber the value of 'comp_u_lisp_obj' that is
>> stack allocated while writing into 'data_eph_relocs[i]' that is static
>> allocated in an eln?
>
> I don't know, but the problem disappeared after I rebuild with the
> latest branch, so I guess it was related to the bug fixed in
> 380ba045c4 after all.

Super

Thanks

  Andrea





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