Re: hybrid_malloc on CANNOT_DUMP?

[Ken Raeburn]

> On Nov 20, 2016, at 20:03, Paul Eggert <address@hidden> wrote:
> 
> Daniel Colascione wrote:
>> Emacs on GNU/Linux and X11 crashes on startup in a CANNOT_DUMP configuration 
>> due
>> to some nonsense inside gmalloc. Why wouldn't we want to force 
>> hybrid_malloc=off
>> in a CANNOT_DUMP configuration?
> 
> Yes, that makes sense. More generally, the CANNOT_DUMP code has been 
> suffering from bitrot for some time. I just now made a pass through it to fix 
> some gotchas and installed the attached into Emacs master. It's still a mess, 
> but at least I can now do 'configure CANNOT_DUMP=yes 
> emacs_cv_var_doug_lea_malloc=no' and run 'make check', and most tests pass. 
> Hope this helps.

Sounds like it broke a little more since I tried it a few weeks ago. :-(
Back then, it didn’t break until it got to trying to byte-compile Lisp files.

Even with the configure options you specify here, I can’t get it to link on a 
GNU/Linux configuration:

emacs.o: In function `main':
/home/ken/dev/emacs/emacs/lx2/src/../../src/emacs.c:725: undefined reference to 
`my_endbss_static'
/home/ken/dev/emacs/emacs/lx2/src/../../src/emacs.c:725: undefined reference to 
`my_endbss'
/home/ken/dev/emacs/emacs/lx2/src/../../src/emacs.c:725: undefined reference to 
`my_endbss'
/home/ken/dev/emacs/emacs/lx2/src/../../src/emacs.c:725: undefined reference to 
`my_endbss_static'
collect2: error: ld returned 1 exit status
Makefile:611: recipe for target 'temacs’ failed
$

my_endbss is no longer defined if CANNOT_DUMP is true, but emacs.c references 
it if GNU_LINUX is defined.

Ken