Re: [rfa/testsuite] Get the inferior to dump core

[Michael Chastain <mec.gnu@mindspring.com>]

I'm not too worried about the interface (!), it's standardizing
the guts that I'm worried about.

  - portable way to set the core dump size to "unlimited".
    i suspect this is more portable to do at the C level with
    setrlimit() rather than the shell level with the bitter
    comments about braindamaged shells and ulimit.

  - creating a subdirectory
    corefile.exp does this at the TCL level, which immediately
    runs into a build != host problem.  Again I suspect this
    might be better to do in the inferior program:
      mkdir("coredir");
      chdir("coredir");
    coredir does not have to be unique.

  - picking up the core file
    there should be exactly ONE file in coredir.  If there are
    zero files, or two more files, then the test script cannot
    proceed.

    The problem is figuring out the name of that file.
    It's on the host machine so just "glob" will not cut it.
    I don't know if there's a "remote glob" available or what.

    After figuring out the name of the file, do remote_upload
    to get it back to the build machine to a fixed name.

That's just a half-assed look at gcore.exp.

Now, is it worth anyone's time to actually do this? 

I don't want to get into it myself because I want to get into
"user specifies which compiler to run for each language".
That's high priority and it's a big overhaul.