[Octave-bug-tracker] [bug #52627] Failing BIST tests on Mac OS X

[Sebastian]

Follow-up Comment #26, bug #52627 (project octave):

@Rik: It's quite complicated to understand what is going on because this
problem occurs mainly when using homebrew as a package manager. Homebrew calls
configure and make from its own environment (using ruby). The code

if (ispc ())
  envname = "TMP";
else
  envname = "TMPDIR";
endif
envdir = getenv (envname);
unsetenv (envname);
## Strip trailing file separators from P_tmpdir
def_tmpdir = P_tmpdir;
while (length (def_tmpdir) > 2 && strfind (filesep ("all"), def_tmpdir(end)))
  def_tmpdir(end) = [];
endwhile
## Test 0-argument form
fname = tempname ();
[tmpdir, tmpfname] = fileparts (fname);
assert (tmpdir, def_tmpdir);

fails with

error: ASSERT errors for:  assert (tmpdir,def_tmpdir)

  Location  |  Observed  |  Expected  |  Reason
     []          /tmp       /var/tmp     Strings don't match


and experiments in that environment show

octave:1> fname = tempname ()
fname = /var/tmp/oct-ynlTG9
octave:2> setenv("TMPDIR","/tmp")
octave:3> fname = tempname ()
fname = /var/tmp/oct-LmECe5
octave:4> setenv("TMP","/tmp")
octave:5> fname = tempname ()
fname = /tmp/oct-zFVL0A

and in my user environment

octave:1> fname = tempname ()
fname = /var/folders/yr/0kxqs6ns5_ncvr7v_sg568ww0000gp/T/oct-vpF8Ub
octave:2> setenv("TMPDIR","/tmp")
octave:3> fname = tempname ()
fname = /var/tmp/oct-e4Moqt
octave:4> setenv("TMP","/tmp")
octave:5> fname = tempname ()
fname = /tmp/oct-yIW2Zw

However, in either case "TMP" seems to have preference over "TMPDIR".

Bye
Sebastian

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