Tomi Ollila venit, vidit, dixit 2022-02-09 21:50:35:
> On Wed, Feb 09 2022, Michael J. Gruber wrote:
> 
> > If gdb is present but for some reason `atomicity.py` fails to write to
> > the output file then the test fails with some ugly bash errors in the
> > wrong places (because the outcount variable is empty).
> >
> > Therefore, set up the outcount file with `0` to get the test script to
> > rund and the test to fail fpr a clearer reason.
> >
> > Background: We noticed this with arch armhfp emulated on x86_64 in
> > Fedora's COPR test build environment.
> >
> > Signed-off-by: Michael J Gruber <git@grubix.eu>
> > ---
> >  test/T380-atomicity.sh | 1 +
> >  1 file changed, 1 insertion(+)
> >
> > diff --git a/test/T380-atomicity.sh b/test/T380-atomicity.sh
> > index 49df5c38..caac28a3 100755
> > --- a/test/T380-atomicity.sh
> > +++ b/test/T380-atomicity.sh
> > @@ -64,6 +64,7 @@ if test_require_external_prereq gdb; then
> >      # -tty /dev/null works around a conflict between the 'timeout' wrapper
> >      # and gdb's attempt to control the TTY.
> >      export MAIL_DIR
> > +    echo -n 0 > outcount
> 
> printf 0 > outcount (is my suggestion)

Would by mine, too :)
Again, this is not the style of T380 which uses echo exclusively so far.

I do think that printf is more stable across different systems and
shells, so a mass replace would be in order (but requires careful nl
checking).

Overally in the test suite, [f]printf wins by 8:3 roughly.

> 
> >      ${TEST_GDB} -tty /dev/null -batch -x $NOTMUCH_SRCDIR/test/atomicity.py notmuch 1>gdb.out 2>&1
> >  
> >      # Get the final, golden output
> > -- 
> > 2.35.1.306.ga00bde9711
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