Re: [PATCH v5 1/2] branch: accept multiple upstream branches for tracking

Glen Choo [off-list ref] writes:

We print ref_string, which is a strbuf. This causes t/t3200-branch.sh to
segfault on my mac + clang, but inconsistently! With -O2, it doesn't
always segfault, but the wrong memory is read:

  Branch 'my3' set up to track remote branch local from 'Branch '%s' set up to track remote branch %s from '%s'.'.

I forgot to mention this earlier but in this example, the test *passes*
even though the stderr message is obviously wrong. I don't see any
coverage of the help message in t3200, which is a bit worrying to me.

After this series is done, is it worth adding test coverage of the help
message?