Re: [PATCHv2 1/2] tests: create an interactive gdb session with the 'debug' helper

> The 'debug' test helper is supposed to facilitate debugging by running
> a command of the test suite under gdb.  Unfortunately, its usefulness
> is severely limited, because that gdb session is not interactive,
> since the test's, and thus gdb's standard input is redirected from
> /dev/null (for a good reason, see 781f76b15 (test-lib: redirect stdin
> of tests, 2011-12-15)).
> 
> Redirect gdb's standard file descriptors from/to the test
> environment's stdin, stdout and stderr in the 'debug' helper, thus
> creating an interactive gdb session (even in non-verbose mode), which
> is much, much more useful.