Backward incompatibility: error path not available anymore

[brmzkw]

The code below raises a voluptuous error because extra data are forbidden by and empty schema.

from voluptuous import Schema

try:
    Schema({})({"extra": "invalid", "extra2": "invalid"})
except Exception as exc:
    print '\n'.join([', '.join(error.path) for error in exc.errors])

With voluptuous 0.9.3, the extra keys are displayed ("extra2", "extra").
With voluptuous >=0.10, the error path is not longer available and an empty string is displayed.

Is it an expected change, or is it a bug that needs to be fixed?

[vikbez]

PR #215 introduced this behaviour: a length check of schema was added here, so now _compile_dict is never called on an empty dict.

[alecthomas]

Agreed, that seems inconsistent.

[brmzkw]

Any chance to revert #215 then?

[kdeldycke]

Should we close that PR now that #298 has been proposed by @tbillon and merged?