symfony/symfony — pull request #5122 by joonsp (2012-07-31 11:08:19+00:00)
Title: Read from annotations to be true by default

The class annotation states that the mapping should be read from annotations by default.
If $annotations is set to false by default, it doesn't do that, and the buildDefault function throws a MappingException when called with no arguments.

Or perhaps the class annotation instructions are outdated and there's a BC break?