On Thu, Jun 27, 2013 at 2:42 PM, Florin Patan <florinpa...@gmail.com> wrote:
> Hello, > > > I'd like to start working on a bug, > https://bugs.php.net/bug.php?id=52355 but I'm not sure where to start > investigating exactly. > I've compared the 5.2.2 and 5.2.3 changes and there's nothing that > jumps into my eyes. > Could I get some pointers on how to start working on debugging this > and how to eventually fix it? > Also, while I'll fix this I plan to write an article about starting > from scratch and document every step in order to identify where the > bug is located and how to test/fix it so that others could use this > information. > Thanks. > Here is the implementation of the unary minus operator: http://lxr.php.net/xref/PHP_TRUNK/Zend/zend_language_parser.y#776 As you can see -a is translated to 0 - a. In this particular case -0 is translated to 0 - 0, which is 0, not -0. Hope this helps, Nikita
