Source code merging

I have a patch to gcc-4.3.1. But i need upgrade to开发者_如何学Go gcc-4.5.0 with keeping functionality added with the patch. Please explain me how i can do that?

Do you have a local copy of the gcc sources in your svn? In this case, merge your changes from your local gcc-4.3.1 copy into your local gcc-4.5.0 copy. There's a section in the svn book about vendor branches, that deals with this problem: http://svnbook.red-bean.com/en/1.5/svn.advanced.vendorbr.html

Another option is to use svn diff to create patch files which you apply to your checked out gcc-4.5.0 sources.