On Fri, Feb 13, 2009 at 11:03:51AM -0800, Anthony Newnam wrote: > Thanks Joe. > > As far as I know the problem I'm seeing isn't a regression but perhaps > this script could still be useful. I don't really understand how it is > supposed to work, since it doesn't appear be working off svn updates.
I haven't looked at it in years, so I can't help you there. When Janis first wrote the script gcc was still using CVS. But it should be useful as a starting point. > Should I do something like a binary svn search between revisions > 124707 and 132947? It takes such a long amount of time to compile g++, > almost a half an hour with my quad core, that it didn't seem practical > try to do build so many times. I guess there is probably a way to > build g++ without the rest of gcc, but I haven't seen an option for > it. Yes. It would suffice to only build phase 1 of g++, without any libraries, to do what you want, so that should be faster. You don't need a full bootstrap. If the endpoints you list are correct, that's 8240 revisions to search, but a binary search only needs to try ceil(log2(8240)) revisions, or 14. So if each build and test takes 30 minutes, you'll have your answer in seven hours.
