I Can\'t run Spring. Here is the error log.
myid-no-MacBook-Pro:myid$ spring
/Users/myid/.rbenv/versions/1.9.3-p484/lib/ruby/gems/1.9.1/gems/spring-0.0.10/li
I found out a solution.
In my case, after changing the c compiler from clang to apple-gcc42 worked perfectly. Here are the commands I used.
$ rbenv uninstall 1.9.3-p484
$ which gcc-4.2
/usr/local/bin/gcc-4.2
$ CC=/usr/local/bin/gcc-4.2
$ rbenv install 1.9.3-p484
$ rbenv rehash
Related link: https://github.com/rails/spring/issues/274