0a8bffceb3
rust_start will always call _rust_main with the command line args, and it is _rust_main's responsibility to free the args ivec heap. _rust_main will be generated slightly differently depending on whether main takes an ivec or not: if so then it's just passed through to main, otherwise it frees the ivec directly.
This is a compiler and suite of associated libraries and documentation for the Rust programming language. See LICENSE.txt for terms of copyright and redistribution. See http://github.com/graydon/rust for current development page.