Proper error reporting in the cexp evaluator

de53aa1
Opened by Graydon Hoare at 2011-01-27 00:45:28

The front-end has a small expression-language for guiding conditional compilation at the crate / configuration level. This language evaluator has crappy error handling. Fix it.

  1. WONTFIX (not required for bootstrapping)

    Graydon Hoare at 2011-01-27 00:45:28