FIXME(#19497) -- Stop messing around and just give rustc 32MB of stac…

…k unconditionally. This is prompted by some sort of bug in trans that causes a stack overflow when the modules in trans are made private. (In particular, the overflow can also be avoided by making `controlflow` and `callee` public, but that seems strictly worse than just using more stack.)

src/librustc_driver/lib.rs

@@ -470,13 +470,7 @@ pub fn list_metadata(sess: &Session, path: &Path,
 /// The diagnostic emitter yielded to the procedure should be used for reporting
 /// errors of the compiler.
 pub fn monitor(f: proc():Send) {
-    // FIXME: This is a hack for newsched since it doesn't support split stacks.
-    // rustc needs a lot of stack! When optimizations are disabled, it needs
-    // even *more* stack than usual as well.
-    #[cfg(rtopt)]
-    static STACK_SIZE: uint = 6000000;  // 6MB
-    #[cfg(not(rtopt))]
-    static STACK_SIZE: uint = 20000000; // 20MB
+    static STACK_SIZE: uint = 32000000; // 32MB
 
     let (tx, rx) = channel();
     let w = io::ChanWriter::new(tx);