From b473ce304f1d59036bc25fe5f65a22817c9d44fe Mon Sep 17 00:00:00 2001
From: Brian Anderson <banderson@mozilla.com>
Date: Fri, 9 Aug 2013 17:28:27 -0700
Subject: [PATCH] rustc: Obey RUST_MIN_STACK env var

A lot of people are hitting stack overflows in rustc. This will make it
easier to experiment with stack size.
---
 src/librustc/rustc.rs | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/librustc/rustc.rs b/src/librustc/rustc.rs
index 369045500ad9b..625a4aec544da 100644
--- a/src/librustc/rustc.rs
+++ b/src/librustc/rustc.rs
@@ -319,7 +319,13 @@ pub fn monitor(f: ~fn(diagnostic::Emitter)) {
     let ch_capture = ch.clone();
     let mut task_builder = task::task();
     task_builder.supervised();
-    task_builder.opts.stack_size = Some(STACK_SIZE);
+
+    // XXX: Hacks on hacks. If the env is trying to override the stack size
+    // then *don't* set it explicitly.
+    if os::getenv("RUST_MIN_STACK").is_none() {
+        task_builder.opts.stack_size = Some(STACK_SIZE);
+    }
+
     match do task_builder.try {
         let ch = ch_capture.clone();
         let ch_capture = ch.clone();