---

yaml
---
r: 33965
b: refs/heads/snap-stage3
c: 55aa498
h: refs/heads/master
i:
  33963: c47ffe2
v: v3

Author: brson

[refs]

@@ -1,7 +1,7 @@
 ---
 refs/heads/master: cd6f24f9d14ac90d167386a56e7a6ac1f0318195
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
-refs/heads/snap-stage3: b60a0be424c9e3ef6266ef4da17397ea90db9694
+refs/heads/snap-stage3: 55aa49882d43f338da48ec870ddfbe99b74ca11e
 refs/heads/try: d324a424d8f84b1eb049b12cf34182bda91b0024
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/ndm: f3868061cd7988080c30d6d5bf352a5a5fe2460b

branches/snap-stage3/src/librustc/driver/session.rs

@@ -246,7 +246,10 @@ impl Session {
     fn borrowck_note_pure() -> bool { self.debugging_opt(borrowck_note_pure) }
     fn borrowck_note_loan() -> bool { self.debugging_opt(borrowck_note_loan) }
     fn no_monomorphic_collapse() -> bool {
-        self.debugging_opt(no_monomorphic_collapse)
+        // FIXME #4127: Type use is causing mysterious bustage on 32-bit archs
+        let type_use_unreliable = self.targ_cfg.arch == arch_x86;
+
+        self.debugging_opt(no_monomorphic_collapse) || type_use_unreliable
     }
 
     fn str_of(id: ast::ident) -> ~str {