---

yaml
---
r: 35384
b: refs/heads/master
c: 55aa498
h: refs/heads/master
v: v3

Author: brson

[refs]

@@ -1,5 +1,5 @@
 ---
-refs/heads/master: b60a0be424c9e3ef6266ef4da17397ea90db9694
+refs/heads/master: 55aa49882d43f338da48ec870ddfbe99b74ca11e
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
 refs/heads/snap-stage3: eb8fd119c65c67f3b1b8268cc7341c22d39b7b61
 refs/heads/try: d324a424d8f84b1eb049b12cf34182bda91b0024

trunk/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 {