---

yaml
---
r: 57011
b: refs/heads/try
c: d3a58f3
h: refs/heads/master
i:
  57009: 001a139
  57007: 3c3ba77
v: v3

Author: bors

[refs]

@@ -2,7 +2,7 @@
 refs/heads/master: c081ffbd1e845687202a975ea2e698b623e5722f
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
 refs/heads/snap-stage3: 79a2b2eafc3c766cecec8a5f76317693bae9ed17
-refs/heads/try: 9618e5b459198865ab70ba7cf3a3edffdef1f7f5
+refs/heads/try: d3a58f37979496efdf15bf016ebccc17b007a6cc
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/ndm: f3868061cd7988080c30d6d5bf352a5a5fe2460b
 refs/heads/try2: 147ecfdd8221e4a4d4e090486829a06da1e0ca3c

branches/try/src/librustc/middle/trans/cabi_x86.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use driver::session::os_win32;
+use driver::session::{os_win32, os_macos};
 use core::option::*;
 use lib::llvm::*;
 use lib::llvm::llvm::*;
@@ -38,12 +38,12 @@ impl ABIInfo for X86_ABIInfo {
 
         // Rules for returning structs taken from
         // http://www.angelcode.com/dev/callconv/callconv.html
+        // Clang's ABI handling is in lib/CodeGen/TargetInfo.cpp
         let sret = {
             let returning_a_struct = unsafe { LLVMGetTypeKind(rty) == Struct && ret_def };
-            let big_struct = if self.ccx.sess.targ_cfg.os != os_win32 {
-                true
-            } else {
-                llsize_of_alloc(self.ccx, rty) > 8
+            let big_struct = match self.ccx.sess.targ_cfg.os {
+                os_win32 | os_macos => llsize_of_alloc(self.ccx, rty) > 8,
+                _ => true
             };
             returning_a_struct && big_struct
         };

branches/try/src/test/run-pass/extern-pass-TwoU32s.rs

@@ -11,8 +11,6 @@
 // Test a foreign function that accepts and returns a struct
 // by value.
 
-// xfail-macos Broken on mac i686
-
 #[deriving(Eq)]
 struct TwoU32s {
     one: u32, two: u32

branches/try/src/test/run-pass/extern-return-TwoU32s.rs

@@ -8,8 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-// xfail-macos Broken on mac i686
-
 struct TwoU32s {
     one: u32, two: u32
 }