---

yaml
---
r: 4834
b: refs/heads/master
c: f6ae60a
h: refs/heads/master
v: v3

Author: marijnh

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 0ba10378340f0d975c7aa88ad258b4367b3d35c3
+refs/heads/master: f6ae60a432d041b4387f9655dc7e8551b8cbed00

trunk/src/comp/middle/trans.rs

@@ -5438,8 +5438,9 @@ fn zero_alloca(cx: &@block_ctxt, llptr: ValueRef, t: ty::t) -> result {
     let bcx = cx;
     if ty::type_has_dynamic_size(bcx_tcx(cx), t) {
         let llsz = size_of(bcx, t);
-        let llalign = align_of(llsz.bcx, t);
-        bcx = call_bzero(llalign.bcx, llptr, llsz.val, llalign.val).bcx;
+        // FIXME passing in the align here is correct, but causes issue #843
+        // let llalign = align_of(llsz.bcx, t);
+        bcx = call_bzero(llsz.bcx, llptr, llsz.val, C_int(0)).bcx;
     } else {
         let llty = type_of(bcx_ccx(bcx), cx.sp, t);
         bcx.build.Store(C_null(llty), llptr);