Fix stderr redirection in test to work on all platforms

BUG=https://code.google.com/p/nativeclient/issues/detail?id=3429
[email protected]

Review URL: https://codereview.chromium.org/15470008

Author: eliben

test/Transforms/NaCl/rewrite-setjmp-store-error.ll

@@ -0,0 +1,13 @@
+; RUN: opt < %s -rewrite-pnacl-library-calls -S 2>&1 | FileCheck %s
+; Test that the pass enforces not being able to store the address
+; of setjmp.
+
+declare i32 @setjmp(i64*)
+
+define i32 @takeaddr_setjmp(i64* %arg) {
+  %fp = alloca i32 (i64*)*, align 8
+; CHECK: Taking the address of setjmp is invalid
+  store i32 (i64*)* @setjmp, i32 (i64*)** %fp, align 8
+  ret i32 7
+}
+