On Dec 20, 2012, at 11:07 AM, Eli Bendersky <eliben at google.com> wrote: > +# RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - |& FileCheck %s <multiple files> I don't think lit supports that redirection syntax. Please use … 2>&1 | FileCheck /jakob