[LLVMdev] Problem with regression tests using stderr

Tanya M. Lattner tonic at nondot.org
Mon Nov 26 17:15:38 PST 2007

Can you please file a bug for this (i havent seen one yet).


On Mon, 26 Nov 2007, Dan Gohman wrote:

> On Tue, Nov 20, 2007 at 07:01:25PM -0800, Bill Wendling wrote:
>> I think that it's a hold-over to how things used to be done. IIRC,
>> you had to have the && at the end of the RUN line if you had another
>> RUN line that needed to be executed. That's no longer the case, of
>> course.
> Thanks. I'll remove the && from the one test that still has it then.
> Then we can look at removing the associated code from llvm.exp and fixing
> the bug. This will take a while though, at it exposes a large number of
> failures that are currently hidden.
>> If you want to catch stderr, there is one test doing that:
>> Analysis/ScalarEvolution/2007-07-15-NegativeStride.ll:
>> ; RUN: llvm-as < %s | opt -analyze -scalar-evolution 2>&1 | grep
>> "Loop bb:  100 iterations"
> 2>&1 doesn't evoke the desired behavior; the RUN line is unfortunately
> interpreted by TCL rather than a regular shell. The llvm.exp bug has
> allowed this and a variety of other common bourne-shell-isms to slip by
> unnoticed.
> Dan

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