[llvm-dev] How to write an 'expected failure test'

Brian Cain via llvm-dev llvm-dev at lists.llvm.org
Fri Feb 22 08:16:17 PST 2019

Most tests like this use the 'not' prefix in their 'RUN' line.  Note that
you may want to redirect stderr independently for these tests.

On Fri, Feb 22, 2019 at 10:14 AM Xing GUO via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> Hi devs,
> I want to write a test that expected to fail. And I want to check the
> error message. But I found that if the command exit code is not 0, then the
> test will fail. Also, if I add `XFAIL: *`, it will not check the command
> line output ... Can someone help me?
> Best Regards,
> Xing
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> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
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