[LLVMdev] Need help reproducing a sanitizer buildbot failure

[Adam Nemet]

On Apr 11, 2014, at 9:19 AM, Reid Kleckner <rnk at google.com> wrote:

> On Fri, Apr 11, 2014 at 12:35 AM, Kostya Serebryany <kcc at google.com> wrote:
> I wonder if we can configure the lit test runner to print the (tail of) test output on failure. 
> 
> You'd have to teach FileCheck, actually, since it's the one that consumes stderr in this case.  Rather than doing that, why not use *SAN_OPTIONS=log_file=blah.txt, and teach lit to dump that on failure?

I wished in the recent past that FileCheck would print its input upon failure.  It currently only prints a single line with “possible intended match: blah” which may or may not be the line you’re interested in.  I can work on this if people think that this would be a good feature.

Adam

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