On May 3, 2012, at 11:10 AM, Chandler Carruth wrote:

> On Thu, May 3, 2012 at 10:47 AM, Chad Rosier <[email protected]> wrote:
> 
> On May 3, 2012, at 10:37 AM, Chandler Carruth wrote:
> 
>> On Thu, May 3, 2012 at 10:07 AM, Chad Rosier <[email protected]> wrote:
>> Author: mcrosier
>> Date: Thu May  3 12:07:55 2012
>> New Revision: 156079
>> 
>> URL: http://llvm.org/viewvc/llvm-project?rev=156079&view=rev
>> Log:
>> [driver crash diagnostics] Remove more flags that reference absolute paths 
>> that
>> aren't necessary to reproduce the clang crash.
>> 
>> Out of curiosity, is it easy to test this by triggering a crash in the test 
>> suite, and then FileCheck-ing the resulting repro stuff?
> 
> In r155205 (http://llvm.org/viewvc/llvm-project?view=rev&revision=155205) I 
> added a simple hack to cause the compiler to crash on demand.  We could add a 
> test case to cause a crash, but what were checking is the contents of the 
> generated script file, which has a non-deterministic name.  You'd have to 
> grep the name from the clang output and then FileCheck the output script.  
> Doesn't sound too difficult, but since this is off the critical path I 
> honestly haven't spent a lot of time trying to get that to work.  I can do so 
> if you (or whoever) really think it's necessary.
> 
> It's not a big deal... I was more thinking if we're going to keep tweaking 
> this, maybe we should get some testing coverage of it.

I expect the noise to die down shortly, but test cases are never a bad thing.

> 
> If you're interested in testing it, I would just add an environment variable 
> much like the one you added to force the crash (maybe the same one?) that 
> forces the output to a particular location.

I like this idea.

> 
> Actually, now that I think about it, I have a very distinct use case for 
> exactly such an environment variable... maybe I can write up a patch and send 
> it your way?


Sounds good to me.  Thanks, Chandler.

 Chad
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