[cfe-commits] r149127 - in /cfe/trunk: include/clang/AST/ include/clang/Parse/ include/clang/Sema/ lib/AST/ lib/Parse/ lib/Sema/ lib/Serialization/ tools/libclang/

Richard Smith richard at metafoo.co.uk
Fri Jan 27 23:41:04 PST 2012

On Fri, Jan 27, 2012 at 11:31 PM, Enea Zaffanella <zaffanella at cs.unipr.it>wrote:

> On 01/27/2012 08:39 PM, Richard Smith wrote:
>> Is there some way you can add tests for this?
>> On Fri, Jan 27, 2012 at 1:46 AM, Abramo Bagnara
>> <abramo.bagnara at gmail.com <mailto:abramo.bagnara at gmail.**com<abramo.bagnara at gmail.com>>>
>> wrote:
>>    Author: abramo
>>    Date: Fri Jan 27 03:46:47 2012
>>    New Revision: 149127
>>    URL: http://llvm.org/viewvc/llvm-**project?rev=149127&view=rev<http://llvm.org/viewvc/llvm-project?rev=149127&view=rev>
>>    <http://llvm.org/viewvc/llvm-**project?rev=149127&view=rev<http://llvm.org/viewvc/llvm-project?rev=149127&view=rev>
>> >
>>    Log:
>>    Added source location for the template keyword in AST template-id
>>    expressions.
> Short answer: no way that we are aware of.
> Longer answer:
> the changes in both r149124 and r149127 are improving upon the "syntactic
> aspects" of the AST representation. Their effect can be observed by
> inspecting the output produced by -ast-print; see, for instance, the
> example code in
>  http://lists.cs.uiuc.edu/**pipermail/cfe-dev/2012-**January/019564.html<http://lists.cs.uiuc.edu/pipermail/cfe-dev/2012-January/019564.html>
> As far as we know, the output of -ast-print is just a convenience
> (probably, to simplify visual debugging of the AST). Nonetheless, the added
> info is important for some source-code based applications.

These tests would not be the first in the test-suite to run FileCheck over
the output of -ast-print. That kind of test (while not ideal) seems much
better than making large changes with no test coverage. That obviously
won't check whether the source location is correct, but it will check
whether it's valid in the right set of circumstances.

- Richard
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