On Aug 1, 2014, at 11:44 AM, Reid Kleckner <[email protected]> wrote:

> What is HasAlignAttribute, and how is it different from AlignmentIsRequired? 
> I have a feeling that they are different names for the same thing. If you 
> want to rename it, that's fine with me.
> 

I first thought I could use AlignmentIsRequired. But then I noticed that 
AlignmentIsRequired  is set only if current typedef has explicit
alignment. (see Decl::getMaxAlignment). We want to make sure that a typedef of 
an aligned typedef is 
still considered explicitly aligned (and not to modify its alignment). My patch 
has a test for this case.
- Fariborz

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