Re: [PATCH 2/2] DWARF5: Add DW_TAG_aligned_type support.

[Jason Merrill]

I'm dubious about adding a tag for alignment, because it doesn't 
participate in the type system; in C and C++, it's an attribute of a 
struct or variable declaration, but the variable has the same type as 
another variable without the explicit alignment.  In the GNU extension 
it can also be applied to a typedef, but I think there I'd still put the 
attribute on the typedef rather than introduce a new tag.

Jason