Re: alignas (C11)

Peter Eisentraut <peter@eisentraut.org> writes:
> Well, in C11, alignas is itself a macro (defined to _Alignas).  I 
> suppose not in C++ though.  That seems too tricky, though.  I went with 
> your original proposal of disabling the affected typedefs on the 
> affected platform.  That seems safest.  These types aren't likely to be 
> used in extensions anyway, so this should have minimal practical impact.

I suspected that we'd have to supply the types as abstract structs
per my earlier suggestion, and just found a good reason why:
"headerscheck --cplusplus" is failing for me on RHEL8, because it
tries to parse all headers under C++.  This is blocking progress on
another patch, so I went ahead and committed the addition.

            regards, tom lane