Re: Making yyGLRStackItem know its type

[Paul Eggert]

Akim Demaille <address@hidden> writes:

> with both cases starting by a Boolean was a bit troublesome.  I do
> understand that this allows shorter and simpler names, simple
> assignments, but it is a bit unusual (to my eyes).  Could it be also
> to optimize in some way to size of the union?

In general, yes, because it removes the need for the C compiler to
align the first non-bool member to the strictest alignment of all the
later members.  Hence the resulting union might be smaller.

It's common usage and it conforms to the C Standard.  Also, if memory
serves (I'm not a C++ expert), C++ caters to this usage as well.  If
it's merely a style issue, I'd leave things be.