semicolons in struct definition cause "type definition required" error

[Robert Grant]

I may be in a small minority that use semicolons in Mata, and perhaps nobody else has found this before. If I use semicolons in a struct definition, like this:

struct Treenode {
        real matrix orders;
        real matrix ordered;
        real matrix sorted_data;
 }

then I will get an error:

type declaration required
(48 lines skipped)
--------------------------------------------------------------------------------------------
r(3000);

It took me a while to work out the cause. I reluctantly guess this is a bug... but maybe others know of a reason? The Mata Book doesn't use semicolons so it isn't mentioned.