parser_tree.cpp example not compiling in VS 2022, as of PEGTL 3.2.6

[sephirot47]

It complains about PEGTL\include\tao\pegtl\match.hpp(77,16): error C2065: 'type': undeclared identifier.
I think it has something to do with the unwind change introduced in PEGTL 3.2.6, but no idea. Working in PEGTL 3.2.5

[d-frey]

Do you mean version 3.2.6 instead of 2.3.6?

Also, we have CI jobs for VS 2022 which are passing. See https://github.com/taocpp/PEGTL/actions/runs/3950723230. I'm therefore not sure what to do. Can you figure out a fix and create a PR?

[sephirot47]

Yes, I meant 3.2.6 and 3.2.5 xD (I have already edited the issue and message)
I would really love to fix it myself, but the error trace is pretty obscure. I tried but didn't manage to fix it 😞
If the jobs pass, maybe it's something I have misconfigured locally, but I just downloaded and tested the versions without touching anything, and 3.2.5 worked while 3.2.6 & 3.2.7 don't. Sorry I can not help much more with this 😖

[untrioctium]

I experienced this on an older version of MSVC, but after upgrading to 19.34.31942.0, I can no longer reproduce. Looks like a fixed compiler bug.

[untrioctium]

I think I may have found the issue, as I experienced it again. Looks like if you have type defined at global scope in your code where parse_tree can see it, MSVC will see this expression at 3.2.7's parse_tree.hpp at line 436:

internal::make_control< Node, Selector, Control >::template type

And not be happy about type there, even though it should be obviously a name under make_control. I guess it is a compiler bug? type might be a silly name to pick at global scope, but I feel like this should work.