E0265 needs to be updated to new format

[sophiajt]

From: src/test/compile-fail/issue-23302.rs

Error E0265 needs a span_label, updating it from:

error[E0265]: recursive constant
  --> src/test/compile-fail/issue-23302.rs:14:5
   |
14 |     A = X::A as isize, //~ ERROR E0265
   |     ^^^^^^^^^^^^^^^^^

To:

error[E0265]: recursive constant
  --> src/test/compile-fail/issue-23302.rs:14:5
   |
14 |     A = X::A as isize, //~ ERROR E0265
   |     ^^^^^^^^^^^^^^^^^ recursive constant

Bonus: I'm not sure how difficult this will be, but if we can underline the part of the constant that is causing the recursion, that might be even better.

error[E0265]: recursive constant
  --> src/test/compile-fail/issue-23302.rs:14:5
   |
14 |     A = X::A as isize, //~ ERROR E0265
   |         ^^^^ recursion not allowed in constant

[yossi-k]

on it

[sophiajt]

@yossi-k - I'm releasing this so someone else can volunteer since it's gone 19 days without a fix. There are other error codes if you're interested in fixing more.

[mikhail-m1]

I try to understand how static recursive works, but I cannot find any example with enum which compiles.
But I found example witch one crash compiler:

const I : i32 = J;
const J : i32 = Foo::A;
enum Foo { A = I }
fn main() {}

May some RFC or other doc about this feature?

[sophiajt]

You may want to ask around on #rust-internals on irc.mozilla.org.

Also, can you file an issue for the compiler crash?

[mikhail-m1]

I'll create Issue about stack overflow and try to fix it
For now I've done next

error[E0265]: recursive constant
  --> src/test/compile-fail/issue-23302.rs:14:5
   |
14 |     A = X::A as isize, //~ ERROR E0265
   |         ^^^^^^^^^^^^^ recursion not allowed in constant

It's not the aim but better then now
I'll try to improve it later