static recursion test added to compile-fail test suite

[cseale]

Issue #39059
r? @est31

[jseyfried]

nit: trailing commas are more idiomatic

[jseyfried]

nit: current year

[jseyfried]

nit: interleaving these errors with the code is more idiomatic

[jseyfried]

@bors delegate=est31

[bors]

✌️ @est31 can now approve this pull request

[est31]

This won't work, and is not what @jseyfried meant. Just make one line of code, followed by one line of comment, then one line of code, etc.

[cseale]

Yeah, I figured, it's just that the problem here is that it complains that the issue is always at line 21, and it is expecting 3 errors, which is confusing to me. Any ideas on why that is happening

[cseale]

this:

static L1: StaticDoubleLinked = StaticDoubleLinked{prev: &L3, next: &L2, data: 1, head: true};
//~^ ERROR recursive static (see issue #29719)
static L2: StaticDoubleLinked = StaticDoubleLinked{prev: &L1, next: &L3, data: 2, head: false};
//~^ ERROR recursive static (see issue #29719)
static L3: StaticDoubleLinked = StaticDoubleLinked{prev: &L2, next: &L1, data: 3, head: false};
//~^ ERROR recursive static (see issue #29719)

fails with this error:

unexpected errors (from JSON output): [
Error {
line_num: 21,
kind: Some(
Error
),
msg: "21:1: 21:95: recursive static (see issue #29719)"
},
Error {
line_num: 21,
kind: Some(
Error
),
msg: "21:1: 21:95: recursive static (see issue #29719)"
}
]
not found errors (from test file): [
Error {
line_num: 23,
kind: Some(
Error
),
msg: "recursive static (see issue #29719)"
},
Error {
line_num: 25,
kind: Some(
Error
),
msg: "recursive static (see issue #29719)"
}
]

Sorry, I probably should have led with this in the comments as opposed to making a dumb looking edit. I don't understand why line 21 throws 3 of the same error

[est31]

Hmm seems its a bug or something. See, that's why we are adding these tests.

[est31]

I think I'll approve it and then file a PR to fix the error message bug.

[cseale]

Cool ^_^

[est31]

Hmm seems its more complicated than I thought. I think I'll let it be, its "only" a feature gate test. But I'll file an issue so that it doesn't get forgotten.

[est31]

@bors r+

[bors]

📌 Commit cf20d8e has been approved by est31