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adcda6ca9a
Use a visitor to collect *all* items (including those nested) that were stripped behind a `cfg` condition.
```
error[E0425]: cannot find function `f` in this scope
--> $DIR/nested-cfg-attrs.rs:4:13
|
LL | fn main() { f() }
| ^ not found in this scope
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note: found an item that was configured out
--> $DIR/nested-cfg-attrs.rs:2:4
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LL | fn f() {}
| ^
note: the item is gated here
--> $DIR/nested-cfg-attrs.rs:1:35
|
LL | #[cfg_attr(all(), cfg_attr(all(), cfg(FALSE)))]
| ^^^^^^^^^^
```
65 lines
2.2 KiB
Rust
65 lines
2.2 KiB
Rust
#![allow(unexpected_cfgs)] // since we want to recognize them as unexpected
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pub mod inner {
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#[cfg(false)] //~ NOTE the item is gated here
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pub fn uwu() {}
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//~^ NOTE found an item that was configured out
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#[cfg(false)] //~ NOTE the item is gated here
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//~^ NOTE the item is gated here
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//~| NOTE the item is gated here
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pub mod doesnt_exist {
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//~^ NOTE found an item that was configured out
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//~| NOTE found an item that was configured out
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//~| NOTE found an item that was configured out
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pub fn hello() {}
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pub mod hi {}
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}
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pub mod wrong {
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#[cfg(feature = "suggesting me fails the test!!")]
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pub fn meow() {}
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}
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pub mod right {
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#[cfg(feature = "what-a-cool-feature")] //~ NOTE the item is gated behind the `what-a-cool-feature` feature
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pub fn meow() {}
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//~^ NOTE found an item that was configured out
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}
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}
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mod placeholder {
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use super::inner::doesnt_exist;
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//~^ ERROR unresolved import `super::inner::doesnt_exist`
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//~| NOTE no `doesnt_exist` in `inner`
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use super::inner::doesnt_exist::hi;
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//~^ ERROR unresolved import `super::inner::doesnt_exist`
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//~| NOTE could not find `doesnt_exist` in `inner`
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}
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#[cfg(i_dont_exist_and_you_can_do_nothing_about_it)] //~ NOTE the item is gated here
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pub fn vanished() {} //~ NOTE found an item that was configured out
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fn main() {
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// There is no uwu at this path - no diagnostic.
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uwu(); //~ ERROR cannot find function
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//~^ NOTE not found in this scope
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// It does exist here - diagnostic.
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inner::uwu(); //~ ERROR cannot find function
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//~| NOTE not found in `inner`
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// The module isn't found - we get a diagnostic.
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inner::doesnt_exist::hello(); //~ ERROR failed to resolve
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//~| NOTE could not find `doesnt_exist` in `inner`
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// It should find the one in the right module, not the wrong one.
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inner::right::meow(); //~ ERROR cannot find function
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//~| NOTE not found in `inner::right
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// Exists in the crate root - we show a diagnostic because we treat "no module DefId" as "crate
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// root DefId".
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vanished(); //~ ERROR cannot find function
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//~^ NOTE not found in this scope
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}
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