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Convert a
span_bug
to a span_delayed_bug
.
PR rust-lang#121208 converted this from a `span_delayed_bug` to a `span_bug` because nothing in the test suite caused execution to hit this path. But now fuzzing has found a test case that does hit it. So this commit converts it back to `span_delayed_bug` and adds the relevant test. Fixes rust-lang#126385.
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11 changes: 11 additions & 0 deletions
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tests/ui/borrowck/issue-126385-unmatched-arg-and-hir-arg.rs
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pub struct MyStruct<'field> { | ||
field: &'field [u32], | ||
} | ||
|
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impl MyStruct<'_> { | ||
pub fn f(field: &[u32]) -> Self<u32> { //~ ERROR type arguments are not allowed on self type | ||
Self { field } //~ ERROR lifetime may not live long enough | ||
} | ||
} | ||
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fn main() {} |
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34
tests/ui/borrowck/issue-126385-unmatched-arg-and-hir-arg.stderr
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error[E0109]: type arguments are not allowed on self type | ||
--> $DIR/issue-126385-unmatched-arg-and-hir-arg.rs:6:37 | ||
| | ||
LL | pub fn f(field: &[u32]) -> Self<u32> { | ||
| ---- ^^^ type argument not allowed | ||
| | | ||
| not allowed on self type | ||
| | ||
note: `Self` is of type `MyStruct<'_>` | ||
--> $DIR/issue-126385-unmatched-arg-and-hir-arg.rs:1:12 | ||
| | ||
LL | pub struct MyStruct<'field> { | ||
| ^^^^^^^^ `Self` corresponds to this type | ||
... | ||
LL | impl MyStruct<'_> { | ||
| ----------------- `Self` is on type `MyStruct` in this `impl` | ||
help: the `Self` type doesn't accept type parameters, use the concrete type's name `MyStruct` instead if you want to specify its type parameters | ||
| | ||
LL | pub fn f(field: &[u32]) -> MyStruct<u32> { | ||
| ~~~~~~~~ | ||
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error: lifetime may not live long enough | ||
--> $DIR/issue-126385-unmatched-arg-and-hir-arg.rs:7:9 | ||
| | ||
LL | pub fn f(field: &[u32]) -> Self<u32> { | ||
| - --------- return type is MyStruct<'2> | ||
| | | ||
| let's call the lifetime of this reference `'1` | ||
LL | Self { field } | ||
| ^^^^^^^^^^^^^^ associated function was supposed to return data with lifetime `'2` but it is returning data with lifetime `'1` | ||
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error: aborting due to 2 previous errors | ||
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For more information about this error, try `rustc --explain E0109`. |