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Add ui test of type_id mismatch

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This commit is contained in:
David Tolnay 2020-05-07 17:46:40 -07:00
parent 5f9e8ca1a0
commit 9f07303af1
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2 changed files with 29 additions and 0 deletions
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15
tests/ui/wrong_type_id.rs Normal file
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@ -0,0 +1,15 @@
#[cxx::bridge(namespace = folly)]
mod here {
extern "C" {
type StringPiece;
}
}
#[cxx::bridge(namespace = folly)]
mod there {
extern "C" {
type ByteRange = crate::here::StringPiece;
}
}
fn main() {}

14
tests/ui/wrong_type_id.stderr Normal file
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@ -0,0 +1,14 @@
error[E0271]: type mismatch resolving `<here::StringPiece as cxx::extern_type::ExternType>::Id == (cxx::type_id::f, cxx::type_id::o, cxx::type_id::l, cxx::type_id::l, cxx::type_id::y, (), cxx::type_id::B, cxx::type_id::y, cxx::type_id::t, cxx::type_id::e, cxx::type_id::R, cxx::type_id::a, cxx::type_id::n, cxx::type_id::g, cxx::type_id::e)`
--> $DIR/wrong_type_id.rs:8:1
|
8 | #[cxx::bridge(namespace = folly)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected a tuple with 15 elements, found one with 17 elements
|
::: $WORKSPACE/src/extern_type.rs:6:41
|
6 | pub fn verify_extern_type<T: ExternType<Id = Id>, Id>() {}
| ------- required by this bound in `cxx::extern_type::verify_extern_type`
|
= note: expected tuple `(cxx::type_id::f, cxx::type_id::o, cxx::type_id::l, cxx::type_id::l, cxx::type_id::y, (), cxx::type_id::B, cxx::type_id::y, cxx::type_id::t, cxx::type_id::e, cxx::type_id::R, cxx::type_id::a, cxx::type_id::n, cxx::type_id::g, cxx::type_id::e)`
found tuple `(cxx::type_id::f, cxx::type_id::o, cxx::type_id::l, cxx::type_id::l, cxx::type_id::y, (), cxx::type_id::S, cxx::type_id::t, cxx::type_id::r, cxx::type_id::i, cxx::type_id::n, cxx::type_id::g, cxx::type_id::P, cxx::type_id::i, cxx::type_id::e, cxx::type_id::c, cxx::type_id::e)`
= note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)