co3 0.4.0

Build C API from Rust
Documentation 
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error[E0283]: type annotations needed
 --> tests/ui_fail/generic_drop.rs:6:8
  |
6 | struct ZDropRegression<T>(core::marker::PhantomData<T>);
  |        ^^^^^^^^^^^^^^^^^^ cannot infer type
  |
note: multiple `impl`s satisfying `ZDropRegression<T>: <ZDropRegression<T> as _::AssertNoDrop>::assert_no_drop::CustomDropIsNotSupported<_>` found
 --> tests/ui_fail/generic_drop.rs:4:20
  |
4 | #[derive(RustSpec, ReprC)]
  |                    ^^^^^
  = note: this error originates in the derive macro `ReprC` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0283]: type annotations needed
  --> tests/ui_fail/generic_drop.rs:14:8
   |
14 | struct ZCopyDropRegression<T: Copy>(T);
   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot infer type
   |
note: multiple `impl`s satisfying `ZCopyDropRegression<T>: <ZCopyDropRegression<T> as _::AssertNoDrop>::assert_no_drop::CustomDropIsNotSupported<_>` found
  --> tests/ui_fail/generic_drop.rs:12:20
   |
12 | #[derive(RustSpec, ReprC)]
   |                    ^^^^^
   = note: this error originates in the derive macro `ReprC` (in Nightly builds, run with -Z macro-backtrace for more info)