Code change:
= note: `impl Trait` is only allowed in arguments and return types of functions and methods error[E0798]: function pointers with the `"C-cmse-nonsecure-call"` ABI cannot contain generics in their type <del> --> $DIR/generics.rs:19:9 </del> <ins> --> $DIR/generics.rs:20:9 </ins> | LL |     f3: extern "C-cmse-nonsecure-call" fn(T, u32, u32, u32) -> u64, |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error[E0798]: function pointers with the `"C-cmse-nonsecure-call"` ABI cannot contain generics in their type <del> --> $DIR/generics.rs:20:9 </del> <ins> --> $DIR/generics.rs:21:9 </ins> | LL |     f4: extern "C-cmse-nonsecure-call" fn(Wrapper<T>, u32, u32, u32) -> u64, |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ <del> error: aborting due to 5 previous errors </del> <ins> error[E0798]: return value of `"C-cmse-nonsecure-call"` function too large to pass via registers --> $DIR/generics.rs:27:73 | LL | type WithTraitObject = extern "C-cmse-nonsecure-call" fn(&dyn Trait) -> &dyn Trait; |                                                                         ^^^^^^^^^^ this type doesn't fit in the available registers | = note: functions with the `"C-cmse-nonsecure-call"` ABI must pass their result via the available return registers = note: the result must either be a (transparently wrapped) i64, u64 or f64, or be at most 4 bytes in size error[E0798]: return value of `"C-cmse-nonsecure-call"` function too large to pass via registers --> $DIR/generics.rs:31:62 | LL |     extern "C-cmse-nonsecure-call" fn(&'static dyn Trait) -> &'static dyn Trait; |                                                              ^^^^^^^^^^^^^^^^^^ this type doesn't fit in the available registers | = note: functions with the `"C-cmse-nonsecure-call"` ABI must pass their result via the available return registers = note: the result must either be a (transparently wrapped) i64, u64 or f64, or be at most 4 bytes in size error[E0798]: return value of `"C-cmse-nonsecure-call"` function too large to pass via registers --> $DIR/generics.rs:38:62 | LL |     extern "C-cmse-nonsecure-call" fn(WrapperTransparent) -> WrapperTransparent; |                                                              ^^^^^^^^^^^^^^^^^^ this type doesn't fit in the available registers | = note: functions with the `"C-cmse-nonsecure-call"` ABI must pass their result via the available return registers = note: the result must either be a (transparently wrapped) i64, u64 or f64, or be at most 4 bytes in size error[E0045]: C-variadic function must have a compatible calling convention, like `C` or `cdecl` --> $DIR/generics.rs:41:20 | LL | type WithVarArgs = extern "C-cmse-nonsecure-call" fn(u32, ...); |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ C-variadic function must have a compatible calling convention error: aborting due to 9 previous errors </ins> <del> Some errors have detailed explanations: E0412, E0562, E0798. For more information about an error, try `rustc --explain E0412`. </del> <ins> Some errors have detailed explanations: E0045, E0412, E0562, E0798. For more information about an error, try `rustc --explain E0045`. </ins>

Related discussion:
text: <!-- [31mICE[0m: Rustc '' 'thread 'rustc' panicked at ' has escaping bound vars, so it cannot be wrapped in a dummy binder.'', 'thread 'rustc' panicked at ' has escaping bound vars, so it cannot be wrapped in a dummy binder.'' File: --auto-reduced (treereduce-rust): original: Version information ` Command: <!-- Include a backtrace in the code block by setting in your environment. E.g. . --<details<summary<strongProgram output</strong</summary<p</p</details<!-- query stack: [issizedraw] computing whether is [layoutof] computing layout of -- label +F-impltraitinassoctype +F-inherentassociated_types
ah lol this regressed in cc