Missing type error on function pointers with different ABIs

[philberty]

I tried this code: https://github.com/rust-lang/rust/blob/aa3ca1994904f2e056679fce1f185db8c7ed2703/src/test/ui/issue-10764.rs

fn f(_: extern "Rust" fn()) {}
extern fn bar() {}

fn main() { f(bar) }
//~^ ERROR mismatched types

I expected to see this happen: //~^ ERROR mismatched types

Instead, this happened:

<source>:1:9: error: unknown ABI option
    1 | fn f(_: extern "Rust" fn()) {}
      |         ^~~~~~

Meta

• What version of Rust GCC were you using, git sha if possible. be27571

[CohenArthur]

This should be fixed by #2162. I'll add the testcase in a small PR and close the issue

[CohenArthur]

Note that however we still do not handle the type mismatch which is an error in itself, so I'm changing the error's title and adding it to the HIR milestone