Foreign function blocks dropped

[ayazhafiz]

Describe the bug

rustfmt drops block associated with a foreign function

To Reproduce

Formatting

extern "C" {
    fn f() {
        fn g() {}
    }
}

gives

extern "C" {
    fn f();
}

Context: rust-lang/rust#74204

Expected behavior

The formatting makes the code semantically correct, but causes a loss of information. I think rustfmt should preserve the block, if it has access to it.

Meta

• rustfmt version: 37ec56d
• From where did you install rustfmt?: from source
• How do you run rustfmt: binary from source