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An intrinsic was declared without being a function.
Erroneous code example:
```compile_fail,E0622
#![feature(intrinsics)]
extern "rust-intrinsic" {
pub static breakpoint: fn(); // error: intrinsic must be a function
}
fn main() { unsafe { breakpoint(); } }
```
An intrinsic is a function available for use in a given programming language
whose implementation is handled specially by the compiler. In order to fix this
error, just declare a function. Example:
```no_run
#![feature(intrinsics)]
extern "rust-intrinsic" {
pub fn breakpoint(); // ok!
}
fn main() { unsafe { breakpoint(); } }
```
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