rust/compiler/rustc_codegen_gcc/tests/run/closure.rs

// Compiler:
//
// Run-time:
//   status: 0
//   stdout: Arg: 1
//     Argument: 1
//     String arg: 1
//     Int argument: 2
//     Both args: 11

#![feature(no_core)]
#![no_std]
#![no_core]
#![no_main]

extern crate mini_core;
use mini_core::*;

#[no_mangle]
extern "C" fn main(argc: isize, _argv: *const *const u8) -> i32 {
    let string = "Arg: %d\n\0";
    let mut closure = || unsafe {
        libc::printf(string as *const str as *const i8, argc);
    };
    closure();

    let mut closure = || unsafe {
        libc::printf("Argument: %d\n\0" as *const str as *const i8, argc);
    };
    closure();

    let mut closure = |string| unsafe {
        libc::printf(string as *const str as *const i8, argc);
    };
    closure("String arg: %d\n\0");

    let mut closure = |arg: isize| unsafe {
        libc::printf("Int argument: %d\n\0" as *const str as *const i8, arg);
    };
    closure(argc + 1);

    let mut closure = |string, arg: isize| unsafe {
        libc::printf(string as *const str as *const i8, arg);
    };
    closure("Both args: %d\n\0", argc + 10);

    0
}