rust/tests/ui/format-no-std.rs

32 lines
713 B
Rust

//@ run-pass
//@ ignore-emscripten no no_std executables
//@ ignore-wasm different `main` convention
#![feature(lang_items)]
#![no_std]
#![no_main]
// Import global allocator and panic handler.
extern crate std as other;
#[macro_use] extern crate alloc;
use alloc::string::ToString;
#[no_mangle]
extern "C" fn main(_argc: core::ffi::c_int, _argv: *const *const u8) -> core::ffi::c_int {
let s = format!("{}", 1_isize);
assert_eq!(s, "1".to_string());
let s = format!("test");
assert_eq!(s, "test".to_string());
let s = format!("{test}", test=3_isize);
assert_eq!(s, "3".to_string());
let s = format!("hello {}", "world");
assert_eq!(s, "hello world".to_string());
0
}