makepad/libs/relax/compiler/tests/macro_alias.rs
Admin b22a714840 makepad run: the Rust JIT (libs/relax) and makepad-remote
The JIT that runs makepad apps from source: lexer, front end, type checker,
lazy borrow checker (Gandalf; `--check-first` opts in), codegen, session and
warm/cold caches keyed by compiler stamp, provided crates bound late,
startup images, live patching. User-facing name is `makepad run` (binary
`makepad`, MAKEPAD_RUN_* env, ~/.makepad-run); libs/relax stays the internal
library name. `makepad check` reports rustc-style diagnostics with rustc
error codes and checks a whole workspace (`--workspace`). Runs on macOS,
Linux, Windows and Android. makepad-remote: one tool schema for apps and the
WM (app/1): grabs, captures, traces, frame profiles and tweaks.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-10-13 12:26:21 +02:00

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Rust

// A macro imported under another name: `use std::{eprintln as log_error};` then
// `crate::log_error!(..)` (rustc: macros are importable items, the use's #[cfg] applies).
// wayland-backend's logging shim (libs/linux/wayland-backend/src/lib.rs:72-77) -- before:
// "macro `log_error!` is not supported" (counter on Linux/Wayland, node 165).
#[allow(unused_imports)]
use std::{eprintln as log_error, format as fmt_alias};
#[cfg(feature = "never_on")]
use std::{panic as log_error2};
#[cfg(not(feature = "never_on"))]
use std::{format as log_error2};
#[test] fn t() {
crate::log_error!("alias of eprintln {}", 1);
let s = fmt_alias!("{}-{}", 1, 2);
assert_eq!(s, "1-2");
assert_eq!(crate::log_error2!("{}", 7), "7");
}