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Streamline the format macro.

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Removing the unnecessary local variable speeds up compilation a little.
This commit is contained in:
Nicholas Nethercote 2025-04-23 15:18:16 +10:00
parent cb31a009e3
commit bc8df506f6
2 changed files with 7 additions and 10 deletions
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3
library/alloc/src/macros.rs
View File

@ -105,8 +105,7 @@ macro_rules! vec {
macro_rules! format {
($($arg:tt)*) => {
$crate::__export::must_use({
let res = $crate::fmt::format($crate::__export::format_args!($($arg)*));
res
$crate::fmt::format($crate::__export::format_args!($($arg)*))
})
}
}

14
tests/pretty/issue-4264.pp
View File

@ -31,14 +31,12 @@ fn bar() ({
((::alloc::__export::must_use as
fn(String) -> String {must_use::<String>})(({
let res =
((::alloc::fmt::format as
for<'a> fn(Arguments<'a>) -> String {format})(((format_arguments::new_const
as
fn(&[&'static str; 1]) -> Arguments<'_> {Arguments::<'_>::new_const::<1>})((&([("test"
as &str)] as [&str; 1]) as &[&str; 1])) as Arguments<'_>))
as String);
(res as String)
((::alloc::fmt::format as
for<'a> fn(Arguments<'a>) -> String {format})(((format_arguments::new_const
as
fn(&[&'static str; 1]) -> Arguments<'_> {Arguments::<'_>::new_const::<1>})((&([("test"
as &str)] as [&str; 1]) as &[&str; 1])) as Arguments<'_>))
as String)
} as String)) as String);
} as ())
type Foo = [i32; (3 as usize)];