bjoernager/rust
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Add new const_format_args!() macro and use it in panics.

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This commit is contained in:
Mara Bos 2021-07-09 16:45:50 +02:00
parent 76cf1b8bd0
commit b64c4f9560
9 changed files with 36 additions and 11 deletions
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4
library/std/src/panic.rs
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@ -20,7 +20,7 @@ use crate::thread::Result;
#[doc(hidden)]
#[unstable(feature = "edition_panic", issue = "none", reason = "use panic!() instead")]
#[allow_internal_unstable(libstd_sys_internals)]
#[allow_internal_unstable(libstd_sys_internals, const_format_args)]
#[cfg_attr(not(test), rustc_diagnostic_item = "std_panic_2015_macro")]
#[rustc_macro_transparency = "semitransparent"]
pub macro panic_2015 {
@ -31,7 +31,7 @@ pub macro panic_2015 {
$crate::rt::begin_panic($msg)
}),
($fmt:expr, $($arg:tt)+) => ({
$crate::rt::begin_panic_fmt(&$crate::format_args!($fmt, $($arg)+))
$crate::rt::begin_panic_fmt(&$crate::const_format_args!($fmt, $($arg)+))
}),
}