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Rollup merge of #64060 - petrochenkov:unstdhyg, r=tmandry

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Improve hygiene of `alloc::format!`

`format` now uses `format_args` though a `__export` module, as described in https://github.com/rust-lang/rust/issues/63687#issuecomment-526254208.

Fixes https://github.com/rust-lang/rust/issues/63687
This commit is contained in:
Mazdak Farrokhzad 2019-09-11 02:38:03 +02:00 committed by GitHub
commit e757d33e73
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2 changed files with 7 additions and 1 deletions
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6
src/liballoc/lib.rs
View File

@ -171,3 +171,9 @@ pub mod vec;
mod std {
pub use core::ops; // RangeFull
}
#[doc(hidden)]
#[unstable(feature = "liballoc_internals", issue = "0", reason = "implementation detail")]
pub mod __export {
pub use core::format_args;
}

2
src/liballoc/macros.rs
View File

@ -98,5 +98,5 @@ macro_rules! vec {
#[macro_export]
#[stable(feature = "rust1", since = "1.0.0")]
macro_rules! format {
($($arg:tt)*) => ($crate::fmt::format(::core::format_args!($($arg)*)))
($($arg:tt)*) => ($crate::fmt::format($crate::__export::format_args!($($arg)*)))
}