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Rollup merge of #111043 - jmillikin:cstr-is-empty, r=dtolnay

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Stabilize feature `cstr_is_empty`

Fixes #102444

ACP: https://github.com/rust-lang/libs-team/issues/106
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Dylan DPC 2023-05-17 11:13:56 +05:30 committed by GitHub
parent 2a5c4baf68 5a0419352c
commit 5b58471c4c
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1 changed files with 2 additions and 3 deletions
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5
library/core/src/ffi/c_str.rs
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@ -517,8 +517,6 @@ pub const fn as_ptr(&self) -> *const c_char {
/// # Examples
///
/// ```
/// #![feature(cstr_is_empty)]
///
/// use std::ffi::CStr;
/// # use std::ffi::FromBytesWithNulError;
///
@ -533,7 +531,8 @@ pub const fn as_ptr(&self) -> *const c_char {
/// # }
/// ```
#[inline]
#[unstable(feature = "cstr_is_empty", issue = "102444")]
#[stable(feature = "cstr_is_empty", since = "CURRENT_RUSTC_VERSION")]
#[rustc_const_stable(feature = "cstr_is_empty", since = "CURRENT_RUSTC_VERSION")]
pub const fn is_empty(&self) -> bool {
// SAFETY: We know there is at least one byte; for empty strings it
// is the NUL terminator.