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ffi::c_str smaller as_bytes

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This commit is contained in:
klensy 2021-03-28 19:55:09 +03:00
parent 84542d22a7
commit a0ff4612f2
1 changed files with 4 additions and 2 deletions
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6
library/std/src/ffi/c_str.rs
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@ -613,7 +613,8 @@ impl CString {
#[inline]
#[stable(feature = "rust1", since = "1.0.0")]
pub fn as_bytes(&self) -> &[u8] {
&self.inner[..self.inner.len() - 1]
// SAFETY: CString has a length at least 1
unsafe { self.inner.get_unchecked(..self.inner.len() - 1) }
}
/// Equivalent to [`CString::as_bytes()`] except that the
@ -1322,7 +1323,8 @@ impl CStr {
#[stable(feature = "rust1", since = "1.0.0")]
pub fn to_bytes(&self) -> &[u8] {
let bytes = self.to_bytes_with_nul();
&bytes[..bytes.len() - 1]
// SAFETY: to_bytes_with_nul returns slice with length at least 1
unsafe { bytes.get_unchecked(..bytes.len() - 1) }
}
/// Converts this C string to a byte slice containing the trailing 0 byte.