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Auto merge of #32990 - tbu-:pr_more_defaults_cstr_path, r=alexcrichton 

Add `Default` implementation for `&CStr`, `CString`, `Path`
This commit is contained in:
bors 2016-05-05 13:18:57 -07:00
parent 413bafdabf 5efe083ddc
commit 77987ba898
1 changed files with 16 additions and 0 deletions
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16
src/libstd/ffi/c_str.rs
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@ -326,6 +326,22 @@ impl fmt::Debug for CStr {
}
}
#[stable(feature = "cstr_default", since = "1.10.0")]
impl<'a> Default for &'a CStr {
fn default() -> &'a CStr {
static SLICE: &'static [c_char] = &[0];
unsafe { CStr::from_ptr(SLICE.as_ptr()) }
}
}
#[stable(feature = "cstr_default", since = "1.10.0")]
impl Default for CString {
fn default() -> CString {
let a: &CStr = Default::default();
a.to_owned()
}
}
#[stable(feature = "cstr_borrow", since = "1.3.0")]
impl Borrow<CStr> for CString {
fn borrow(&self) -> &CStr { self }