diff options
Diffstat (limited to 'library/std/src/sys/unix/weak.rs')
| -rw-r--r-- | library/std/src/sys/unix/weak.rs | 46 | 
1 files changed, 1 insertions, 45 deletions
| diff --git a/library/std/src/sys/unix/weak.rs b/library/std/src/sys/unix/weak.rs index f5a4ce929b2..f92d6052cc6 100644 --- a/library/std/src/sys/unix/weak.rs +++ b/library/std/src/sys/unix/weak.rs @@ -29,7 +29,7 @@ use crate::ptr; use crate::sync::atomic::{self, AtomicPtr, Ordering}; // We can use true weak linkage on ELF targets. -#[cfg(all(not(any(target_os = "macos", target_os = "ios")), not(bootstrap)))] +#[cfg(not(any(target_os = "macos", target_os = "ios")))] pub(crate) macro weak { (fn $name:ident($($t:ty),*) -> $ret:ty) => ( let ref $name: ExternWeak<unsafe extern "C" fn($($t),*) -> $ret> = { @@ -43,30 +43,14 @@ pub(crate) macro weak { ) } -#[cfg(all(not(any(target_os = "macos", target_os = "ios")), bootstrap))] -pub(crate) macro weak { - (fn $name:ident($($t:ty),*) -> $ret:ty) => ( - let ref $name: ExternWeak<unsafe extern "C" fn($($t),*) -> $ret> = { - extern "C" { - #[linkage = "extern_weak"] - static $name: *const libc::c_void; - } - #[allow(unused_unsafe)] - ExternWeak::new(unsafe { $name }) - }; - ) -} - // On non-ELF targets, use the dlsym approximation of weak linkage. #[cfg(any(target_os = "macos", target_os = "ios"))] pub(crate) use self::dlsym as weak; -#[cfg(not(bootstrap))] pub(crate) struct ExternWeak<F: Copy> { weak_ptr: Option<F>, } -#[cfg(not(bootstrap))] impl<F: Copy> ExternWeak<F> { #[inline] pub(crate) fn new(weak_ptr: Option<F>) -> Self { @@ -79,34 +63,6 @@ impl<F: Copy> ExternWeak<F> { } } -#[cfg(bootstrap)] -pub(crate) struct ExternWeak<F> { - weak_ptr: *const libc::c_void, - _marker: PhantomData<F>, -} - -#[cfg(bootstrap)] -impl<F> ExternWeak<F> { - #[inline] - pub(crate) fn new(weak_ptr: *const libc::c_void) -> Self { - ExternWeak { weak_ptr, _marker: PhantomData } - } -} - -#[cfg(bootstrap)] -impl<F> ExternWeak<F> { - #[inline] - pub(crate) fn get(&self) -> Option<F> { - unsafe { - if self.weak_ptr.is_null() { - None - } else { - Some(mem::transmute_copy::<*const libc::c_void, F>(&self.weak_ptr)) - } - } - } -} - pub(crate) macro dlsym { (fn $name:ident($($t:ty),*) -> $ret:ty) => ( dlsym!(fn $name($($t),*) -> $ret, stringify!($name)); | 
