+ // See docs in https://github.com/rust-lang/rust/blob/master/compiler/rustc/src/main.rs
+ // about jemalloc-sys
+ #[cfg(feature = "jemalloc")]
+ {
+ use std::os::raw::{c_int, c_void};
+
+ #[used]
+ static _F1: unsafe extern "C" fn(usize, usize) -> *mut c_void = jemalloc_sys::calloc;
+ #[used]
+ static _F2: unsafe extern "C" fn(*mut *mut c_void, usize, usize) -> c_int =
+ jemalloc_sys::posix_memalign;
+ #[used]
+ static _F3: unsafe extern "C" fn(usize, usize) -> *mut c_void = jemalloc_sys::aligned_alloc;
+ #[used]
+ static _F4: unsafe extern "C" fn(usize) -> *mut c_void = jemalloc_sys::malloc;
+ #[used]
+ static _F5: unsafe extern "C" fn(*mut c_void, usize) -> *mut c_void = jemalloc_sys::realloc;
+ #[used]
+ static _F6: unsafe extern "C" fn(*mut c_void) = jemalloc_sys::free;
+
+ // On OSX, jemalloc doesn't directly override malloc/free, but instead
+ // registers itself with the allocator's zone APIs in a ctor. However,
+ // the linker doesn't seem to consider ctors as "used" when statically
+ // linking, so we need to explicitly depend on the function.
+ #[cfg(target_os = "macos")]
+ {
+ extern "C" {
+ fn _rjem_je_zone_register();
+ }
+
+ #[used]
+ static _F7: unsafe extern "C" fn() = _rjem_je_zone_register;
+ }
+ }
+