34 lines
753 B
Rust
34 lines
753 B
Rust
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#![feature(lang_items, no_core)]
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#![no_std]
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#![no_core]
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#![crate_type = "lib"]
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#[inline(never)]
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#[no_mangle]
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pub unsafe fn foo(dest: *mut u8, src: *const u8) {
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// should call `@llvm.memcpy`.
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memcpy(dest, src, 1024);
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}
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#[no_mangle]
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#[inline(never)]
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pub unsafe extern "C" fn memcpy(dest: *mut u8, src: *const u8, _n: usize) -> *mut u8 {
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*dest = 0;
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return src as *mut u8;
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}
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#[lang = "sized"]
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trait Sized {}
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#[lang = "copy"]
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trait Copy {}
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impl Copy for *mut u8 {}
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impl Copy for *const u8 {}
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#[lang = "drop_in_place"]
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#[allow(unconditional_recursion)]
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pub unsafe fn drop_in_place<T: ?Sized>(to_drop: *mut T) {
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// Code here does not matter - this is replaced by the
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// real drop glue by the compiler.
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drop_in_place(to_drop);
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}
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