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| -rw-r--r-- | library/alloc/src/alloc.rs | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/library/alloc/src/alloc.rs b/library/alloc/src/alloc.rs index 0a4f88dedbb..3427c83a18f 100644 --- a/library/alloc/src/alloc.rs +++ b/library/alloc/src/alloc.rs @@ -23,6 +23,8 @@ extern "Rust" { // (the code expanding that attribute macro generates those functions), or to call // the default implementations in libstd (`__rdl_alloc` etc. in `library/std/src/alloc.rs`) // otherwise. + // The rustc fork of LLVM also special-cases these function names to be able to optimize them + // like `malloc`, `realloc`, and `free`, respectively. #[rustc_allocator] #[rustc_allocator_nounwind] fn __rust_alloc(size: usize, align: usize) -> *mut u8; |