libcore requires a few external symbols to be defined:
https://github.com/rust-lang/rust/blob/c2bc344eb23d8c1d18e803b3f1e631cf99926fbb/library/core/src/lib.rs#L23-L27
TODO: This is copied from compiler_builtins/mem.rs. Can we use that one instead? The note in the above link says
"[the symbols] can also be provided by the compiler-builtins crate". The memcpy in compiler_builtins is behind a
"mem" feature flag - can we enable that somehow?
https://github.com/rust-lang/compiler-builtins/blob/eff506cd49b637f1ab5931625a33cef7e91fbbf6/src/mem.rs#L12-L13
|