Jonas Schievink 87387fd23e
Rollup merge of #77284 - josephlr:mem, r=Mark-Simulacrum
library: Forward compiler-builtins "mem" feature

This fixes https://github.com/rust-lang/wg-cargo-std-aware/issues/53

Now users will be able to do:
```
cargo build -Zbuild-std=core -Zbuild-std-features=compiler-builtins-mem
```
and correctly get the Rust implemenations for `memcpy` and friends.

Signed-off-by: Joe Richey <joerichey@google.com>
2020-09-30 20:56:10 +02:00
..