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libary: 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>
This commit is contained in:
Joe Richey 2020-09-27 20:31:06 -07:00
parent c0b15cc6ed
commit 37f795697c
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2 changed files with 2 additions and 0 deletions
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1
library/std/Cargo.toml
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@ -59,6 +59,7 @@ gimli-symbolize = []
panic-unwind = ["panic_unwind"]
profiler = ["profiler_builtins"]
compiler-builtins-c = ["alloc/compiler-builtins-c"]
compiler-builtins-mem = ["alloc/compiler-builtins-mem"]
llvm-libunwind = ["unwind/llvm-libunwind"]
# Make panics and failed asserts immediately abort without formatting any message

1
library/test/Cargo.toml
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@ -25,6 +25,7 @@ proc_macro = { path = "../proc_macro" }
default = ["std_detect_file_io", "std_detect_dlsym_getauxval", "panic-unwind"]
backtrace = ["std/backtrace"]
compiler-builtins-c = ["std/compiler-builtins-c"]
compiler-builtins-mem = ["std/compiler-builtins-mem"]
llvm-libunwind = ["std/llvm-libunwind"]
panic-unwind = ["std/panic_unwind"]
panic_immediate_abort = ["std/panic_immediate_abort"]