Fix alloc.

Author: m-ou-se

alloc_miri_test/Cargo.toml

@@ -1,5 +1,5 @@
 [package]
-name = "alloc_miri_test"
+name = "alloc"
 version = "0.0.0"
 autotests = false
 autobenches = false
@@ -10,9 +10,9 @@ rand = { version = "0.8.5", default-features = false, features = ["alloc"] }
 rand_xorshift = "0.3.0"
 
 [[test]]
-name = "alloc"
+name = "alloc-lib"
 path = "../library/alloc/src/lib.rs"
 
 [[test]]
-name = "alloctests"
+name = "alloc-tests"
 path = "../library/alloc/tests/lib.rs"

alloc_miri_test/src/lib.rs

@@ -0,0 +1,4 @@
+#![feature(no_core, rustc_private)]
+#![no_core]
+extern crate alloc as realalloc;
+pub use realalloc::*;

fake/alloc/Cargo.toml

@@ -17,7 +17,7 @@ path = "../library/std/src/lib.rs"
 # just a bunch of fake crates that reeexport sysroot crates, so that std's imports work out
 # (this works because we only build std as a test; the regular crate build is
 # completely empty thanks to the `miri-test-libstd` feature below)
-alloc = { path = "../fake/alloc" }
+alloc = { path = "../alloc_miri_test" }
 cfg-if = { path = "../fake/cfg-if" }
 libc = { path = "../fake/libc" }
 hashbrown = { path = "../fake/hashbrown" }