Make libstd depend on the hashbrown crate

3 files changed, 24 insertions, 0 deletions

diff --git a/src/libstd/Cargo.toml b/src/libstd/Cargo.toml
index 86ad334d886..83aee507f32 100644
--- a/src/libstd/Cargo.toml
+++ b/src/libstd/Cargo.toml
@@ -22,6 +22,7 @@ libc = { version = "0.2.51", default-features = false, features = ['rustc-dep-of
 compiler_builtins = { version = "0.1.9" }
 profiler_builtins = { path = "../libprofiler_builtins", optional = true }
 unwind = { path = "../libunwind" }
+hashbrown = { version = "0.2.0", features = ['rustc-dep-of-std'] }
 rustc-demangle = { version = "0.1.10", features = ['rustc-dep-of-std'] }
 backtrace-sys = { version = "0.1.24", features = ["rustc-dep-of-std"], optional = true }
 
diff --git a/src/tools/rustc-std-workspace-alloc/Cargo.toml b/src/tools/rustc-std-workspace-alloc/Cargo.toml
new file mode 100644
index 00000000000..98578914963
--- /dev/null
+++ b/src/tools/rustc-std-workspace-alloc/Cargo.toml
@@ -0,0 +1,14 @@
+[package]
+name = "rustc-std-workspace-alloc"
+version = "1.0.0"
+authors = ["Alex Crichton <alex@alexcrichton.com>"]
+license = 'MIT/Apache-2.0'
+description = """
+Hack for the compiler's own build system
+"""
+
+[lib]
+path = "lib.rs"
+
+[dependencies]
+alloc = { path = "../../liballoc" }
diff --git a/src/tools/rustc-std-workspace-alloc/lib.rs b/src/tools/rustc-std-workspace-alloc/lib.rs
new file mode 100644
index 00000000000..50294e6cbad
--- /dev/null
+++ b/src/tools/rustc-std-workspace-alloc/lib.rs
@@ -0,0 +1,9 @@
+#![feature(no_core, alloc)]
+#![no_core]
+
+// See rustc-std-workspace-core for why this crate is needed.
+
+// Rename the crate to avoid conflicting with the alloc module in liballoc.
+extern crate alloc as foo;
+
+pub use foo::*;