Rollup merge of rust-lang#136642 - bjorn3:separate_alloctest_crate, r=cuviper

Put the alloc unit tests in a separate alloctests package

Same rationale as rust-lang#135937. This PR has some extra complexity though as a decent amount of tests are testing internal implementation details rather than the public api. As such I opted to include the modules containing the types under test using `#[path]` into the alloctests package. This means that those modules still need `#[cfg(test)]`, but the rest of liballoc no longer need it.

Author: compiler-errors

compiler/rustc_codegen_cranelift/patches/0029-stdlib-Disable-f16-and-f128-in-compiler-builtins.patch

@@ -12,15 +12,15 @@ index 7165c3e48af..968552ad435 100644
 --- a/library/alloc/Cargo.toml
 +++ b/library/alloc/Cargo.toml
 @@ -11,7 +11,7 @@ test = { path = "../test" }
- edition = "2021"
+ bench = false
 
  [dependencies]
  core = { path = "../core", public = true }
 -compiler_builtins = { version = "=0.1.151", features = ['rustc-dep-of-std'] }
 +compiler_builtins = { version = "=0.1.151", features = ['rustc-dep-of-std', 'no-f16-f128'] }
 
- [dev-dependencies]
- rand = { version = "0.8.5", default-features = false, features = ["alloc"] }
+ [features]
+ compiler-builtins-mem = ['compiler_builtins/mem']
 -- 
 2.34.1
 

library/Cargo.lock

@@ -30,8 +30,6 @@ version = "0.0.0"
 dependencies = [
  "compiler_builtins",
  "core",
- "rand",
- "rand_xorshift",
 ]
 
 [[package]]
@@ -40,6 +38,14 @@ version = "0.2.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "683d7910e743518b0e34f1186f92494becacb047c7b6bf616c96772180fef923"
 
+[[package]]
+name = "alloctests"
+version = "0.0.0"
+dependencies = [
+ "rand",
+ "rand_xorshift",
+]
+
 [[package]]
 name = "cc"
 version = "1.2.0"