Move all alloc integration tests to a new alloctests crate

library/Cargo.lock

@@ -40,6 +40,14 @@ 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"

library/Cargo.toml

@@ -4,6 +4,7 @@ members = [
   "std",
   "sysroot",
   "coretests",
+  "alloctests",
 ]
 
 exclude = [

library/alloc/Cargo.toml

@@ -18,24 +18,6 @@ compiler_builtins = { version = "=0.1.151", features = ['rustc-dep-of-std'] }
 rand = { version = "0.9.0", default-features = false, features = ["alloc"] }
 rand_xorshift = "0.4.0"
 
-[[test]]
-name = "alloctests"
-path = "tests/lib.rs"
-
-[[test]]
-name = "vec_deque_alloc_error"
-path = "tests/vec_deque_alloc_error.rs"
-
-[[bench]]
-name = "allocbenches"
-path = "benches/lib.rs"
-test = true
-
-[[bench]]
-name = "vec_deque_append_bench"
-path = "benches/vec_deque_append.rs"
-harness = false
-
 [features]
 compiler-builtins-mem = ['compiler_builtins/mem']
 compiler-builtins-c = ["compiler_builtins/c"]

library/alloctests/Cargo.toml

@@ -0,0 +1,46 @@
+[package]
+name = "alloctests"
+version = "0.0.0"
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/rust-lang/rust.git"
+description = "Tests for the Rust Allocation Library"
+autotests = false
+autobenches = false
+edition = "2021"
+
+[lib]
+path = "lib.rs"
+test = false
+bench = false
+
+[dev-dependencies]
+rand = { version = "0.9.0", default-features = false, features = ["alloc"] }
+rand_xorshift = "0.4.0"
+
+[[test]]
+name = "alloctests"
+path = "tests/lib.rs"
+
+[[test]]
+name = "vec_deque_alloc_error"
+path = "tests/vec_deque_alloc_error.rs"
+
+[[bench]]
+name = "allocbenches"
+path = "benches/lib.rs"
+test = true
+
+[[bench]]
+name = "vec_deque_append_bench"
+path = "benches/vec_deque_append.rs"
+harness = false
+
+[lints.rust.unexpected_cfgs]
+level = "warn"
+check-cfg = [
+    'cfg(bootstrap)',
+    'cfg(no_global_oom_handling)',
+    'cfg(no_rc)',
+    'cfg(no_sync)',
+    'cfg(randomized_layouts)',
+]

library/alloctests/lib.rs

@@ -0,0 +1 @@
+// Intentionally left empty.

library/alloctests/tests/lib.rs

@@ -43,11 +43,12 @@
 #![deny(fuzzy_provenance_casts)]
 #![deny(unsafe_op_in_unsafe_fn)]
 
+extern crate alloc;
 extern crate test;
 
 use std::hash::{DefaultHasher, Hash, Hasher};
 
-mod alloc;
+mod alloc_test;
 mod arc;
 mod autotraits;
 mod borrow;

src/bootstrap/mk/Makefile.in

@@ -56,6 +56,7 @@ check-aux:
 	# Run standard library tests in Miri.
 	$(Q)$(BOOTSTRAP) miri --stage 2 \
 		library/coretests \
+		library/alloctests \
 		library/alloc \
 		$(BOOTSTRAP_ARGS) \
 		--no-doc
@@ -63,6 +64,7 @@ check-aux:
 	$(Q)MIRIFLAGS="-Zmiri-disable-isolation" \
 		$(BOOTSTRAP) miri --stage 2 \
 		library/coretests \
+		library/alloctests \
 		library/alloc \
 		$(BOOTSTRAP_ARGS) \
 		--doc

src/bootstrap/src/core/build_steps/check.rs

@@ -45,7 +45,10 @@ impl Step for Std {
     const DEFAULT: bool = true;
 
     fn should_run(run: ShouldRun<'_>) -> ShouldRun<'_> {
-        run.crate_or_deps("sysroot").crate_or_deps("coretests").path("library")
+        run.crate_or_deps("sysroot")
+            .crate_or_deps("coretests")
+            .crate_or_deps("alloctests")
+            .path("library")
     }
 
     fn make_run(run: RunConfig<'_>) {

src/bootstrap/src/core/build_steps/test.rs

@@ -2609,7 +2609,7 @@ impl Step for Crate {
     const DEFAULT: bool = true;
 
     fn should_run(run: ShouldRun<'_>) -> ShouldRun<'_> {
-        run.crate_or_deps("sysroot").crate_or_deps("coretests")
+        run.crate_or_deps("sysroot").crate_or_deps("coretests").crate_or_deps("alloctests")
     }
 
     fn make_run(run: RunConfig<'_>) {
@@ -2724,12 +2724,16 @@ impl Step for Crate {
         };
 
         let mut crates = self.crates.clone();
-        // The core crate can't directly be tested. We could silently
-        // ignore it, but adding it's own test crate is less confusing
-        // for users. We still keep core itself for doctests.
+        // The core and alloc crates can't directly be tested. We
+        // could silently ignore them, but adding their own test
+        // crates is less confusing for users. We still keep core and
+        // alloc themself for doctests
         if crates.iter().any(|crate_| crate_ == "core") {
             crates.push("coretests".to_owned());
         }
+        if crates.iter().any(|crate_| crate_ == "alloc") {
+            crates.push("alloctests".to_owned());
+        }
 
         run_cargo_test(cargo, &[], &crates, &*crate_description(&self.crates), target, builder);
     }

src/tools/tidy/src/style.rs

@@ -475,7 +475,7 @@ pub fn check(path: &Path, bad: &mut bool) {
                 && !trimmed.starts_with("//")
                 && !file.ancestors().any(|a| {
                     (a.ends_with("tests") && a.join("COMPILER_TESTS.md").exists())
-                        || a.ends_with("library/alloc/tests")
+                        || a.ends_with("library/alloctests")
                 })
                 && filename != "tests.rs"
             {