Unrolled build for rust-lang#125218

Rollup merge of rust-lang#125218 - Oneirical:easy-test-the-third, r=jieyouxu

Migrate `run-make/no-intermediate-extras` to new `rmake.rs`

Part of rust-lang#121876 and the associated [Google Summer of Code project](https://blog.rust-lang.org/2024/05/01/gsoc-2024-selected-projects.html).

Author: rust-timer

src/tools/tidy/src/allowed_run_make_makefiles.txt

@@ -177,7 +177,6 @@ run-make/no-alloc-shim/Makefile
 run-make/no-builtins-attribute/Makefile
 run-make/no-builtins-lto/Makefile
 run-make/no-duplicate-libs/Makefile
-run-make/no-intermediate-extras/Makefile
 run-make/obey-crate-type-flag/Makefile
 run-make/optimization-remarks-dir-pgo/Makefile
 run-make/optimization-remarks-dir/Makefile

tests/run-make/no-intermediate-extras/Makefile

@@ -0,0 +1,17 @@
+// When using the --test flag with an rlib, this used to generate
+// an unwanted .bc file, which should not exist. This test checks
+// that the bug causing the generation of this file has not returned.
+// See https://github.com/rust-lang/rust/issues/10973
+
+//@ ignore-cross-compile
+
+use run_make_support::{rustc, tmp_dir};
+use std::fs;
+
+fn main() {
+    rustc().crate_type("rlib").arg("--test").input("foo.rs").run();
+    assert!(
+        fs::remove_file(tmp_dir().join("foo.bc")).is_err(),
+        "An unwanted .bc file was created by run-make/no-intermediate-extras."
+    );
+}