rewrite no-intermediate-extras

Author: Oneirical

src/tools/tidy/src/allowed_run_make_makefiles.txt

@@ -179,7 +179,6 @@ 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 +1,21 @@
+// 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};
+
+fn main() {
+    rustc().crate_type("rlib").arg("--test").input("foo.rs").run(); 
+    match fs::remove_file(tmp_dir().join("foo.bc")) {
+        Ok(_) => {
+            println!("An unwanted .bc file was created by run-make/no-intermediate-extras.");
+            std::process::exit(0);
+        },
+        Err(e) => {
+            std::process::exit(1);
+        }
+    }
+}