rewrite allocator-shim-circular-deps to ui test

Author: Oneirical

src/tools/tidy/src/allowed_run_make_makefiles.txt

@@ -1,4 +1,3 @@
-run-make/allocator-shim-circular-deps/Makefile
 run-make/archive-duplicate-names/Makefile
 run-make/atomic-lock-free/Makefile
 run-make/branch-protection-check-IBT/Makefile

src/tools/tidy/src/ui_tests.rs

@@ -15,7 +15,7 @@ use std::path::{Path, PathBuf};
 const ENTRY_LIMIT: u32 = 900;
 // FIXME: The following limits should be reduced eventually.
 
-const ISSUES_ENTRY_LIMIT: u32 = 1672;
+const ISSUES_ENTRY_LIMIT: u32 = 1673;
 
 const EXPECTED_TEST_FILE_EXTENSIONS: &[&str] = &[
     "rs",     // test source files

tests/run-make/allocator-shim-circular-deps/Makefile

@@ -0,0 +1,20 @@
+// This test is designed to intentionally introduce a circular dependency scenario to check
+// that a specific compiler bug doesn't make a resurgence.
+// The bug in question arose when at least one crate
+// required a global allocator, and that crate was placed after
+// the one defining it in the linker order.
+// The generated symbols.o should not result in any linker errors.
+// See https://github.com/rust-lang/rust/issues/112715
+
+//@ ignore-cross-compile
+//@ check-pass
+//@ compile-flags: --test
+//@ aux-build: my_lib.rs
+
+#[crate_type = "bin"]
+
+extern crate my_lib;
+
+fn main() {
+    my_lib::do_something();
+}