rewrite pdb-alt-path to rmake

Author: Oneirical

src/tools/tidy/src/allowed_run_make_makefiles.txt

@@ -131,7 +131,6 @@ run-make/pass-linker-flags-flavor/Makefile
 run-make/pass-linker-flags-from-dep/Makefile
 run-make/pass-linker-flags/Makefile
 run-make/pass-non-c-like-enum-to-c/Makefile
-run-make/pdb-alt-path/Makefile
 run-make/pdb-buildinfo-cl-cmd/Makefile
 run-make/pgo-gen-lto/Makefile
 run-make/pgo-gen-no-imp-symbols/Makefile

tests/run-make/pdb-alt-path/Makefile

@@ -0,0 +1,37 @@
+// The information inside a .exe file contains a string of the PDB file name.
+// This could be a security concern if the full path was exposed, as it could
+// reveal information about the filesystem where the bin was first compiled.
+// This should only be overridden by `-Clink-arg=/PDBALTPATH:...` - this test
+// checks that no full file paths are exposed and that the override flag is respected.
+// See https://github.com/rust-lang/rust/pull/121297
+
+//@ only-windows-msvc
+
+fn main() {
+    // Test that we don't have the full path to the PDB file in the binary
+    rustc()
+        .input("main.rs")
+        .arg("-g")
+        .crate_name("my_crate_name")
+        .crate_type("bin")
+        .arg("-Cforce-frame-pointers")
+        .run();
+    invalid_utf8_contains(bin_name("my_crate_name"), "my_crate_name.pdb");
+    invalid_utf8_not_contains(bin_name("my_crate_name"), r#"\my_crate_name.pdb"#);
+    // Test that backtraces still can find debuginfo by checking that they contain symbol names and
+    // source locations.
+    let out = run(bin_name(my_crate_name));
+    out.assert_stdout_contains("my_crate_name::fn_in_backtrace");
+    out.assert_stdout_contains("main.rs:15");
+    // Test that explicitly passed `-Clink-arg=/PDBALTPATH:...` is respected
+    rustc()
+        .input("main.rs")
+        .arg("-g")
+        .crate_name("my_crate_name")
+        .crate_type("bin")
+        .link_arg("/PDBALTPATH:abcdefg.pdb")
+        .arg("-Cforce-frame-pointers")
+        .run();
+    invalid_utf8_contains(bin_name("my_crate_name"), "abcdefg.pdb");
+    invalid_utf8_not_contains(bin_name("my_crate_name"), "my_crate_name.pdb");
+}