Fixup windows-binary-no-external-deps

tests/run-make/windows-binary-no-external-deps/rmake.rs

@@ -1,15 +1,21 @@
+//! Ensure that we aren't relying on any non-system DLLs when running
+//! a "hello world" application by setting `PATH` to `C:\Windows\System32`.
 //@ only-windows
 
-// Ensure that we aren't relying on any non-system DLLs when compiling and running
-// a "hello world" application by setting `PATH` to `C:\Windows\System32`.
-
-use run_make_support::{run, rustc};
+use run_make_support::{rustc, tmp_dir};
 use std::env;
 use std::path::PathBuf;
+use std::process::Command;
 
 fn main() {
+    rustc().input("hello.rs").run();
+
     let windows_dir = env::var("SystemRoot").unwrap();
     let system32: PathBuf = [&windows_dir, "System32"].iter().collect();
-    rustc().input("hello.rs").env("PATH", system32).run();
-    run("hello");
+    // Note: This does not use the support wrappers so that we can precisely control the PATH
+    let exe = tmp_dir().join("hello.exe");
+    let status = Command::new(exe).env("PATH", &system32).spawn().unwrap().wait().unwrap();
+    if !status.success() {
+        panic!("Command failed!\noutput status: `{status}`");
+    }
 }