1 files changed, 52 insertions, 0 deletions
diff --git a/tests/ui/runtime/running-with-no-runtime.rs b/tests/ui/runtime/running-with-no-runtime.rs
new file mode 100644
index 00000000000..c575a6bec8e
--- /dev/null
+++ b/tests/ui/runtime/running-with-no-runtime.rs
@@ -0,0 +1,52 @@
+// run-pass
+// ignore-emscripten spawning processes is not supported
+// ignore-sgx no processes
+// revisions: mir thir
+// [thir]compile-flags: -Zthir-unsafeck
+
+#![feature(start)]
+
+use std::ffi::CStr;
+use std::process::{Command, Output};
+use std::panic;
+use std::str;
+
+#[start]
+fn start(argc: isize, argv: *const *const u8) -> isize {
+    if argc > 1 {
+        unsafe {
+            match **argv.offset(1) as char {
+                '1' => {}
+                '2' => println!("foo"),
+                '3' => assert!(panic::catch_unwind(|| {}).is_ok()),
+                '4' => assert!(panic::catch_unwind(|| panic!()).is_err()),
+                '5' => assert!(Command::new("test").spawn().is_err()),
+                _ => panic!()
+            }
+        }
+        return 0
+    }
+
+    let args = unsafe {
+        (0..argc as usize).map(|i| {
+            let ptr = *argv.add(i) as *const _;
+            CStr::from_ptr(ptr).to_bytes().to_vec()
+        }).collect::<Vec<_>>()
+    };
+    let me = String::from_utf8(args[0].to_vec()).unwrap();
+
+    pass(Command::new(&me).arg("1").output().unwrap());
+    pass(Command::new(&me).arg("2").output().unwrap());
+    pass(Command::new(&me).arg("3").output().unwrap());
+    pass(Command::new(&me).arg("4").output().unwrap());
+    pass(Command::new(&me).arg("5").output().unwrap());
+
+    0
+}
+
+fn pass(output: Output) {
+    if !output.status.success() {
+        println!("{:?}", str::from_utf8(&output.stdout));
+        println!("{:?}", str::from_utf8(&output.stderr));
+    }
+}