Add ui test for early exiting if no main

diff --git a/tests/run-pass/no_main.rs b/tests/run-pass/no_main.rs
new file mode 100644 (file)
index 0000000..1ae9a6a
--- /dev/null
+++ b/tests/run-pass/no_main.rs
@@ -0,0 +1 @@
+#![no_main]

diff --git a/tests/run-pass/no_main.stderr b/tests/run-pass/no_main.stderr
new file mode 100644 (file)
index 0000000..52591a8
--- /dev/null
+++ b/tests/run-pass/no_main.stderr
@@ -0,0 +1,2 @@
+error: miri can only run programs that have a main function
+