Use a unique exit status when the runtime fails normally

Check for it in run-fail tests

1 files changed, 10 insertions, 4 deletions

diff --git a/src/test/compiletest/runtest.rs b/src/test/compiletest/runtest.rs
index c98f1deba24..fdcd627811d 100644
--- a/src/test/compiletest/runtest.rs
+++ b/src/test/compiletest/runtest.rs
@@ -51,15 +51,21 @@ fn run_rfail_test(cx: &cx, props: &test_props, testfile: &str) {
 
     procres = exec_compiled_test(cx, props, testfile);
 
-    if procres.status == 0 {
-        fatal_procres("run-fail test didn't produce an error!", procres);
-    }
-
+    // The value our Makefile configures valgrind to return on failure
     const valgrind_err: int = 100;
     if procres.status == valgrind_err {
         fatal_procres("run-fail test isn't valgrind-clean!", procres);
     }
 
+    // The value the rust runtime returns on failure
+    const rust_err: int = 101;
+    if procres.status != rust_err {
+        fatal_procres(
+            #fmt("run-fail test produced the wrong error code: %d",
+                 procres.status),
+            procres);
+    }
+
     check_error_patterns(props, testfile, procres);
 }