Ensure that a failing compilation results in a nonzero return code.

1 files changed, 3 insertions, 1 deletions

diff --git a/tests/runner.py b/tests/runner.py
index 0baf79dc..4a8cfe2f 100755
--- a/tests/runner.py
+++ b/tests/runner.py
@@ -7331,9 +7331,11 @@ Options that are modified or new in %s include:
         # properly report source code errors, and stop there
         self.clear()
         assert not os.path.exists('a.out.js')
-        output = Popen(['python', compiler, path_from_root('tests', 'hello_world_error' + suffix)], stdout=PIPE, stderr=PIPE).communicate()
+        process = Popen(['python', compiler, path_from_root('tests', 'hello_world_error' + suffix)], stdout=PIPE, stderr=PIPE)
+        output = process.communicate()
         assert not os.path.exists('a.out.js'), 'compilation failed, so no output file is expected'
         assert len(output[0]) == 0, output[0]
+        assert process.returncode is not 0, 'Failed compilation must return a nonzero error code!'
         self.assertNotContained('IOError', output[1]) # no python stack
         self.assertNotContained('Traceback', output[1]) # no python stack
         self.assertContained('error: invalid preprocessing directive', output[1])