diff --git a/libcxx/utils/run.py b/libcxx/utils/run.py
--- a/libcxx/utils/run.py
+++ b/libcxx/utils/run.py
@@ -16,10 +16,10 @@
 import argparse
 import os
 import platform
+import signal
 import subprocess
 import sys
 
-
 def main():
     parser = argparse.ArgumentParser()
     parser.add_argument('--execdir', type=str, required=True)
@@ -54,8 +54,10 @@
             env['TEMP'] = os.environ.get('TEMP')
 
     # Run the command line with the given environment in the execution directory.
-    return subprocess.call(commandLine, cwd=args.execdir, env=env, shell=False)
-
+    exitCode = subprocess.call(commandLine, cwd=args.execdir, env=env, shell=False)
+    if exitCode == -signal.SIGINT:
+        raise KeyboardInterrupt
+    return exitCode
 
 if __name__ == '__main__':
     exit(main())