From 4676eec2a1486cda95c26050b9e01caf702d86f9 Mon Sep 17 00:00:00 2001
From: Stefan Behnel <stefan_ml@behnel.de>
Date: Sat, 10 Aug 2013 10:26:31 +0200
Subject: [PATCH] print a proper exception traceback when parallel cythonizing
 crashes

---
 Cython/Build/Dependencies.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/Cython/Build/Dependencies.py b/Cython/Build/Dependencies.py
index b7c521c..ff62edb 100644
--- a/Cython/Build/Dependencies.py
+++ b/Cython/Build/Dependencies.py
@@ -840,7 +840,12 @@ def cythonize_one(pyx_file, c_file, fingerprint, quiet, options=None, raise_on_f
             f.close()
 
 def cythonize_one_helper(m):
-    return cythonize_one(*m[1:])
+    import traceback
+    try:
+        return cythonize_one(*m[1:])
+    except Exception:
+        traceback.print_exc()
+        raise
 
 def cleanup_cache(cache, target_size, ratio=.85):
     try:
-- 
2.7.4