Patch: Avoid embedded bootstrapping race in recent python2.7 (Closes: #889813)

debian/changelog

@@ -7,6 +7,8 @@ python-cffi (1.11.4-1) UNRELEASED; urgency=medium
   * Bump Standards-Version to 4.1.3, no changes needed.
   * Declare Rules-Requires-Root: no
   * Bump debhelper compat to 11.
+  * Patch: Avoid embedded bootstrapping race in recent python2.7
+    (Closes: #889813)
 
   [ Ondřej Nový ]
   * d/control: Set Vcs-* to salsa.debian.org

debian/patches/avoid-2.7-bootstrap-race

+From: Stefano Rivera <stefanor@debian.org>
+Date: Tue, 20 Feb 2018 07:54:32 -0800
+Subject: Bootstrap embedded interpreter with py3k logic
+
+2.7 recently started releasing the GIL during Py_InitializeEx, which
+allowed races in the embedded bootstrapping. Hold a lock while
+initializing, to avoid this.
+
+Bug-Debian: https://bugs.debian.org/889813
+Bug-Upstream: https://bitbucket.org/cffi/cffi/issues/358/segfaults-in-testing-embedding
+---
+ cffi/_embedding.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/cffi/_embedding.h b/cffi/_embedding.h
+index 2b744df..4d30dd7 100644
+--- a/cffi/_embedding.h
++++ b/cffi/_embedding.h
+@@ -332,7 +332,7 @@ static int _cffi_carefully_make_gil(void)
+     }
+ #endif
+ 
+-#if PY_MAJOR_VERSION >= 3
++#if 1
+     /* Python 3: call Py_InitializeEx() */
+     {
+         PyGILState_STATE state = PyGILState_UNLOCKED;

debian/patches/series

+avoid-2.7-bootstrap-race