From 2f6662e1747c3ce1bc5e2d811ceda4794a52dfa0 Mon Sep 17 00:00:00 2001
From: Wenzel Jakob <wenzel.jakob@epfl.ch>
Date: Mon, 25 Apr 2016 09:16:41 +0200
Subject: [PATCH] Python 2.7.x fixes for new gil_scoped_release

---
 include/pybind11/pybind11.h | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

diff --git a/include/pybind11/pybind11.h b/include/pybind11/pybind11.h
index d4148b071..cf7f4b7b2 100644
--- a/include/pybind11/pybind11.h
+++ b/include/pybind11/pybind11.h
@@ -1122,15 +1122,26 @@ class gil_scoped_release {
 public:
     gil_scoped_release(bool disassoc = false) : disassoc(disassoc) {
         tstate = PyEval_SaveThread();
-        if (disassoc)
-            PyThread_set_key_value(detail::get_internals().tstate, nullptr);
+        if (disassoc) {
+            int key = detail::get_internals().tstate;
+            #if PY_MAJOR_VERSION < 3
+                PyThread_delete_key_value(key);
+            #else
+                PyThread_set_key_value(key, nullptr);
+            #endif
+        }
     }
     ~gil_scoped_release() {
         if (!tstate)
             return;
         PyEval_RestoreThread(tstate);
-        if (disassoc)
-            PyThread_set_key_value(detail::get_internals().tstate, tstate);
+        if (disassoc) {
+            int key = detail::get_internals().tstate;
+            #if PY_MAJOR_VERSION < 3
+                PyThread_delete_key_value(key);
+            #endif
+            PyThread_set_key_value(key, tstate);
+        }
     }
 private:
     PyThreadState *tstate;