Crash with Python bindings

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+ Tue, 12 Jan 2016 04:41:58 -0500 (EST)\r
+To: notmuch@notmuchmail.org\r
+From: Konrad Hinsen <konrad.hinsen@fastmail.net>\r
+Subject: Crash with Python bindings\r
+Message-ID: <5694CA65.8010400@fastmail.net>\r
+Date: Tue, 12 Jan 2016 10:41:57 +0100\r
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+\r
+Hi everyone,\r
+\r
+I have been writing quite a few Python scripts for notmuch before \r
+running into a strange bug. Here is a minimal script producing it:\r
+\r
+--------------------------------------------------\r
+from notmuch import Query, Database\r
+\r
+def foo(bar):\r
+     pass\r
+\r
+db = Database()\r
+q = Query(db, "*")\r
+db.close()\r
+--------------------------------------------------\r
+\r
+Running this script (Python 3.5, MacOS X) yields:\r
+\r
+[1]    22478 abort      pydev3 Temp/notmuch_test.py\r
+\r
+The crash actually happens *after* db.close(), when the Python \r
+interpreter exists, and therefore I suspect that no data is lost, but I \r
+hesitate to use scripts with that behavior in production use.\r
+\r
+The strange part is that what causes the crash is the presence of the \r
+function foo(), even though it is never called. Remove foo and the \r
+script runs fine. It is also necessary to create a Query object. The \r
+combination of a function definition (any) and the creation of a Query \r
+object yields the crash. This looks like a memory management issue, but \r
+I didn't explore it any further.\r
+\r
+Cheers,\r
+   Konrad.\r