ITS#8505 Protect parent from fork()-pthread_exit()

diff --git a/libraries/liblmdb/mdb.c b/libraries/liblmdb/mdb.c
index 36094bf4f3b042a5d6006bd5b5498b782c36ae60..e2f1bbca1d23c19cf81b2db36a36f86402f2c6ab 100644 (file)
--- a/libraries/liblmdb/mdb.c
+++ b/libraries/liblmdb/mdb.c
@@ -4429,7 +4429,11 @@ mdb_env_reader_dest(void *ptr)
 {
        MDB_reader *reader = ptr;
 
-       reader->mr_pid = 0;
+#ifndef _WIN32
+       if (reader->mr_pid == getpid()) /* catch pthread_exit() in child process */
+#endif
+               /* We omit the mutex, so do this atomically (i.e. skip mr_txnid) */
+               reader->mr_pid = 0;
 }
 
 #ifdef _WIN32