Merge pull request #2245 from wiredtiger/wt-2162-index-recreate

WT-2162.  Add null pointer check, needed after an index is dropped.

src/schema/schema_open.c

@@ -571,7 +571,7 @@ __wt_schema_get_index(WT_SESSION_IMPL *session,
 	/* Try to find the index in the table. */
 	for (i = 0; i < table->nindices; i++) {
 		idx = table->indices[i];
-		if (strcmp(idx->name, uri) == 0) {
+		if (idx != NULL && strcmp(idx->name, uri) == 0) {
 			if (tablep != NULL)
 				*tablep = table;
 			else

test/suite/test_bug015.py

@@ -0,0 +1,48 @@
+#!/usr/bin/env python
+#
+# Public Domain 2014-2015 MongoDB, Inc.
+# Public Domain 2008-2014 WiredTiger, Inc.
+#
+# This is free and unencumbered software released into the public domain.
+#
+# Anyone is free to copy, modify, publish, use, compile, sell, or
+# distribute this software, either in source code form or as a compiled
+# binary, for any purpose, commercial or non-commercial, and by any
+# means.
+#
+# In jurisdictions that recognize copyright laws, the author or authors
+# of this software dedicate any and all copyright interest in the
+# software to the public domain. We make this dedication for the benefit
+# of the public at large and to the detriment of our heirs and
+# successors. We intend this dedication to be an overt act of
+# relinquishment in perpetuity of all present and future rights to this
+# software under copyright law.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+
+import wiredtiger, wttest
+from helper import copy_wiredtiger_home, key_populate, simple_populate
+
+# test_bug015.py
+#    JIRA WT-2162: index drop in a certain order triggers NULL pointer deref
+class test_bug015(wttest.WiredTigerTestCase):
+    def test_bug015(self):
+        table = 'table:test_bug015'
+        idx1 = 'index:test_bug015:aab'
+        idx2 = 'index:test_bug015:aaa'
+        self.session.create(table, "columns=(k,v)")
+        self.session.create(idx1, "columns=(v)")
+        self.session.create(idx2, "columns=(v)")
+        self.session.drop(idx1, "force=true")
+        self.session.create(idx1, "columns=(v)")
+        self.session.drop(idx2, "force=true")
+        self.session.create(idx2, "columns=(v)")
+
+if __name__ == '__main__':
+    wttest.run()