Harden cache clear

Erlend E. Aasland · Erlend E. Aasland · commit b080ff768ab4 · 2021-05-24T09:07:51.000+02:00
diff --git a/Modules/_sqlite/cache.c b/Modules/_sqlite/cache.c
@@ -124,6 +124,7 @@ cache_clear(pysqlite_Cache *self)
 {
     /* iterate over all nodes and deallocate them */
     pysqlite_Node *node = self->first;
+    self->first = NULL;
     while (node) {
         pysqlite_Node *delete_node = node;
         node = node->next;

Original file line number	Diff line number	Diff line change
`@@ -124,6 +124,7 @@ cache_clear(pysqlite_Cache *self)`
`124`	`124`	`{`
`125`	`125`	`/* iterate over all nodes and deallocate them */`
`126`	`126`	`pysqlite_Node *node = self->first;`
	`127`	`+ self->first = NULL;`
`127`	`128`	`while (node) {`
`128`	`129`	`pysqlite_Node *delete_node = node;`
`129`	`130`	`node = node->next;`