munge the debug_lock signature before freeing it: it might help us catch use-after...

diff --git a/evthread.c b/evthread.c
index d9c54787a993611e6aabcf40f1f7b97cefc12303..a8b2534f32855a0a7432809295acd85ba9830547 100644 (file)
--- a/evthread.c
+++ b/evthread.c
@@ -156,6 +156,7 @@ debug_lock_free(void *lock_, unsigned locktype)
        }
        lock->lock = NULL;
        lock->count = -100;
+       lock->signature = 0x12300fda;
        mm_free(lock);
 }