[Python-checkins] cpython: Make sure the dummy percentage calculation won't overflow.

[raymond.hettinger]

https://hg.python.org/cpython/rev/9ac2169463b7
changeset:   96799:9ac2169463b7
user:        Raymond Hettinger <python at rcn.com>
date:        Sat Jul 04 11:28:35 2015 -0700
summary:
  Make sure the dummy percentage calculation won't overflow.

files:
  Objects/setobject.c |  4 ++--
  1 files changed, 2 insertions(+), 2 deletions(-)


diff --git a/Objects/setobject.c b/Objects/setobject.c
--- a/Objects/setobject.c
+++ b/Objects/setobject.c
@@ -1506,8 +1506,8 @@
         if (PyErr_Occurred())
             return -1;
     }
-    /* If more than 1/5 are dummies, then resize them away. */
-    if ((so->fill - so->used) * 5 < so->mask)
+    /* If more than 1/4th are dummies, then resize them away. */
+    if ((size_t)(so->fill - so->used) <= (size_t)so->mask / 4)
         return 0;
     return set_table_resize(so, so->used);
 }

-- 
Repository URL: https://hg.python.org/cpython