[Python-checkins] cpython (3.5): Issue #25221: Fix corrupted result from PyLong_FromLong(0) when Python is

[mark.dickinson]

https://hg.python.org/cpython/rev/9eb0f7762999
changeset:   103578:9eb0f7762999
branch:      3.5
parent:      103576:dbfcb3b9c3c1
user:        Mark Dickinson <dickinsm at gmail.com>
date:        Sat Sep 10 20:17:36 2016 +0100
summary:
  Issue #25221: Fix corrupted result from PyLong_FromLong(0) when Python is compiled with NSMALLPOSINTS = 0.

files:
  Misc/NEWS            |  3 +++
  Objects/longobject.c |  3 ++-
  2 files changed, 5 insertions(+), 1 deletions(-)


diff --git a/Misc/NEWS b/Misc/NEWS
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -10,6 +10,9 @@
 Core and Builtins
 -----------------
 
+- Issue #25221: Fix corrupted result from PyLong_FromLong(0) when
+  Python is compiled with NSMALLPOSINTS = 0.
+
 - Issue #25758: Prevents zipimport from unnecessarily encoding a filename
   (patch by Eryk Sun)
 
diff --git a/Objects/longobject.c b/Objects/longobject.c
--- a/Objects/longobject.c
+++ b/Objects/longobject.c
@@ -234,7 +234,7 @@
     unsigned long abs_ival;
     unsigned long t;  /* unsigned so >> doesn't propagate sign bit */
     int ndigits = 0;
-    int sign = 1;
+    int sign;
 
     CHECK_SMALL_INT(ival);
 
@@ -246,6 +246,7 @@
     }
     else {
         abs_ival = (unsigned long)ival;
+        sign = ival == 0 ? 0 : 1;
     }
 
     /* Fast path for single-digit ints */

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