changeset:   102066:193f50babfa4
branch:      3.5
parent:      102064:41f99ee19804
user:        Victor Stinner <victor.stinner@gmail.com>
date:        Thu Jun 16 23:53:47 2016 +0200
files:       Python/random.c
description:
py_getrandom(): use long type for the syscall() result

Issue #27278. It should fix a conversion warning.

In practice, the Linux kernel doesn't return more than 32 MB per call to the
getrandom() syscall.


diff -r 41f99ee19804 -r 193f50babfa4 Python/random.c
--- a/Python/random.c	Thu Jun 16 22:08:46 2016 +0300
+++ b/Python/random.c	Thu Jun 16 23:53:47 2016 +0200
@@ -132,7 +132,7 @@
      * see https://bugs.python.org/issue26839. To avoid this, use the
      * GRND_NONBLOCK flag. */
     const int flags = GRND_NONBLOCK;
-    int n;
+    long n;
 
     if (!getrandom_works)
         return 0;
@@ -143,7 +143,7 @@
            to 1024 bytes */
         n = Py_MIN(size, 1024);
 #else
-        n = Py_MIN(size, INT_MAX);
+        n = Py_MIN(size, LONG_MAX);
 #endif
 
         errno = 0;