[v3] libstdc++/50510

[Paolo Carlini]

Hi,

committed to mainline and 4_6-branch.

Paolo.

///////////////////////

2011-09-24  John Salmon  <john.sal...@deshaw.com>

        PR libstdc++/50510
        * include/bits/random.tcc (seed_seq::generate): Fix computation.

Index: include/bits/random.tcc
===================================================================
--- include/bits/random.tcc     (revision 179144)
+++ include/bits/random.tcc     (working copy)
@@ -2796,8 +2796,8 @@
          _Type __r4 = __r3 - __k % __n;
          __r4 = __detail::__mod<_Type,
                   __detail::_Shift<_Type, 32>::__value>(__r4);
-         __begin[(__k + __p) % __n] ^= __r4;
-         __begin[(__k + __q) % __n] ^= __r3;
+         __begin[(__k + __p) % __n] ^= __r3;
+         __begin[(__k + __q) % __n] ^= __r4;
          __begin[__k % __n] = __r4;
        }
     }