[Bug libstdc++/122062] piecewise_linear_distribution(InputIteratorB, InputIteratorB, InputIteratorW) invokes comma operator

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122062

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2025-09-25
            Version|15.0                        |15.2.0

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
--- a/libstdc++-v3/include/bits/random.tcc
+++ b/libstdc++-v3/include/bits/random.tcc
@@ -83,7 +83,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       __normalize(_InputIterator __first, _InputIterator __last,
                  _OutputIterator __result, const _Tp& __factor)
       {
-       for (; __first != __last; ++__first, ++__result)
+       for (; __first != __last; ++__first, (void) ++__result)
          *__result = *__first / __factor;
        return __result;
       }
@@ -3197,7 +3197,7 @@ namespace __detail
                 _InputIteratorW __wbegin)
       : _M_int(), _M_den(), _M_cp(), _M_m()
       {
-       for (; __bbegin != __bend; ++__bbegin, ++__wbegin)
+       for (; __bbegin != __bend; ++__bbegin, (void) ++__wbegin)
          {
            _M_int.push_back(*__bbegin);
            _M_den.push_back(*__wbegin);