[Bug c++/105321] "non-constant condition" issued for function containing a short-circuited unevaluated non-constant expression

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105321

Marek Polacek <mpolacek at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|unassigned at gcc dot gnu.org      |mpolacek at gcc dot 
gnu.org
             Status|NEW                         |ASSIGNED

--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
This sort of obvious patch seems to work:

--- a/gcc/cp/constexpr.cc
+++ b/gcc/cp/constexpr.cc
@@ -7043,7 +7043,7 @@ cxx_eval_constant_expression (const constexpr_ctx *ctx,
tree t,
      {
        /* Check that the LHS is constant and then discard it.  */
        cxx_eval_constant_expression (ctx, op0,
-                     true, non_constant_p, overflow_p,
+                     lval, non_constant_p, overflow_p,
                      jump_target);
        if (*non_constant_p)
          return t;