[Bug c++/44916] Incorrect function overloading with static_cast

[james dot dennett at gmail dot com]

------- Comment #1 from james dot dennett at gmail dot com  2010-07-18 21:37 -------
Thanks to Ian for reporting this for me (my buganizer account wasn't well at
the time).

This appears to duplicate bug 39415.

I have a hacky fix for this, adding a conversion to the correct target type
after the conversion used by the current code, included here for reference:

$ svn diff gcc/cp/typeck.c
Index: gcc/cp/typeck.c
===================================================================
--- gcc/cp/typeck.c     (revision 157950)
+++ gcc/cp/typeck.c     (working copy)
@@ -5743,7 +5743,14 @@
      base = lookup_base (TREE_TYPE (type), TREE_TYPE (intype),
                         c_cast_p ? ba_unique : ba_check,
                         NULL);
-      return build_base_path (MINUS_EXPR, expr, base, /*nonnull=*/false);
+      return build_static_cast_1 (type,
+                                  build_base_path (MINUS_EXPR,
+                                                   expr,
+                                                   base,
+                                                   /*nonnull=*/false),
+                                  c_cast_p,
+                                  valid_p,
+                                  complain);
    }

  if ((TYPE_PTRMEM_P (type) && TYPE_PTRMEM_P (intype))


-- 

james dot dennett at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |james dot dennett at gmail
                   |                            |dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44916