[Bug c++/113834] [14 Regression] internal compiler error: in tree_to_shwi, at tree.cc:6461

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113834

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mpolacek at gcc dot gnu.org

--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
To fix the ICE we could do:

--- a/gcc/cp/semantics.cc
+++ b/gcc/cp/semantics.cc
@@ -4644,7 +4644,9 @@ static tree
 finish_type_pack_element (tree idx, tree types, tsubst_flags_t complain)
 {
   idx = maybe_constant_value (idx);
-  if (TREE_CODE (idx) != INTEGER_CST || !INTEGRAL_TYPE_P (TREE_TYPE (idx)))
+  if (TREE_CODE (idx) != INTEGER_CST
+      || !INTEGRAL_TYPE_P (TREE_TYPE (idx))
+      || !tree_fits_shwi_p (idx))
     {
       if (complain & tf_error)
    error ("%<__type_pack_element%> index is not an integral constant");