[Bug c++/58834] [4.9 Regression] ICE on __builtin_shuffle within template function

[glisse at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58834

Marc Glisse <glisse at gcc dot gnu.org> changed:

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

--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> ---
Most likely (didn't launch gdb to check what was failing)

--- typeck.c    (revision 203915)
+++ typeck.c    (working copy)
@@ -4942,7 +4942,7 @@ build_x_vec_perm_expr (location_t loc,
 {
   if (processing_template_decl
       && (type_dependent_expression_p (arg0)
-      || type_dependent_expression_p (arg1)
+      || (arg1 && type_dependent_expression_p (arg1))
       || type_dependent_expression_p (arg2)))
     return build_min_nt_loc (loc, VEC_PERM_EXPR, arg0, arg1, arg2);
   return c_build_vec_perm_expr (loc, arg0, arg1, arg2, complain & tf_error);


or

--- pt.c    (revision 203915)
+++ pt.c    (working copy)
@@ -20510,7 +20510,7 @@ type_dependent_expression_p (tree expression)
   if (!processing_template_decl)
     return false;

-  if (expression == error_mark_node)
+  if (!expression || expression == error_mark_node)
     return false;

   /* An unresolved name is always dependent.  */