Insertng a call function

[drizzle drizzle]

Hi 

      I am inserting a call stmt  in linear_transform_loops. Al though
the call statement gets inserted  , the compilation breaks. Can some
one help me identify if I am missing some information  in the call
node that I create  (thanks Daniel  for all the help until now)



here is the set of statements I have used


                     tree id = get_identifier ("foo");
                     tree t = build_function_type_list 
(void_type_node,NULL_TREE);
                     tree decl = build_decl (FUNCTION_DECL, id, t);
                     tree call = build_function_call_expr (decl, NULL);
                     bsi_insert_before(&bsi,call,BSI_NEW_STMT);


...Here are the tree dumps of the statement which gets inserted 

dump of debug_tree()

<call_expr 0x401d1478
    type <void_type 0x40165460 void VOID
        align 8 symtab 0 alias set -1
        pointer_to_this <pointer_type 0x401654d0>>
    side-effects
    arg 0 <addr_expr 0x401d2a78
        type <pointer_type 0x401d5000 type <function_type 0x40167460>
            unsigned SI
            size <integer_cst 0x40154428 constant invariant 32>
            unit size <integer_cst 0x40154150 constant invariant 4>
            align 32 symtab 0 alias set -1>
        constant invariant
        arg 0 <function_decl 0x401cdbd0 foo type <function_type 0x40167460>
            SI file main.c line 15>>>
 
#   a_matrixD.1045 = V_MAY_DEF <a_matrixD.1045>;
dump of  debug_generic_stmt(). 
foo ();

 


But this breaks with the follwoing path 

walk_dominator_tree->optimize_stmt->register_definitions_for_stmt->register_new_def
->get_phi_state (var)->var_ann (var)->assert(t)

I will really appreciate any solutions or ideas or debugging tips.
thanks