Fix setting the maximum accessed array element

Array dereferences now point to variable dereferences instead of
pointing directly to variables.  This necessitated some changes to the
way the variable is accessed when setting the maximum index array element.

diff --git a/ast_to_hir.cpp b/ast_to_hir.cpp
index 64f8ef4..7759c36 100644 (file)
--- a/ast_to_hir.cpp
+++ b/ast_to_hir.cpp
@@ -1097,7 +1097,7 @@ ast_expression::hir(exec_list *instructions,
 
       error_emitted = op[0]->type->is_error() || op[1]->type->is_error();
 
-      ir_instruction *const array = op[0];
+      ir_rvalue *const array = op[0];
 
       result = new ir_dereference_array(op[0], op[1]);
 
@@ -1181,7 +1181,13 @@ ast_expression::hir(exec_list *instructions,
         }
 
         if (array->type->is_array()) {
-           ir_variable *const v = array->as_variable();
+           /* If the array is a variable dereference, it dereferences the
+            * whole array, by definition.  Use this to get the variable.
+            *
+            * FINISHME: Should some methods for getting / setting / testing
+            * FINISHME: array access limits be added to ir_dereference?
+            */
+           ir_variable *const v = array->whole_variable_referenced();
            if ((v != NULL) && (unsigned(idx) > v->max_array_access))
               v->max_array_access = idx;
         }