glsl: Fix off-by-one error setting max_array_access for non-constant indexing

NOTE: This is a candidate for the stable branches.

diff --git a/src/glsl/ast_to_hir.cpp b/src/glsl/ast_to_hir.cpp
index cdb16fd..a1c76e8 100644 (file)
--- a/src/glsl/ast_to_hir.cpp
+++ b/src/glsl/ast_to_hir.cpp
@@ -1577,7 +1577,7 @@ ast_expression::hir(exec_list *instructions,
             */
            ir_variable *v = array->whole_variable_referenced();
            if (v != NULL)
-              v->max_array_access = array->type->array_size();
+              v->max_array_access = array->type->array_size() - 1;
         }
       }