Make negative function_id value impossible in test suites
diff --git a/tests/suites/main_test.function b/tests/suites/main_test.function
index 5d15f2b..c73ab1a 100644
--- a/tests/suites/main_test.function
+++ b/tests/suites/main_test.function
@@ -177,7 +177,7 @@
* DISPATCH_TEST_FN_NOT_FOUND if not found
* DISPATCH_UNSUPPORTED_SUITE if not compile time enabled.
*/
-int dispatch_test( int func_idx, void ** params )
+int dispatch_test( size_t func_idx, void ** params )
{
int ret = DISPATCH_TEST_SUCCESS;
TestWrapper_t fp = NULL;
@@ -208,7 +208,7 @@
* DISPATCH_TEST_FN_NOT_FOUND if not found
* DISPATCH_UNSUPPORTED_SUITE if not compile time enabled.
*/
-int check_test( int func_idx )
+int check_test( size_t func_idx )
{
int ret = DISPATCH_TEST_SUCCESS;
TestWrapper_t fp = NULL;