gistfile1.txt

diff --git a/fann.c b/fann.c
index 9cb3171..531ad19 100644
--- a/fann.c
+++ b/fann.c
@@ -933,7 +933,9 @@ ZEND_GET_MODULE(fann)

 /* macro for chencking fann_error structs */
 #define PHP_FANN_ERROR_CHECK(__fann_struct)                                                            \
-       if (fann_get_errno((struct fann_error *) __fann_struct) != 0) {         \
+       if (NULL == __fann_struct) {            \
+               RETURN_FALSE;                                                                                                   \
+       } else if (fann_get_errno((struct fann_error *) __fann_struct) != 0) {          \
                php_error_docref(NULL TSRMLS_CC, E_WARNING, __fann_struct->errstr); \
                RETURN_FALSE;                                                                                                   \
        }