Prevent opening of empty filename ""

diff --git a/ext/com_dotnet/com_extension.c b/ext/com_dotnet/com_extension.c
index 3c73ec594e0e6f17d8e7be8b154d33006601b391..56526805ac871dd6a7a69e917055014397d0e441 100644 (file)
--- a/ext/com_dotnet/com_extension.c
+++ b/ext/com_dotnet/com_extension.c
@@ -115,7 +115,7 @@ static PHP_INI_MH(OnTypeLibFileUpdate)
        char *strtok_buf = NULL;
        int cached;
 
-       if (!new_value || (typelib_file = VCWD_FOPEN(new_value, "r"))==NULL) {
+       if (!new_value || !new_value[0] || (typelib_file = VCWD_FOPEN(new_value, "r"))==NULL) {
                return FAILURE;
        }