1 files changed, 4 insertions, 1 deletions
diff --git a/dln.c b/dln.c
index beef2f74a5..3a02dbf996 100644
--- a/dln.c
+++ b/dln.c
@@ -1211,10 +1211,12 @@ dln_load(file)
 {
 #ifdef _WIN32
     HINSTANCE handle;
-    char winfile[255];
+    char winfile[MAXPATHLEN];
     void (*init_fct)();
     char buf[MAXPATHLEN];
 
+    if (strlen(file) >= MAXPATHLEN) rb_loaderror("filename too long");
+
     /* Load the file as an object one */
     init_funcname(buf, file);
 
@@ -1421,6 +1423,7 @@ dln_load(file)
 
       if (err_stat != B_NO_ERROR) {
 	char real_name[MAXPATHLEN];
+
 	strcpy(real_name, buf);
 	strcat(real_name, "__Fv");
         err_stat = get_image_symbol(img_id, real_name,