2 files changed, 7 insertions, 1 deletions
diff --git a/progs/slang/cltest.c b/progs/slang/cltest.c
index 2753f59f85..dfff6cb226 100644
--- a/progs/slang/cltest.c
+++ b/progs/slang/cltest.c
@@ -237,7 +237,7 @@ void RenderScene (void)
       if (p != NULL)
          p++;
    }
-   if (*p != '\0')
+   if (p && *p != '\0')
       printf ("*** %s\n", "I/O error");
 
    nextprogram = program->next;
diff --git a/progs/slang/vstest.c b/progs/slang/vstest.c
index 472ea9b62e..33c6f09dc5 100644
--- a/progs/slang/vstest.c
+++ b/progs/slang/vstest.c
@@ -220,6 +220,12 @@ static void load_test_file (const char *filename)
 
    fseek (f, 0, SEEK_END);
    size = ftell (f);
+
+   if (size == -1) {
+      fclose (f);
+      return;
+   }
+
    fseek (f, 0, SEEK_SET);
 
    code = (char *) (malloc (size));