Check for error

1 files changed, 6 insertions, 1 deletions

diff --git a/tr8vm.c b/tr8vm.c
index 57740d9..65dc86b 100644
--- a/tr8vm.c
+++ b/tr8vm.c
@@ -214,7 +214,12 @@ int main(int argc, char *argv[])
         fprintf(stderr, "Error opening input\n");
         return 1;
     }
-    fseek(fd, 0, SEEK_END);
+    if (fseek(fd, 0, SEEK_END) == -1)
+    {
+        fclose(fd);
+        fprintf(stderr, "Error opening input\n");
+        return 1;
+    }
     size = ftell(fd);
     if (size > UINT16_MAX + 1)
     {