diff -aur dillo-0.8.5/src/cookies.c dillo-0.8.5FIX/src/cookies.c
--- dillo-0.8.5/src/cookies.c	2007-04-13 23:51:49.000000000 -0700
+++ dillo-0.8.5FIX/src/cookies.c	2007-04-13 23:47:11.000000000 -0700
@@ -115,7 +115,8 @@
    }
 
    /* set close on exec */
-   fcntl(fileno(F_in), F_SETFD, FD_CLOEXEC | fcntl(fileno(F_in), F_GETFD));
+   if (F_in)
+      fcntl(fileno(F_in), F_SETFD, FD_CLOEXEC | fcntl(fileno(F_in), F_GETFD));
 
    return F_in;
 }