diff -urN pspsdk-2450-orig/src/libc/stdio.h pspsdk-2450/src/libc/stdio.h
--- pspsdk-2450-orig/src/libc/stdio.h	2009-01-09 03:15:32 +0900
+++ pspsdk-2450/src/libc/stdio.h	2009-10-02 09:20:54 +0900
@@ -18,6 +18,10 @@
 
 #include <pspkernel.h>
 #include <stdarg.h>
+#include <sys/types.h>
+#define STDIN_FILENO  0
+#define STDOUT_FILENO 1
+#define STDERR_FILENO 2
 
 #ifdef __cplusplus
 extern "C" {