X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fioctl.c;h=7c09d95b49c8aa313b67fca486bfe68ba7713565;hb=95d83dbbfafaabc980a74102f4b3d9ec9b950dd3;hp=91eb3be1b9c613ab2cbbd1a126e4edb226ab5eeb;hpb=1a56eb400a72d56a160d6d3f1c3a7577b7019cb0;p=gnulib.git

diff --git a/lib/ioctl.c b/lib/ioctl.c
index 91eb3be1b..7c09d95b4 100644
--- a/lib/ioctl.c
+++ b/lib/ioctl.c
@@ -1,6 +1,6 @@
 /* ioctl.c --- wrappers for Windows ioctl function
 
-   Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.
+   Copyright (C) 2008-2011 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -37,7 +37,9 @@ rpl_ioctl (int fd, int request, ... /* {void *,char *} arg */)
   buf = va_arg (args, void *);
   va_end (args);
 
-  return ioctl (fd, request, buf);
+  /* Cast 'request' so that when the system's ioctl function takes a 64-bit
+     request argument, the value gets zero-extended, not sign-extended.  */
+  return ioctl (fd, (unsigned int) request, buf);
 }
 
 #else /* mingw */