[Assorted-commits] SF.net SVN: assorted:[1223] sandbox/trunk/src/cc/htons_conversion.cc

[<yan...@us...>]

Revision: 1223
          http://assorted.svn.sourceforge.net/assorted/?rev=1223&view=rev
Author:   yangzhang
Date:     2009-02-22 22:10:27 +0000 (Sun, 22 Feb 2009)

Log Message:
-----------
added demo of htons conversion weirdness

Added Paths:
-----------
    sandbox/trunk/src/cc/htons_conversion.cc

Added: sandbox/trunk/src/cc/htons_conversion.cc
===================================================================
--- sandbox/trunk/src/cc/htons_conversion.cc	                        (rev 0)
+++ sandbox/trunk/src/cc/htons_conversion.cc	2009-02-22 22:10:27 UTC (rev 1223)
@@ -0,0 +1,13 @@
+// Demo of htons conversion weirdness.
+//
+// $ g++ conversion_weirdness.cc -O3 -Wconversion
+// conversion_weirdness.cc: In function ‘int main()’:
+// conversion_weirdness.cc:4: warning: conversion to ‘short unsigned int’ from ‘int’ may alter its value
+
+#include <arpa/inet.h>
+int main() {
+  sockaddr_in sa;
+  unsigned short x = (unsigned short) htons((unsigned short)3);
+  sa.sin_port = x;
+  return 0;
+}


This was sent by the SourceForge.net collaborative development platform, the world's largest Open Source development site.