Wireshark mailing list archives
Re: Structure sizes change between Linux and Windows help
From: Bill Meier <wmeier () newsguy com>
Date: Thu, 28 Jul 2011 17:39:00 -0400
On 7/28/2011 5:27 PM, Alex Lindberg wrote:
I am creating a dissector that overlays a complicated struct (bit fields, unions, etc) on the the tvb.
Unfortunately, you can't do that; :) From doc/README.developer Don't use structures that overlay packet data, or into which you copy packet data; the C programming language does not guarantee any particular alignment of fields within a structure, and even the extensions that try to guarantee that are compiler-specific and not necessarily supported by all compilers used to build Wireshark. Using bitfields in those structures is even worse; the order of bitfields is not guaranteed. ___________________________________________________________________________ Sent via: Wireshark-dev mailing list <wireshark-dev () wireshark org> Archives: http://www.wireshark.org/lists/wireshark-dev Unsubscribe: https://wireshark.org/mailman/options/wireshark-dev mailto:wireshark-dev-request () wireshark org?subject=unsubscribe
Current thread:
- Structure sizes change between Linux and Windows help Alex Lindberg (Jul 28)
- Re: Structure sizes change between Linux and Windows help Bill Meier (Jul 28)
- Re: Structure sizes change between Linux and Windows help Bill Meier (Jul 28)
- Re: Structure sizes change between Linux and Windows help Alex Lindberg (Jul 29)
- Re: Structure sizes change between Linux and Windowshelp news.gmane.com (Jul 29)
- Re: Structure sizes change between Linux and Windowshelp Jaap Keuter (Jul 29)
- Re: Structure sizes change between Linux and Windows help Bill Meier (Jul 28)