Ok - so overlaying a struct to a copy of the TVB is not the way to go. So my problem is then extracting all of the struct members in order to determine their offsets in the struct on the build system.
By using the address of the struct and that of the struct member, the offset can be found. Anyone have a utility to extract all of the struct members from a struct definition? Thanks as always. Alex Lindberg --- On Thu, 7/28/11, Bill Meier <[email protected]> wrote: From: Bill Meier <[email protected]> Subject: Re: [Wireshark-dev] Structure sizes change between Linux and Windows help To: "Developer support list for Wireshark" <[email protected]> Date: Thursday, July 28, 2011, 4:39 PM 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 <[email protected]> Archives: http://www.wireshark.org/lists/wireshark-dev Unsubscribe: https://wireshark.org/mailman/options/wireshark-dev mailto:[email protected]?subject=unsubscribe
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