Wireshark mailing list archives
Re: Is it just me? (build error in packet-q708.c)
From: Guy Harris <guy () alum mit edu>
Date: Wed, 19 May 2010 13:47:09 -0700
On May 19, 2010, at 1:21 PM, Gerasimos Dimitriadis wrote:
I think that in this case there is no need for a conversion macro, since we are not dealing with arrays but with pointers to value_string_ext. By the way, are the VALS/TFS/RVALS casts necessary for certain compilers? Because I thought that arrays automatically decay to pointers when needed
Yes, that's what the ANSI/ISO C standard says. I'm not sure why those macros exist. I have the impression that at least one purpose of the macro might be to do type checking. The "structure to help you interpret the data in a more human-readable fashion" pointer is a void *, so there's no type checking; if you say VALS(something that's not a value_string array or pointer), the compiler will warn you. "Make a const value_string[] look like a _value_string pointer" shouldn't be ncessary, as, in most contexts, a reference in C to an array of X is converted to a value of type "pointer to X", and "value_string" is a typedef for "struct _value_string". ___________________________________________________________________________ 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:
- Is it just me? (build error in packet-q708.c) Martin Mathieson (May 19)
- Re: Is it just me? (build error in packet-q708.c) Jakub Zawadzki (May 19)
- Re: Is it just me? (build error in packet-q708.c) Jaap Keuter (May 19)
- Re: Is it just me? (build error in packet-q708.c) Gerasimos Dimitriadis (May 19)
- Re: Is it just me? (build error in packet-q708.c) Guy Harris (May 19)
- Re: Is it just me? (build error in packet-q708.c) Jaap Keuter (May 19)
- Re: Is it just me? (build error in packet-q708.c) Jakub Zawadzki (May 19)