Re: type cast error

From:
SG <s.gesemann@gmail.com>
Newsgroups:
comp.lang.c++
Date:
Sun, 1 Mar 2009 11:23:53 -0800 (PST)
Message-ID:
<ce560a38-ca85-456c-93e3-fc8d4954fc40@t7g2000yqa.googlegroups.com>
On 1 Mrz., 19:56, Andre <sieg1...@yahoo.com> wrote:

On Mar 1, 10:43 am, Andre <sieg1...@yahoo.com> wrote:

[...] Does anyone know how can I fix it? [...]


Network.cpp:112: error: invalid conversion from =91int*' to =91socklen_=

t*'

Network.cpp:112: error: initializing argument 6 of =91ssize_t recvfro=

m

(int, void*, size_t, int, sockaddr*, socklen_t*)'

regarding the following line of code, and not "socklen_t
sourceAddressLength = sizeof(struct sockaddr_in);" as I said before.

      * messageToReceiveLength = recvfrom(localSocketFd,
                                    =

      messageToReceive,

                                    =

      * messageToReceiveLength,

                                    =

      0,

                                    =

      (struct sockaddr *)

&sourceAddress,
                                    =

      static_cast<socklen_t *>

(&sourceAddressLength));


Try to avoid "casting" altogether. I doubt that your case there's a
need for casting. Obviously socklen_t is neither an int nor an
unsigned int. Otherwise it would compile. Why don't you simply use a
variable of type socklen_t instead of int for sourceAddressLength?
The use of "(struct sockaddr *)" is especially dangerous in terms of
type safety.

Cheers!
SG

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