Fwd: Re: [Help-gnutls] Problem building from git

Nikos Mavrogiannopoulos nmav at gnutls.org
Tue Jul 14 23:12:01 CEST 2009

Brad Hards wrote:
> On Tuesday 14 July 2009 03:38:18 Nikos Mavrogiannopoulos wrote:
>>  I have solved the warnings except the transport_ptr cast. Most of them
>> a bit different (I don't know how widely used i z for size_t, so I just
>> casted size_t to int for printing).
> Thanks.
> I did some checking - looks like 'z' is in glibc, based on the SuSv3. I think 
> that might come from C99 - I don't have a copy to check. Not sure if it is 
> supported in C89. Which compilers / C libraries are supported for gnutls?

Actually it is C99 which is what gnutls is supposed to support. It could
have been z as well.

>> The former warning for cast is not
>> easy to solve and not really needed on current platforms. Anyway I see
>> Simon has added gl_fd_to_handle() that could be used with an inline
>> function to perform this cast gracefully... but I don't really know if
>> it is the proper place.
> I also saw that it was identified as an issue some time ago.
> http://www.mail-archive.com/help-gnutls@gnu.org/msg00286.html
> Do you have any suggestions other than turning off -Werror?

We would need something like:

static inline void* int2ptr(int fd) {
	void* ret;

	memcpy(ret, &fd, sizeof(fd));
	return ret;

static inline int ptr2int(void* ptr) {
	int fd;

	memcpy(&fd, ptr, sizeof(fd));
	return fd;

However this interferes with the win32 emulation API, thus it might be
better to have some suggestions from simon as well.


> Brad

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