I'm seeing a problem with ioctl and FIONREAD, I use the following code to check if there are any bytes in the input buffer of a comport. ie:
unsigned int SerialIO::getBufferSize()
{int bufferedBytes = 0;
ioctl(IOPortHandle, FIONREAD, &bufferedBytes);
if (bufferedBytes == -1)
{ bufferedBytes = 0;
/* log an error */}
return (unsigned int)bufferedBytes;
};
the problem is that even when there is data in the buffer bufferedBytes has a value of zero.
Searching the net I've found an unresolved gcc bug report on the same problem issued 2 months ago: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12722
I'm wondering 1. If any cygwin users have encountered such a problem? 2. If they have, were they able to find a solution etc..
Any help would be very much appreciated
Regards
Arash
PS: I ran the same code on solaris and openbsd, seems to work fine...
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