Mail Archives: cygwin/2000/01/10/18:18:08
On Mon, 10 Jan 2000, Mumit Khan wrote:
> On Mon, 10 Jan 2000, Jamie Guinan wrote:
>
> > Ah! Got it working now. When I first tried your suggestion I
> > mistakenly used
> >
> > static const char mode_str[128] = "9600,N,8,1";
> > ^^^^^
> >
> > instead of
> >
> > static char mode_str[128] = "9600,N,8,1";
>
> Yup, the 'const' pretty much kills the reason for making it a writable
> buffer ;-)
>
> Glad it worked. Feel free to send a bug report to the OS vendor. I bet
> it's going to be fixes as soon as MSVC starts supporting putting const
> strings in readonly memory (or perhaps that's *why* MSVC doesn't do it
> yet).
I did some searching on microsoft.com, and it looks like MSVC 6 did
in fact start putting const stuff in read-only memory,
http://support.microsoft.com/support/kb/articles/Q201/3/72.ASP
But the popular reference for Win32 serial programming where I
first found BuildCommDCB is from 1995, pre-MSVC 6,
http://msdn.microsoft.com/library/techart/msdn_serial.htm
I emailed them about this potential source of confusion, but I'm
not holding my breath. :)
-Jamie
================================================================
Jamie Guinan Blue Button Solutions, Inc.
guinan AT bluebutton DOT com http://www.bluebutton.com
================================================================
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