RE: [ECOS] Error in io\serial\current\src\common\tty.c

[Gary Thomas <gthomas at redhat dot com>]

A fix for this problem has already been installed.  

We suggest that you use CVS to keep track of the [very] latest 
eCos sources.  See our web page (http://sourceware.cygnus.com/ecos)
for the details.

On 28-Jan-00 Alexander Hering wrote:
> Hello,
> 
> we have found an error in the tty driver.
> When i press the backspace key, when no more characters are in the
> buffer, the last input is printed again.
> 
> In function tty_read size is declared as unsigned int, and must not be
> tested against a value below zero.
> 
> ====> cyg_uint32 size, clen;
> 
>       if ((c == '\b') || (c == 0x7F)) {
>         size -= 2;  // erase one character + 'backspace' char
> ====>   if (size < 0) size = 0;
>       
> Greetings
> 
>       Alex
> 
> -- 
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> 
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