>> A solution is to declare the datatype explicitly as signed char or compile >> using the option -fsigned-char.
>Compiling with -fsigned-char, though it works, is not the "right" >solution. It's better to fix the bug in the code. I agree. As soon as a source is compiled with -fsigned-char and contains a function which calls a function _not_ compiled with -fsigned-char passing a char, this approach doesn't work. Btw., I did the grep on a local copy of the build logs. If you don't find the log of your package at http://buildd.debian.org/ let me know and I will you send an excerpt of the log. Regards, Gerhard