Description of problem:
Hello there,

I have just tried to compile package gthumb-2.0.1-1 from Redhat 9.0
with compiler flag -Wall.

The compiler said

preferences.c:351: warning: operation on `i' may be undefined
preferences.c:352: warning: operation on `i' may be undefined
preferences.c:353: warning: operation on `i' may be undefined
preferences.c:397: warning: operation on `i' may be undefined
preferences.c:398: warning: operation on `i' may be undefined
preferences.c:399: warning: operation on `i' may be undefined

The source code is

        *r = dec (hex[i++]) * 16 + dec (hex[i++]);
        *g = dec (hex[i++]) * 16 + dec (hex[i++]);
        *b = dec (hex[i++]) * 16 + dec (hex[i++]);
It is a basic fact of the C language that this kind of increment
produces undefined code. Much better to write it something like

        *r = dec (hex[i]) * 16 + dec (hex[i + 1]);
        i += 2;
        *g = dec (hex[i]) * 16 + dec (hex[i + 1]);
        i += 2;
        *b = dec (hex[i]) * 16 + dec (hex[i + 1]);
        i += 2;


Version-Release number of selected component (if applicable):


How reproducible:


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Additional info: