Skip Montanaro <[EMAIL PROTECTED]> writes:
> I'm getting an assertion error in forward_line_leaving_caches_unmodified in
> gtktextiter.c (this is from the vanilla 1.3.5 distribution). There is a
> test of new_line:
>
> if (new_line != NULL)
> {
> ... do some stuff ...
> }
> else
> {
> /* There is no way to move forward; we were already
> at the "end" index. (the end index is the last
> line pointer, segment_byte_offset of 0) */
>
> g_assert (real->line_char_offset == 0 ||
> real->line_byte_offset == 0);
> ... do some other stuff ...
> }
>
> I'm landing in the else clause. The assertion is failing because
> real_line_char_offset is -1 and real->line_byte_offset is 25. I looked at
> new_line and discovered its value to be 0xffffffff. So my confusion is
> two-fold. One, new_line's value looks mighty suspicious to me. (Looks like
> -1 instead of a valid pointer.) Two, how in the heck could new_line have
> compared equal to NULL? I don't believe I did anything unusual when
> compiling Gtk, so the gcc compilation flags where probably just "-g -O2".
> I'll try rebuilding without any optimization and see if that helps. Any
> other debugging suggestions would be appreciated.
>
The value of new_line is probably either the stack getting messed up
or gdb getting confused.
If you can make a test case for this so I can reproduce it, I'll try
to sort it out.
Havoc
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