Re: [gtk-list] Cast checking error messages

[Tim Janik <timj gtk org>]

On Thu, 25 Mar 1999 rowe@excc.ex.ac.uk wrote:

> Forgive me if this has already been done to death, but currently in
> their type debugging mode the various cast macros such as
> GTK_TOGGLE_BUTTON (widget) just give a warning like:
> 
> Gtk-WARNING **: invalid cast from `GtkCheckMenuItem' to `GtkToggleButton'
> 
> Now I sort of assume that the idea is to run under a debugger to find
> out where your error is but on my system (RH 5.2 Intel) this is
> rather difficult: g_warn is a macro for g_log and if I try to set a
> break point inside g_log gdb rather scarily gives me:
> 
> Function "g_log" not defined.
> 
> which makes me wonder if gcc is just inlining the whole thing. 
> 
> So how does one get some helpful information about where the problem
> is? (I put in the error above deliberately of course but you know..).

try running your programs with --g-fatal-warning in gdb.

> 
> John
> 

---
ciaoTJ