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The problem is that in GTK there's only one way to pass user data into a callback and that's through a gpointer. So even when what you want to pass isn't a pointer (in this case an enum) you don't have any good way to get it there other than using GINT_TO_POINTER and GPOINTER_TO_INT. In a 64-bit arch, is there any way I can tell the compiler "Yes I really mean this" when interpreting a pointer as an int? Or some way to extract the least significant 32 bit of the pointer and then apply GPOINTER_TO_INT to that? Chris Moller Wu Zhou mumbled something on 04/18/2006 01:57 AM: > I met another error when I try to build the latest cvs source on my ppc64 > box. This is general to GPOINTER_TO_INT on 64-bit arch, I guess. > > Here is the output message in the building process: > > /usr/bin/gcc -m64 -DPACKAGE_NAME=\"frysk\" -DPACKAGE_TARNAME=\"frysk\" -DPACKAGE_VERSION=\"0.0.1.2006.04.17\" -DPACKAGE_STRING=\"frysk\ 0.0.1.2006.04.17\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE=\"frysk\" -DVERSION=\"0.0.1.2006.04.17\" -I. -I../../../frysk/frysk-gtk/tlwidgets -fPIC -DPIC -std=gnu99 -Wall -Werror -I../../../frysk/frysk-gtk/tlwidgets/src/widgets -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pango-1.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libgtk-java -I/usr/include/glib-java -g -O -MT src/widgets/ftkstripchartx.o -MD -MP -MF "$depbase.Tpo" -c -o src/widgets/ftkstripchartx.o ../../../frysk/frysk-gtk/tlwidgets/src/widgets/ftkstripchartx.c; \ > then mv -f "$depbase.Tpo" "$depbase.Po"; else rm -f "$depbase.Tpo"; exit 1; fi > cc1: warnings being treated as errors > ../../../frysk/frysk-gtk/tlwidgets/src/widgets/ftkstripchartx.c: In function ‘ftk_stripchart_button_clicked’: > ../../../frysk/frysk-gtk/tlwidgets/src/widgets/ftkstripchartx.c:1149: warning: cast from pointer to integer of different size > ../../../frysk/frysk-gtk/tlwidgets/src/widgets/ftkstripchartx.c: In function ‘ftk_spinbutton_vc’: > ../../../frysk/frysk-gtk/tlwidgets/src/widgets/ftkstripchartx.c:1224: warning: cast from pointer to integer of different size > make[2]: *** [src/widgets/ftkstripchartx.o] Error 1 > > In line 1149 and 1224, there is a macro GPOINTER_TO_INT, trying to convert > a type of gpointer (a pointer to void) to gint, on 64-bit arch, gpointer > is 64-bit, so there is a warning poped out to complain this. > > Maybe we need to report this problem to the upstream? A temporary > work-around is to disable the "-Werror" option. > > Any comments? > > Thanx > - Wu Zhou
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