[Qemu-devel] -Werror=tautological-compare error with -save-temps on fedora 24 gcc 6.2.1

[Anand J]

Hi,

I'm using gcc 6.2.1 for compiling qemu with following options in Fedora 24

../../../configure --enable-debug --extra-cflags="-save-temps"
make

and getting following error.

*  CC      ui/gtk.o*
*qemu/ui/gtk.c: In function ‘gd_map_keycode’:*
*qemu/ui/gtk.c:1030:21: error: self-comparison always evaluates to true
[-Werror=tautological-compare]*
*     } else if (GDK_IS_X11_DISPLAY(dpy) && gdk_keycode < 158) {*
*                     ^~*
*qemu/ui/gtk.c: In function ‘gd_set_keycode_type’:*
*qemu/ui/gtk.c:2123:18: error: self-comparison always evaluates to true
[-Werror=tautological-compare]*
*     if (GDK_IS_X11_DISPLAY(display)) {*
*                  ^~*
*cc1: all warnings being treated as errors*
*qemu/rules.mak:60: recipe for target 'ui/gtk.o' failed*
*make: *** [ui/gtk.o] Error 1*



Build works fine without -save-temps options. Does anybody know how to fix
this?

Thanks,
Anand