Bugzilla Bug 28751

This seems to be the same type of issue as bug 28664:
---
gcc -DHAVE_CONFIG_H -I. -I. -I.. -DORBIT2=1 -I/usr/include/gtk-2.0
-I/usr/lib/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/pango-1.0
-I/usr/X11R6/include -I/usr/include/freetype2 -I/usr/include/glib-2.0
-I/usr/lib/glib-2.0/include -I/usr/include/libglade-2.0 -I/usr/include/libxml2
-I/usr/include/gconf/2 -I/usr/include/orbit-2.0
-I/usr/include/libgnomecanvas-2.0 -I/usr/include/libart-2.0               
-I/usr/include                                          
-DGNOMELOCALEDIR=\""/usr/share/locale"\"          
-DZENITY_DATADIR=\""/usr/share/zenity"\"    -g -pipe -c msg.c
main.c: In function `main':
main.c:1017: error: `LC_ALL' undeclared (first use in this function)
main.c:1017: error: (Each undeclared identifier is reported only once
main.c:1017: error: for each function it appears in.)
make[2]: *** [main.o] Error 1
make[2]: *** Waiting for unfinished jobs....
make[2]: Leaving directory `/var/tmp/portage/zenity-1.6/work/zenity-1.6/src'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/var/tmp/portage/zenity-1.6/work/zenity-1.6'
make: *** [all-recursive-am] Error 2

!!! ERROR: gnome-extra/zenity-1.6 failed.
!!! Function gnome2_src_compile, Line 39, Exitcode 2
!!! compile failure
---

Emerge info:
---
Portage 2.0.49-r4 (default-x86-1.4, gcc-3.3.1, glibc-2.3.2-r1, 2.6.0-test5)
=================================================================
System uname: 2.6.0-test5 i686 AMD Athlon(tm) processor
distcc 2.10 i686-pc-linux-gnu (protocols 1 and 2) (default port 3632) [disabled]
ccache version 2.2 [enabled]
ACCEPT_KEYWORDS="x86 ~x86"
AUTOCLEAN="yes"
CFLAGS="-O0 -g -pipe"
CHOST="i686-pc-linux-gnu"
COMPILER="gcc3"
CONFIG_PROTECT="/etc /var/qmail/control /usr/kde/2/share/config
/usr/kde/3/share/config /usr/X11R6/lib/X11/xkb /usr/kde/3.1/share/config
/usr/share/texmf/tex/generic/config/ /usr/share/texmf/tex/platex/config/
/usr/share/config"
CONFIG_PROTECT_MASK="/etc/gconf /etc/env.d"
CXXFLAGS="-O0 -g -pipe"
DISTDIR="/usr/portage/distfiles"
FEATURES="autoaddcvs sandbox ccache strict nostrip cvs"
GENTOO_MIRRORS="http://gentoo.oregonstate.edu
http://distro.ibiblio.org/pub/Linux/distributions/gentoo"
MAKEOPTS="-j2"
PKGDIR="/usr/portage/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/local/portage"
SYNC="rsync://rsync.namerica.gentoo.org/gentoo-portage"
USE="x86 oss avi crypt cups encode foomaticdb gif jpeg libg++ mad mikmod mmx
mpeg ncurses nls pdflib png quicktime spell truetype xml2 xmms xv zlib directfb
gdbm berkdb slang readline arts svga java X sdl gpm tcpd pam libwww ssl python
imlib oggvorbis gnome gtk qt kde motif opengl cdr 3dnow aalib acpi alsa -apm
artswrappersuid bonobo dga dvd esd faad gstreamer gtk2 ldap mozilla nas perl pic
samba slp tcltk tetex tiff v4l wmf wxwindows xinerama xml xvid"
---

Working CFLAGS:
"-O1 -g -pipe"
"-O2 -g -pipe"

Failed CFLAGS:
"-O0 -g -pipe"
""

*** This bug has been marked as a duplicate of 28664 ***

Re Comment 13 on bug 28664:
I only asked because the failure was never addressed.
As it stands, if a user does not have -O1 or higher in their cflags, the compile will probably fail for them. (I don't have the time right now to hunt down exactly which optimization "fixes" the broken source.)

If a patch is undesirable, the simplest work-around I can think of is to filter out -O0 and prepend -O1 to CFLAGS.