while compiling I noticed the following warnings qscriptbuffer_p.h: In member function ‘void QScriptEnginePrivate::popContext()’: qscriptbuffer_p.h:138: warning: assuming signed overflow does not occur when ass uming that (X + c) < X is always false qscriptbuffer_p.h: In member function ‘void QScriptValueImpl::createMember(QScri ptNameIdImpl*, QScript::Member*, uint)’: qscriptbuffer_p.h:138: warning: assuming signed overflow does not occur when ass uming that (X + c) < X is always false qscriptbuffer_p.h:138: warning: assuming signed overflow does not occur when ass uming that (X + c) < X is always false moc qscriptengine.h Since this checks are use for overflow detection, things could brake if the are optimized away by the compiler. I tried adding -fno-strict-overflow to the CFLAGS/CXXFLAGS in /etc/make.conf but this did not change anything (yet an other packet ignoring custom CFLAGS?). Reproducible: Always Steps to Reproduce: 1. emerge x11-libs/qt-script-4.4.2 Actual Results: overflow checks are optimized away (yea... gcc people think this is a valid optimization, because the standart says overflow is undefined behaviour...) Expected Results: overflow checks should not be optimized away Portage 2.2_rc12 (default-linux/x86/2007.0, gcc-4.3.2, glibc-2.8_p20080602-r0, 2.6.26-gentoo i686) ================================================================= System uname: Linux-2.6.26-gentoo-i686-mobile_AMD_Athlon-tm-_XP-M_2500+-with-glibc2.0 Timestamp of tree: Sat, 11 Oct 2008 12:18:01 +0000 app-shells/bash: 3.2_p39 dev-java/java-config: 1.3.7, 2.1.6-r1 dev-lang/python: 2.5.2-r8 sys-apps/baselayout: 2.0.0 sys-apps/openrc: 0.3.0-r1 sys-apps/sandbox: 1.2.18.1-r3 sys-devel/autoconf: 2.13, 2.63 sys-devel/automake: 1.5, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10.1-r1 sys-devel/binutils: 2.18-r3 sys-devel/gcc-config: 1.4.0-r4 sys-devel/libtool: 2.2.6a virtual/os-headers: 2.6.26 ACCEPT_KEYWORDS="x86 ~x86" CBUILD="i686-pc-linux-gnu" CFLAGS="-march=athlon-xp -O2 -pipe -ggdb -fno-strict-overflow" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/share/config /var/qmail/alias /var/qmail/control /var/vpopmail/etc" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php5/ext-active/ /etc/php/cgi-php5/ext-active/ /etc/php/cli-php5/ext-active/ /etc/revdep-rebuild /etc/terminfo /etc/texmf/web2c /etc/udev/rules.d" CXXFLAGS="-march=athlon-xp -O2 -pipe -ggdb -fno-strict-overflow" DISTDIR="/usr/portage/distfiles" FEATURES="collision-protec distlocks parallel-fetch preserve-libs protect-owned sandbox sfperms splitdebug strict unmerge-orphans userfetch" GENTOO_MIRRORS="ftp://de-mirror.org/distro/gentoo/" LANG="en_US.utf8" LC_ALL="en_US.utf8" LDFLAGS="" LINGUAS="en" MAKEOPTS="-j3" PKGDIR="/usr/portage/packages" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage" USE="3dnow 3dnowext X a52 aac aalib ac3 acl alsa amr apache2 audiofile bash-completion bluetooth bzip2 cdio cli cracklib crypt dbus dri dvd dvdnav dvdread encode exif fam fbcon ffmpeg fftw flac font-server fontconfig fortran gdbm gif hal iconv imagemagick isdnlog jack jpeg jpeg2k ladspa lame laptop libsamplerate mad midi mmx mmxext mng mp3 mp4 mpeg mudflap ncurses nls nptl nptlonly nsplugin offensive ogg openmp pam pcre pdf png pnm pppd qt4 readline reflection session sndfile speex spell spl sse ssl svg tcpd tetex theora tiff truetype unicode usb vidx vim-pager vim-syntax vorbis win32codecs wmf x264 x86 xinerama xorg xvid zlib" ALSA_CARDS="intel8x0" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="actions alias auth_basic auth_digest authn_anon authn_dbd authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache dav dav_fs dav_lock dbd deflate dir disk_cache env expires ext_filter file_cache filter headers ident imagemap include info log_config logio mem_cache mime mime_magic negotiation proxy proxy_ajp proxy_balancer proxy_connect proxy_http rewrite setenvif so speling status unique_id userdir usertrack vhost_alias" ELIBC="glibc" INPUT_DEVICES="keyboard mouse synaptics evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="en" USERLAND="GNU" VIDEO_CARDS="sis" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, PORTDIR_OVERLAY
(In reply to comment #0) Try the use flag custom-cxxflags
