on a system with gcc 4.3.3, ermerging xen and xen-tools 3.3.0 make their build to fail. gcc 4.3.2 does not have this trouble. xen-tools : cc1: warnings being treated as errors xc_dom_x86.c: In function 'start_info_x86_32': xc_dom_x86.c:421: error: format not a string literal and no format arguments xc_dom_x86.c:421: error: format not a string literal and no format arguments xc_dom_x86.c: In function 'start_info_x86_64': xc_dom_x86.c:460: error: format not a string literal and no format arguments xc_dom_x86.c:460: error: format not a string literal and no format argument at this line we have : snprintf(start_info->magic, sizeof(start_info->magic), dom->guest_type); xen : cc1: warnings being treated as errors symbols.c: In function 'read_symbol': symbols.c:84: error: ignoring return value of 'fgets', declared with attribute warn_unused_result static int read_symbol(FILE *in, struct sym_entry *s) { char str[500]; char *sym, stype; int rc; rc = fscanf(in, "%llx %c %499s\n", &s->addr, &stype, str); if (rc != 3) { if (rc != EOF) { /* skip line */ fgets(str, 500, in); /* <-- Line 84 !*/ } return -1; } Reproducible: Always Steps to Reproduce: 1. Add Xen to layman overlays 2. Update gcc to version 4.3.3 3. Try to emerge xen and xen-tools 4. Kaboom! Actual Results: Compilation fails Expected Results: compilation must succeed Should I report for those 2 packages too ?
Created attachment 180538 [details] build.log
Created attachment 180539 [details] environment
Portage 2.1.6.7 (default/linux/amd64/2008.0/desktop, gcc-4.3.3, glibc-2.9_p20081201-r1, 2.6.27-xen-r7 x86_64) ================================================================= System uname: Linux-2.6.27-xen-r7-x86_64-Intel-R-_Core-TM-_i7_CPU_920_@_2.67GHz-with-glibc2.2.5 Timestamp of tree: Sat, 31 Jan 2009 13:15:01 +0000 distcc 3.1 x86_64-pc-linux-gnu [disabled] ccache version 2.4 [disabled] app-shells/bash: 3.2_p48 dev-java/java-config: 1.3.7-r1, 2.1.7 dev-lang/python: 2.5.4-r2 dev-python/pycrypto: 2.0.1-r6 dev-util/ccache: 2.4-r8 dev-util/cmake: 2.6.2-r1 sys-apps/baselayout: 2.0.0 sys-apps/openrc: 0.4.2 sys-apps/sandbox: 1.3.3 sys-devel/autoconf: 2.13, 2.63 sys-devel/automake: 1.5, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10.2 sys-devel/binutils: 2.19 sys-devel/gcc-config: 1.4.1 sys-devel/libtool: 2.2.6a virtual/os-headers: 2.6.28-r1 ACCEPT_KEYWORDS="amd64 ~amd64" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=core2 -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/kde/4.1/env /usr/kde/4.1/share/config /usr/kde/4.1/shutdown /usr/share/config /var/bind" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /etc/eselect/postgresql /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/udev/rules.d" CXXFLAGS="-march=core2 -O2 -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="distlocks fixpackages metadata-transfer parallel-fetch protect-owned sandbox sfperms strict unmerge-orphans userfetch" GENTOO_MIRRORS="ftp://localhost/gentoo" LDFLAGS="-Wl,-O1" LINGUAS="en fr" MAKEOPTS="-j9" 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" PORTDIR_OVERLAY="/usr/local/portage/layman/xen /usr/local/portage/layman/nx /usr/local/portage/layman/vmware" SYNC="rsync://localhost/gentoo-portage" USE="X a52 aac acl acpi alsa amd64 apache2 berkdb bluetooth branding bzip2 cairo cdda cddb cdio cdr chardet cli cracklib crypt cups dbus dirac dri dts dvd dvdr dvdread dvi eds emboss encode esd evo fam ffmpeg firefox flac fortran ftp gdbm gif giff glib gnome gpm gstreamer gtk gtk2 hal hvm iconv isdnlog jack java jpeg jpeg2k kdeprefix kerberos ldap libnotify mad midi mikmod mmx mp2 mp3 mpeg mudflap multilib nautilus ncurses nls nptl nptlonly nswrapper ntpl objc objc++ objc-gc odbc ogg openal opengl openmp oss pam pcre pdf perl png postgres ppds pppd python qt3 qt3support qt4 quicktime readline reflection samba sdl session spell spl sse sse2 sse3 ssl ssse3 startup-notification svg sysfs tcl tcpd theora tiff tk truetype unicode usb vorbis x264 xml xorg xulrunner xv xvid zlib" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" 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 authn_alias authn_anon 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 deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" ELIBC="glibc" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="en fr" USERLAND="GNU" VIDEO_CARDS="vesa fglrx" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, LANG, LC_ALL, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
gcc is not doing anything wrong here; the extra warnings are deliberate and useful, and they wouldn't cause any problems for you if packages did not force -Werror into the build (they shouldn't). Since you've already opened bugs for xen and xen-tools, I'll close this one instead of changing the summary. Thanks for the reports.
(In reply to comment #4) > gcc is not doing anything wrong here; the extra warnings are deliberate and > useful, and they wouldn't cause any problems for you if packages did not force > -Werror into the build (they shouldn't). Since you've already opened bugs for > xen and xen-tools, I'll close this one instead of changing the summary. Thanks > for the reports. > Ok, took note. Thanks for the precision :-)
