To get some sense on how is GCC 5 standing, we (myself and Jakub Jelinek) have performed a test mass rebuild of rawhide (January 15th package list) using gcc-5.0.0-0.5.fc22 on x86_64, and for those packages that failed also rebuilt the same package with gcc-4.9.2-5.fc22.x86_64 to quickly remove from the list packages that fail for non-GCC related reasons. There were 16230 packages overall. 15303 packages built fine, 691 packages failed to build with both gcc-5.0.0-0.5.fc22 and gcc-4.9.2-5.fc22 (ignored for this analysis, unlikely to be GCC 5 related). That leaves us with 236 packages that failed to build with GCC 5, but succeeded with GCC 4.9. These consist of either package bugs, or GCC bugs. As things stand, just about 19 packages did not build due to bugs in gcc-5.0.0-0.5.fc22. All GCC bugs except one are fixed at this time, and I promise I will fix the remaining one before long. As usually, we will provide a "porting to" document to ease the transition to the new GCC. This document is still in the works, yet it already contains detailed description of the standard change for C; interested readers may visit https://gcc.gnu.org/gcc-5/porting_to.html. Main offender this time is probably the gnu11 change that entails different inline semantics, enables some warnings by default, bumps the __STDC_VERSION__, and so on. Hopefully it won't take too long till these packages catch on. Many packages were not prepared for the new major version of GCC. There's also been quite a lot of churn because of the preprocessor now emitting linemarkers in the output when the -P option is not turned on. The C++ compiler now rejects some code that it used to accept. Furthermore, GCC 5 has a batch of new warnings, which, combined with -Werror, caused some additional failures. The following is a more detailed list of what and why failed. fcoe-utils-1.0.29-7.git9267509.fc22.src.rpm gnome-disk-utility-3.14.0-1.fc22.src.rpm lldpad-0.9.46-8.git48a5f38.fc22.src.rpm udisks2-2.1.3-4.fc22.src.rpm build failure due to -Werror; the -Wformat=2 option now enables a new warning -Wformat-signedness, which warns about e.g.: printf ("%d\n", 1U) (%d expects argument of type int, but the argument has type unsigned int). dropwatch-1.4-10.fc22.src.rpm build failure due to gnu11 change: glibc supports dynamic allocation for string inputs via %a modifier, but in C99, the %a modifier is a synonym for %f (float), so the compiler expects an argument of type float *. The package should have used the %m modifier, specified by POSIX.1-2008. blktap-3.0.0-2.fc22.git0.9.2.src.rpm cdrkit-1.1.11-26.fc22.src.rpm cstream-3.1.1-3.fc22.src.rpm dahdi-tools-2.10.0-2.fc22.src.rpm dee-1.2.7-3.fc22.src.rpm gdb-7.8.50.20150108-1.fc22.src.rpm insight-7.8.50-2.20140827git.fc22.src.rpm libomxil-bellagio-0.9.3-10.fc22.src.rpm lmms-1.0.3-3.fc22.src.rpm open-vm-tools-9.4.6-4.fc22.src.rpm perl-Crypt-OpenSSL-X509-1.803-4.fc22.src.rpm python-pyblock-0.53-8.fc22.src.rpm sockperf-2.5.244-2.fc22.src.rpm build failure due to -Werror; the new -Wlogical-not-parentheses warning included in -Wall warns (cases such as "if (!TYPE (t) == TYPE_FOO)"). glibc-2.20.90-17.fc22.src.rpm build failure due to -Werror; -Waggressive-loop-optimizations triggered during the testsuite run; this has already been fixed upstream: https://sourceware.org/ml/libc-alpha/2015-01/msg00369.html gtranslator-2.91.6-7.fc22.src.rpm build failure due to -Werror; -Wmissing-include-dirs warning warns; in 4.9 and earlier, the compiler ignored the -Werror option for this warning, now it does not. giada-0.7.0-5.fc22.src.rpm build failure due to -Werror; -Wparentheses triggered; this warning now works even in g++ on e.g.: if (!i & 4) ... ipv6calc-0.97.4-7.fc22.src.rpm build failure due to -Werror; the new -Wsizeof-array-argument warns. This warning detects e.g.: int foo (char a[8]) { size_t s = sizeof (a); ... } where sizeof on the array function parameter will return a size of char *, not a size of the array. xen-4.4.1-12.fc22.src.rpm build failure due to -Werror; -Wmaybe-uninitialized warns about possibly uninitialized fields. thewidgetfactory-0.2.1-20.fc22.src.rpm build failure due to gnu11 change: missing declaration of strcmp. tog-pegasus-2.13.0-19.fc22.src.rpm build failure due to -Werror; here -Wunused-variable triggers (unused const Uint32 PEGASUS_DYNAMIC_LEN(PEGASUS_DYNAMIC.size()); in a header file). mongo-cxx-driver-1.0.0-0.7.rc3.fc22.src.rpm build failure due to -Werror; the -Wunused-variable warning triggers rcs-5.9.3-1.fc22.src.rpm build failure due to wrong placement of _Noreturn, with -std=gnu89 it used __attribute__((__noreturn__)) instead, which is more flexible in the placement (can go before or after the prototype, while _Noreturn can only go before in function-specifiers). argyllcms-1.6.3-4.fc22.src.rpm libgphoto2-2.5.5.1-1.fc22.src.rpm nogravity-2.00-22.fc22.src.rpm these packages are not prepared for newer __STDC_VERSION__. Note that with the gnu11 default __STDC_VERSION__ is defined to 201112L. nogravity has: #if !defined __STDC_VERSION__ || __STDC_VERSION__ < 199901L ... #include <stdint.h> ... and then ../../rlx32/src/v3xsoft.c:137:22: error: 'uintptr_t' undeclared libgphoto2: #if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L #define GP_LOG_DATA(DATA, SIZE) gp_log_data(__func__, DATA, SIZE) #else #define GP_LOG_DATA(DATA, SIZE) /* no-op */ then gphoto2-port.c:390:2: error: called object is not a function or function pointer argyllcms: #if (__STDC_VERSION__ >= 199901L) ... # define ATTRIBUTE_NORETURN __declspec(noreturn) ... and then: extern void ATTRIBUTE_NORETURN error(char *fmt, ...); and that fails. ekiga-4.0.1-15.fc22.src.rpm opal-3.10.10-5.fc22.src.rpm ptlib-2.10.10-8.fc22.src.rpm these packages are trying to use <bits/atomicity.h>, but they should use <ext/atomicity.h>. Probaby wrong __GNUC__ check. firefox-35.0-1.fc22.src.rpm icecat-31.2.0-6.fc22.src.rpm kphotoalbum-4.5-4.fc22.src.rpm thunderbird-lightning-3.3-5.fc22.src.rpm these packages fail to build because they are trying to convert std::nullptr_t to bool, and that requires direct-initialization. The rules in C++11 have changed, cf. http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#1423 So: bool b = nullptr; // wrong bool b2(nullptr); // ok These packages should simply have used false/true instead. steghide-0.5.1-24.fc22.src.rpm build failed because the package uses deprecated <hash_set>. methane-1.5.1-9.fc21.src.rpm build error because the C++ compiler in the C++11 mode started to reject invalid code with narrowing conversion of constants within { }. (This change was deliberate.) For instance: signed char a { __INT_MAX__ }; is accepted by g++ 4.9, but rejected by g++ 5. see http://gcc.gnu.org/r213776 elk-2.3.22-10.fc22.src.rpm ape-2.2.0-2.fc22.src.rpm netcdf-fortran-4.4.1-1.fc22.src.rpm build error because the packages try to load a Fortran module created by a different version of GNU Fortran. nodejs-mapnik-vector-tile-0.6.1-1.fc22.src.rpm build failure due to wrong check of the GCC version; it uses C++11 features without specifying -std=c++11 or -std=gnu++11. ogre-1.9.0-5.fc22.src.rpm it's unclear yet whether the code in the package is valid or not; g++ started to reject the code since http://gcc.gnu.org/PR20332 The error message is "forming pointer to reference type". odb-2.3.0-8.fc22.src.rpm build failure because the gcc plugin API has changed. DevIL-1.7.8-20.fc22.src.rpm libhugetlbfs-2.18-4.fc22.src.rpm ax25-tools-0.0.10-0.9.rc2.fc22.src.rpm espresso-ab-1.0-8.fc22.src.rpm build failure due to gnu11 change: "restrict" is a keyword, so you can't have variables with such a name, e.g. int i, restrict; compiles in the C90 mode, but fails in the C99 mode. bigloo-4.1a-6.2.fc22.src.rpm memstomp-0.1.4-15.fc22.src.rpm build failure due to gnu11 change: -Wimplicit-int is turned on by default now, which is the reason these packages didn't compile properly. See the porting_to document for more details. libcmpiutil-0.5.7-4.fc22.src.rpm nfs-ganesha-2.1.0-12.fc22.src.rpm fvkbd-0.2.2-10.fc22.src.rpm build failure due to gnu11 change that entails different inline semantics; inline function declared but never defined. See the porting_to document for more details. libvpx-1.3.0-6.fc22.src.rpm xemacs-21.5.34-8.20140605hgacf1c26e3019.fc22.src.rpm build failure due to gnu11 change: these packages are defining theirs own max_align_t type. But in C11, this type is already defined in <stddef.h>, which is a conflict and thus the compile-time error. The same is true for C++11. ocaml-cil-1.7.3-14.fc22.src.rpm build failure due to gnu11 change: during the %check phase, several warnings that are now enabled by default trigger. xarchon-0.50-17.fc22.src.rpm xmms-speex-0.9.1-21.src.rpm netdump-server-0.7.16-37.fc22.src.rpm ssbd-0.10-12.fc22.src.rpm gccxml-0.9.0-0.25.20140718.gitab651a2.fc22.src.rpm ustr-1.0.4-18.fc22.src.rpm xmms-1.2.11-22.20071117cvs.fc22.src.rpm spacechart-0.9.5-14.fc22.src.rpm xdialog-2.3.1-15.fc22.src.rpm siril-0.8-19.fc22.src.rpm soundtracker-0.6.8-20.fc22.src.rpm ircd-ratbox-2.2.9-3.fc22.src.rpm libglade-0.17-33.fc22.src.rpm librep-0.92.4-1.fc22.src.rpm bubblemon-1.46-17.fc22.src.rpm gcx-0.9.11-17.fc22.src.rpm libnetdude-0.11-11.fc22.src.rpm ghc-network-2.4.1.2-32.fc21.src.rpm hunt-1.5-20.fc22.src.rpm koules-1.4-18.fc22.src.rpm xmms-scrobbler-0.4.0-15.fc22.src.rpm hfsplusutils-1.0.4-21.fc22.src.rpm glib-1.2.10-43.fc22.src.rpm svgalib-1.9.25-16.fc22.src.rpm memtest86+-5.01-8.fc22.src.rpm xmms-crossfade-0.3.14-10.fc22.src.rpm xmms-arts-0.7.1-16.src.rpm imlib-1.9.15-26.fc22.src.rpm manedit-1.2.1-11.fc22.src.rpm xmms-lirc-1.4-21.src.rpm xconvers-0.8.3-15.fc22.src.rpm bird-1.4.5-1.fc22.src.rpm hugs98-2006.09-20.fc22.src.rpm libstroke-0.5.1-31.fc22.src.rpm gtk+-1.2.10-80.fc22.src.rpm Io-language-20131204-1.fc22.src.rpm mtd-utils-1.5.1-3.fc22.src.rpm ORBit-0.5.17-40.fc22.src.rpm build failure due to gnu11 change that entails different inline semantics; the multiple definition error. See the porting_to document for more details. fusecompress-2.6-24.20120812gita65cc33.fc22.src.rpm pion-net-4.0.9-15.fc22.src.rpm aqsis-1.8.2-13.fc22.src.rpm shiny-0.3-8.git411ac43.fc22.src.rpm adobe-source-libraries-1.0.43-23.fc22.src.rpm lucene++-3.0.6-1.fc22.src.rpm dmlite-0.7.2-1.fc22.src.rpm ceph-0.87-1.fc22.src.rpm boost-1.55.0-7.fc22.src.rpm ompl-1.0.0-1.fc22.src.rpm openttd-1.4.4-1.fc22.src.rpm these packages failed because of errors such as the following: error: no matching function for call to 'call_once(boost::once_flag&, void (*&)())' The bug here was on the boost side I think, where boost code didn't cope with C++11 well, but it seems to be already fixed, thus these packages should build fine now. shim-0.8-1.fc22.src.rpm gummiboot-46-1.fc22.src.rpm these packages failed to build, because they are using the -nostdinc option (don't search header files in the standard directories), yet with gnu11 default they are trying to include the <stdint.h> header. cmocka-0.4.1-3.fc22.src.rpm gmqcc-0.3.5-6.fc22.src.rpm libssh-0.6.4-1.fc22.src.rpm mirall-1.7.0-1.fc22.src.rpm intrace-1.5-6.fc22.src.rpm build error because of -pedantic-errors: gcc 5 has a new warning that warns about GNU predefined identifiers, such as __FUNCTION__, if a -Wpedantic option is specified. C99 supports the __func__ predefined identifier, so the packages can use that, or add the __extension__ keyword where desirable. llvm-3.5.0-6.fc22.src.rpm this was a bug in LLVM sources; it's been already fixed in: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/ADT/IntrusiveRefCntPtr.h?r1=218295&r2=218294&pathrev=218295 yap-6.2.2-12.fc22.src.rpm a bug in the package - fails since http://gcc.gnu.org/PR59366 Here, a friend function template defined in a class was found without ADL. undertaker-1.6.1-1.fc22.src.rpm g++ has (wrongly) accepted an invalid code, this has been fixed by http://gcc.gnu.org/PR60463 python3-3.4.2-3.fc22.src.rpm build started failing with http://gcc.gnu.org/PR60517 The code has an undefined behavior (returning address of a local variable); it tried to perform a stack overflow, but the compiler turned the code via tail recursion optimization into an endless loop. cclive-0.9.3-4.fc22.src.rpm cvc4-1.3-7.fc22.src.rpm dans-gdal-scripts-0.23-5.fc22.src.rpm emacs-24.4-3.fc22.src.rpm ember-0.7.2-3.fc22.src.rpm flamerobin-0.9.3-8.20130401snap.fc22.src.rpm ghc-gtk-0.12.5.0-3.fc22.src.rpm ghc-webkit-0.12.5.1-3.fc22.src.rpm gnote-3.14.0-1.fc22.src.rpm ksh-20120801-21.fc22.src.rpm libason-0.1.2-2.fc22.src.rpm libcmis-0.5.0-1.fc22.src.rpm libgpg-error-1.16-1.fc22.src.rpm libixion-0.7.0-3.fc22.src.rpm liborcus-0.7.0-5.fc22.src.rpm ncurses-5.9-17.20140906.fc22.src.rpm openldap-2.4.40-5.fc22.src.rpm perl-5.20.1-315.fc22.src.rpm xorg-x11-server-1.16.2.901-1.fc22.src.rpm xorg-x11-server-utils-7.7-10.fc22.src.rpm zsh-5.0.7-4.fc22.src.rpm these packages failed to build because of the changes in the preprocessor; gcc started to generate line directives to better detect whether a macro tokens come from a system header - see http://gcc.gnu.org/PR60723 The fix is to use the -P option if the code isn't prepared to deal with such directives. guitarix-0.32.0-1.fc22.src.rpm gcc bug - libstdc++ had __attribute__((always_inline)) instead of __always_inline__. fixed upstream and in gcc-5.0.0-0.6.fc22, http://gcc.gnu.org/r220243 spatialindex-1.8.1-3.fc22.src.rpm gcc bug - internal compiler error in devirtualization fixed upstream and in gcc-5.0.0-0.6.fc22, http://gcc.gnu.org/PR64538 abrt-java-connector-1.1.0-3.fc22.src.rpm libldm-0.2.3-7.fc22.src.rpm gcc bug - bogus -Wmissing-fields-initializers fixed upstream and in gcc-5.0.0-0.6.fc22, http://gcc.gnu.org/PR64709 telepathy-salut-0.8.1-7.fc22.src.rpm gcc bug - a bug in byte swap optimizations fixed upstream and in gcc-5.0.0-0.6.fc22, http://gcc.gnu.org/PR64718 bash-4.3.33-1.fc22.src.rpm openvpn-2.3.6-1.fc22.src.rpm pymol-1.7.4-1.20141207svn4104.fc22.src.rpm gcc bug - internal compiler error in the uninit pass fixed upstream and in gcc-5.0.0-0.6.fc22, http://gcc.gnu.org/PR64764 davix-0.4.0-1.fc22.src.rpm gazebo-4.0.2-1.fc22.src.rpm gmock-1.7.0-1.fc22.src.rpm gtest-1.7.0-2.fc22.src.rpm java-1.8.0-openjdk-1.8.0.40-19.b12.fc22.src.rpm llvm34-3.4.2-5.fc22.src.rpm redeclipse-1.4-8.fc22.src.rpm gcc bug - wrong expansion of the __LINE__ macro fixed upstream and in gcc-5.0.0-0.6.fc22, http://gcc.gnu.org/PR64803 zorba-3.0.0-10.20140621git152f8964c.fc22.src.rpm gcc bug - a wrong code issue fixed upstream and in gcc-5.0.0-0.6.fc22, http://gcc.gnu.org/PR64853 criu-1.4-1.fc22.src.rpm gcc bug - rejects valid code in C99 mode ([X ... Y] style initialization, a GNU extension). not fixed yet, http://gcc.gnu.org/PR64856 nntpgrab-0.7.2-9.fc22.src.rpm gcc bug - a wrong code in FSM jump threading a fix has been posted upstream, fixed in gcc-5.0.0-0.7.fc22 see http://gcc.gnu.org/PR64878 gnucap-0.35-14.fc22.src.rpm gcc bug - wrong code due to bug in IPA propagation fixed upstream and in gcc-5.0.0-0.7.fc22, http://gcc.gnu.org/PR64922 apron-0.9.10-23.fc22.src.rpm L-function-1.23-12.fc22.src.rpm mbox2eml-0.1.1-23.fc22.src.rpm ppl-1.1-6.fc22.src.rpm build error because g++ started to reject invalid code to reflect the C++ DR217 (default arguments in function templates in redeclarations). see http://gcc.gnu.org/PR15339 xiphos-4.0.0-3.fc22.src.rpm this package failed to build because the limit of the instantiation depth has been reached. abook-0.6.0-0.15.20140116git5840fce.fc22.src.rpm autofs-5.1.0-9.fc22.src.rpm bandwidthd-2.0.1-27.fc22.src.rpm bcache-tools-1.0.8-1.fc22.src.rpm bfast-0.7.0a-10.fc22.src.rpm bwm-ng-0.6-16.fc22.src.rpm cdogs-sdl-0.4-14.fc22.src.rpm covered-0.7.10-5.fc22.src.rpm crm114-0-8.14.20100106.fc22.src.rpm ebview-0.3.6.2-14.fc22.src.rpm eggdrop-1.6.21-8.fc22.src.rpm fbzx-2.10.0-5.fc22.src.rpm garden-1.0.8-12.fc22.src.rpm gcc-4.9.2-5.fc22.src.rpm gfal2-2.7.8-3.fc22.src.rpm gloox-1.0.10-4.fc22.src.rpm gnaural-1.0.20110606-3.fc22.src.rpm gnokii-0.6.31-10.fc22.src.rpm gsmartcontrol-0.8.7-6.fc22.src.rpm GtkAda-2.24.2-12.fc22.src.rpm gtk+extra-2.1.2-15.fc22.src.rpm isdn4k-utils-3.2-99.fc22.src.rpm jack-audio-connection-kit-1.9.10-1.fc22.src.rpm jfbterm-0.4.7-31.fc22.src.rpm kmplayer-0.11.3c-7.fc22.src.rpm libesedb-20120102-7.fc22.src.rpm libewf-20140608-1.fc22.src.rpm lpairs-1.0.4-14.fc22.src.rpm mapserver-6.2.2-1.fc22.src.rpm meterbridge-0.9.2-11.fc22.src.rpm mingw-nsis-2.46-13.fc22.src.rpm mirrormagic-2.0.2-16.fc22.src.rpm mona-1.4r15-4.fc22.src.rpm mono-2.10.8-7.fc21.src.rpm muffin-2.4.2-1.fc22.src.rpm nebula-0.2.3-10.fc22.src.rpm oidentd-2.0.8-15.fc22.src.rpm overgod-1.0-21.fc22.src.rpm pads-1.2-16.fc22.src.rpm php-pecl-memcache-3.0.8-6.fc22.src.rpm python-dmidecode-3.10.13-12.fc22.src.rpm qt-4.8.6-18.fc22.src.rpm ratbox-services-1.2.1-11.fc21.src.rpm reiserfs-utils-3.6.21-11.fc22.src.rpm sblim-sfcb-1.4.9-1.fc22.src.rpm sigar-1.6.5-0.12.git58097d9.fc22.src.rpm sipsak-0.9.6-18.fc22.src.rpm soundmodem-0.18-3.fc22.src.rpm tcpick-0.2.1-24.fc22.src.rpm teeworlds-0.6.3-1.fc22.src.rpm trousers-0.3.13-3.fc22.src.rpm udftools-1.0.0b3-28.fc22.src.rpm unicornscan-0.4.7-9.fc22.src.rpm vtun-3.0.3-11.fc22.src.rpm weplab-0.1.5-15.fc22.src.rpm wmmon-1.0-0.1.b2.20120606git575778a6.fc22.5.src.rpm yad-0.27.0-1.fc22.src.rpm build failure due to gnu11 change that entails different inline semantics; an undefined reference to a function. See the porting_to document for more details. avarice-2.12-7.fc22.src.rpm fawkes-0.5.0-19.fc22.src.rpm fdm-1.7-5.fc22.src.rpm libpuma-1.2-3.fc22.src.rpm masscan-1.0.3-2.fc22.src.rpm ncbi-blast+-2.2.30-1.fc22.src.rpm nifti2dicom-0.4.9-1.fc22.src.rpm ocp-0.1.20-9.fc22.2.src.rpm root-5.34.24-1.fc22.src.rpm trafficserver-5.0.1-1.fc22.src.rpm uboot-tools-2015.01-0.2.rc3.fc22.src.rpm vxl-1.17.0-15.fc22.src.rpm webkitgtk-2.4.8-1.fc22.src.rpm these packages are not prepared for gcc's version 5. E.g. fdm has: ifeq ($(shell (LC_ALL=C $(CC) -v 2>&1|awk '/gcc version 4/') || true), ) CPPFLAGS:= -I. -I- $(CPPFLAGS) else CPPFLAGS:= -iquote. $(CPPFLAGS) endif but the gcc version is not 4 anymore -> the -iquote option isn't used, so an error occurs later on. HepMC-2.06.09-7.fc22.src.rpm this one is not really clear, but the output of a program in the testsuite was in a floating-point notation rather than in a decimal notation, hence the test failed. appstream-0.7.3-1.fc22.src.rpm baloo-4.14.3-1.fc22.src.rpm notmuch-0.19-1.fc22.src.rpm perl-Search-Xapian-1.2.19.0-1.fc22.src.rpm recoll-1.20.1-1.fc22.src.rpm xapian-bindings-1.2.19-1.fc22.src.rpm zeitgeist-0.9.16-0.3.20140808.git.ce9affa.fc22.src.rpm these packages failed to build since they are using the Xapian library, which has been built with gcc 4.9, but they expect it to be compiled with gcc 5. Marek -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
