As many of you know, every year we (the GCC team) rebuild all the Fedora packages with the upcoming GCC, so as to reveal as many bugs as possible before we release the new version. As in the previous years, it is only performed on x86_64 only; we unfortunately lack the resources to deal with other arches. Ideally we'd conclude this mass rebuild *before* the new GCC has gotten into the buildroots; alas, this wasn't the case this year. I downloaded all Fedora packages on Jan 19, which should give you a sense of how long it takes to process all of this. There were 20892 packages overall (last year Fedora had 18811 packages). Using koji-is-noarch.py I removed all noarch packages from that, so that we only build archful packages to save time. That left me with 9329 packages to build. Of that, 8358 built fine with the new GCC (mostly gcc-8.0.1-0.3.fc28.x86_64.rpm but I also used a newer version from rawhide). The packages that failed to build with GCC 8 I rebuilt with GCC 7; if they failed with GCC 7, I took them off the list. The rest had to be analyzed; it was around 300 packages this time. (Last year it was ~198 packages. So more work this year.) I found several GCC bugs, most of which have already been fixed (actually all but PR84231). Fortran ABI has changed in GCC 8 (as it did in GCC 7). A nasty bug has been discovered in the new empty classes ABI code: we will need another mass rebuild to find out which package are affected. There have been a few bugs in code that deals with optimizing strlen; hopefully we won't find more of them. A lot of churn has been caused due to changes in the C++ compiler. Previously GCC was fairly forgiving about broken template code and would check almost nothing until the template was instantiated. In more recent releases parts of the template which don't depend on the template arguments get checked earlier. The standard says such code is ill-formed, but that no diagnostic is required i.e. the compiler is allowed to diagnose the problem, but not required to (because it could be expensive or difficult to check for some compilers). So the code was always broken, but now GCC tells you about it. I encourage the packagers to fix these bugs. With every release GCC gains new warnings which cause build failures in packages that use -Werror (not going to start a flame war about this here). This year the main offender was probably -Wformat-truncation. Due to time constrains I wasn't able to check every warning and decide if it's warranted or a false positive. As usual, there will be a "porting to" document to ease the transition to the new GCC. We already have https://gcc.gnu.org/gcc-8/porting_to.html, even though this document is still in flux. What follows is my analysis of what went wrong for the people who want to get an overview of the details. Note that my understanding of packages other than gcc is very limited, so it's entirely possible that I miscategorized some problems. Since during the time I was analyzing failures GCC 8 made it to the buildroots, it was no longer possible to use buildroots only different from each other by the GCC version, so some of the failures are caused by a new version of boost, glibc, etc. Thanks Jakub Jelinek for promply fixing bugs I reported (or caused :)) and Jonathan Wakely for his great help with anything related to C++. Let's get down to the nitty-gritty: apr-1.6.3-1.fc28.src.rpm undefined behavior -- signed overflow: 310 for (off = 1; off < LONG_MAX && off > 0; off *= 2) { 311 apr_strfsize(off, buf); 312 apr_strfsize(off + 1, buf); 313 apr_strfsize(off - 1, buf); 314 } where off is of type long int. mozjs38-38.8.0-8.fc28.src.rpm undefined behavior; building with -fsanitize=undefined: # cd /builddir/build/BUILD/mozilla-esr38/js/src/tests && /builddir/build/BUILD/mozilla-esr38/js/src/js/src/shell/js -f shell.js -f js1_5/shell.js -f js1_ 5/Regress/shell.js -f js1_5/Regress/regress-360969-06.js; cd - BUGNUMBER: 360969 STATUS: 2^17: global function /builddir/build/BUILD/mozilla-esr38/js/src/gc/Marking.cpp:669:10: runtime error: load of misaligned address 0x7f8be8070c9a for type 'void *', which requires 8 byte alignment 0x7f8be8070c9a: note: pointer points here 00 00 48 b9 30 d8 e5 e2 8b 7f 00 00 48 8b 49 70 48 8d 49 68 41 52 41 51 41 50 57 56 52 51 50 48 ^ /builddir/build/BUILD/mozilla-esr38/js/src/gc/Marking.cpp:671:13: runtime error: load of misaligned address 0x7f8be8070c9a for type 'void *', which requires 8 byte alignment 0x7f8be8070c9a: note: pointer points here 00 00 48 b9 30 d8 e5 e2 8b 7f 00 00 48 8b 49 70 48 8d 49 68 41 52 41 51 41 50 57 56 52 51 50 48 ^ ...and so on. This changed with https://gcc.gnu.org/r255387. With -fno-delete-null-poiner-checks this passes. libomxil-bellagio-0.9.3-15.fc27.src.rpm libX11-1.6.5-5.fc28.src.rpm error: '__builtin_strcpy' forming offset 2 is out of the bounds [0, 1] [-Werror=array-bounds] error: '__builtin_memcpy' forming offset [25, 72] is out of the bounds [0, 24] of object 'uuid' with type 'OMX_U32[3]' {aka 'long unsigned int[3]'} [-Werror=array-bounds] nasm-2.13.02-2.fc28.src.rpm error: 'pure' attribute on function returning 'void' [-Werror=attributes] GCC is more picky regarding attributes usage byzanz-0.3-0.20.fc28.src.rpm gdb-8.0.90.20180109-1.fc28.src.rpm gxneur-0.20.0-1.fc28.src.rpm insight-7.12.50.20170416-4.fc27.src.rpm libraqm-0.1.1-4.fc27.src.rpm lightdm-gtk-2.0.3-4.fc28.src.rpm open62541-0.2-1.fc28.src.rpm openvas-scanner-5.1.1-4.fc27.src.rpm purple-telegram-1.3.1-5.fc27.src.rpm stlink-1.4.0-2.fc28.src.rpm v8-314-3.14.5.10-7.fc27.src.rpm yp-tools-4.2.2-4.fc27.src.rpm error: cast between incompatible function types from X to Y [-Werror=cast-function-type] atlascpp-0.6.4-2.fc27.src.rpm libyui-3.3.3-1.fc28.src.rpm pulseview-0.4.0-5.fc27.src.rpm error: catching polymorphic type 'class Atlas::Objects::DefaultLoadingException' by value [-Werror=catch-value=] and similar ceph-12.2.2-1.fc28.src.rpm leatherman-1.3.0-4.fc28.src.rpm mellowplayer-3.2.0-1.fc28.src.rpm spirv-tools-2016.7-0.2.20171023.git5834719.fc28.src.rpm squid-4.0.22-1.fc28.src.rpm error: 'void* memset(void*, int, size_t)' clearing an object of type 'struct std::atomic<unsigned int>' with no trivial copy-assignment; use value-initialization instead [-Werror=class-memaccess] and similar grip-3.6.1-2.fc28.src.rpm nss-3.34.0-2.fc28.src.rpm error: '%s' directive writing up to 511 bytes into a region of size 256 [-Werror=format-overflow=] error: '__builtin___sprintf_chk' may write a terminating nul past the end of the destination [-Werror=format-overflow=] bip-0.8.9-14.fc27.src.rpm e2tools-0.0.16-29.fc27.src.rpm fcoe-utils-1.0.32-3.fc27.src.rpm frozen-bubble-2.2.1-0.22.beta1.fc28.src.rpm giada-0.14.4-1.fc28.src.rpm infinipath-psm-3.3-22_g4abbc60_open.5.fc28.src.rpm libfaketime-0.9.6-6.fc27.src.rpm liboping-1.10.0-3.fc27.src.rpm libpfm-4.9.0-2.fc28.src.rpm libpsm2-10.3.8-3.fc28.src.rpm mdadm-4.0-5.fc27.src.rpm memcached-1.5.4-1.fc28.src.rpm openzwave-1.5.0-0.20170724gitde1c0e6.fc27.src.rpm target-isns-0.6.2-5.fc27.src.rpm usbip-4.14.11-1.fc28.src.rpm wlroots-0.0.1-0.7.20180106git03faf17.fc28.src.rpm error: '%s' directive output may be truncated writing up to 1023 bytes into a region of size 1022 [-Werror=format-truncation=] none of these should be a false positive flatbuffers-1.8.0-2.fc28.src.rpm error: type qualifiers ignored on cast result type [-Werror=ignored-qualifiers] libkcapi-1.0.3-2.fc28.src.rpm error: this statement may fall through [-Werror=implicit-fallthrough=] python37-3.7.0-0.2.a4.fc28.src.rpm error: implicit declaration of function ‘crypt’ [-Werror=implicit-function-declaration] is probably the reason why this failed ucx-1.2.2-1.fc28.src.rpm error: alignment 1 of 'struct uct_ud_send_skb_inl' is less than 64 [-Werror=packed-not-aligned] camotics-1.1.1-9.fc27.src.rpm usbguard-0.7.1-2.fc28.src.rpm error: unnecessary parentheses in declaration of 'assert_arg' [-Werror=parentheses] -Wparentheses has been enhanced, it detects redundant () e.g. here typedef int (Private::*Zero); edk2-20171011git92d07e4-2.fc28.src.rpm kernel-4.15.0-0.rc8.git0.1.fc28.src.rpm error: passing argument 2 to restrict-qualified parameter aliases with argument 4 [-Werror=restrict] select(1, &in, NULL, &in, NULL); and error: 'memcpy' accessing between 17 and 2147483631 bytes at offsets 16 and 16 overlaps between 17 and 2147483631 bytes at offset 16 [-Werror=restrict] memcpy(copy_dst + 16, copy_src + 16, (size_t)(i - 16)); newscache-1.2-0.27.rc6.fc27.src.rpm a configure test uses this program: class Exc { public: Exc() {} ~Exc() {} }; void t() { throw Exc(); } main() { try { t(); } catch(Exc &e) { } } and it fails due to -Wreturn-type; add int to main to fix it. scsi-target-utils-1.0.70-4.fc28.src.rpm error: 'strncpy' output may be truncated copying 4 bytes from a string of length 4 [-Werror=stringop-truncation] and similar florist-2011-22.fc27.src.rpm gprbuild: *** compilation phase failed This is gcc-gnat related. Didn't investigate further. dssp-2.2.1-16.fc27.src.rpm freeorion-0.4.7.1-2.fc28.src.rpm libcutl-1.10.0-10.fc27.src.rpm rospack-2.0.14-18.fc27.src.rpm fatal error: boost/tr1/tuple.hpp: No such file or directory error: 'boost::system::posix_error' has not been declared error: boost regex is not found fatal error: boost/tr1/unordered_set.hpp: No such file or directory boost-related, so didn't investigate further. votca-xtp-1.4.1-1.fc28.src.rpm So boost has been updated to 1.66. This update broke it; specifically this change in /usr/include/boost/format/feed_args.hpp (comes from boost-devel-1.66.0-0.1.fc28.x86_64): template< class Ch, class Tr, class T> void call_put_last(::std:: basic_ostream<Ch, Tr> & os, const void* x) { - put_last(os, *(T*)x); + put_last(os, *(static_cast<T const *>(x))); } caused error: no match for 'operator<<' (operand types are 'std::basic_ostream<char>' and 'const votca::tools::Property') rubygem-gtk2-3.2.1-2.fc28.src.rpm rubygem-rkerberos-0.1.5-8.fc28.src.rpm rubygem-rugged-0.26.0-4.fc28.src.rpm this can be boiled down to: const int a = 1, b; __attribute__((__error__("bar"))) int foo (); int invoke_callback (void) { return __builtin_choose_expr (__builtin_constant_p (a), foo (), b); } "a" is now constant since https://gcc.gnu.org/r254930, so the error triggers. bcc-0.4.0-3.fc28.src.rpm csound-6.03.2-13.fc26.src.rpm embree-2.17.0-2.fc28.src.rpm gcin-2.8.5-2.fc28.src.rpm libgda-5.2.2-11.fc24.src.rpm lookup-2.1-8.fc27.src.rpm lv2-x42-plugins-0.3.0-0.3.20170428.fc27.src.rpm mozc-2.20.2677.102-7.fc28.src.rpm python-thriftpy-0.3.9-5.fc27.src.rpm qcad-3.19.1.0-2.fc28.src.rpm zenon-0.8.2-9.fc28.src.rpm These are probably package bugs. I found e.g. https://github.com/iovisor/bcc/issues/1513 https://github.com/facebook/flow/issues/5270 https://github.com/wbolster/happybase/issues/168 ustl-2.5-4.fc27.src.rpm gcc8 now knows "__is_assignable" and that clashes with packages's own version liblsl-1.12.0-1.fc28.src.rpm error: 'cerr' is not a member of 'std' 212 std::cerr << "Error during close_if_open (thread id: " << boost::this_thread::get_id() << "): " << e.what() << std::endl; 213 ^~~~ 214 /builddir/build/BUILD/liblsl-1.12.0/src/socket_utils.h:60:9: note: 'std::cerr' is defined in header '<iostream>'; did you forget to '#include <iostream>'? so I'd think a package bug alliance-5.1.1-11.20160506gitd8c05cd.fc28.src.rpm dvipdf not found; seems unrelated to gcc arachne-pnr-0.1-0.3.20170628git7e135ed.fc28.src.rpm /usr/include/c++/8/bits/stl_tree.h:452:21: error: static assertion failed: comparison object must be invocable with two arguments of key type libstdc++ is more strict, see https://gcc.gnu.org/PR48101 analitza-17.12.1-1.fc28.src.rpm grantlee-qt5-5.1.0-6.fc27.src.rpm kdevelop-php-5.2.1-1.fc28.src.rpm kdevelop-python-5.2.1-1.py3.fc28.src.rpm liblxqt-0.11.1-7.fc27.src.rpm marble-17.12.1-1.fc28.src.rpm qt5-qtdeclarative-5.10.0-1.fc28.src.rpm qt5-qtlocation-5.10.0-1.fc28.src.rpm qt5-qtremoteobjects-5.10.0-1.fc28.src.rpm renderdoc-0.91-4.fc28.src.rpm sddm-0.17.0-1.fc28.src.rpm spectacle-17.12.1-1.fc28.src.rpm internal compiler error: Segmentation fault https://gcc.gnu.org/PR82882 fixed upstream and in gcc-8.0.1-0.5.fc28 sng-1.1.0-5.fc27.src.rpm internal compiler error: in tree_to_shwi, at tree.h:4268 https://gcc.gnu.org/PR83896 fixed upstream and in gcc-8.0.1-0.5.fc28 libodb-pgsql-2.4.0-8.fc27.src.rpm libodb-sqlite-2.4.0-8.fc27.src.rpm mp-3.1.0-14.20161124git1f3980.fc28.src.rpm internal compiler error: unexpected expression '(void (odb::details::shared_ptr<odb::pgsql::insert_statement>::*)())(0)' of kind cast_expr https://gcc.gnu.org/PR83974 fixed upstream and in gcc-8.0.1-0.6.fc28 arpage-0.3.3-24.fc28.src.rpm atkmm-2.24.2-5.fc27.src.rpm bakery-2.6.3-19.fc27.src.rpm ccgo-0.3.6.5-7.fc28.src.rpm cclive-0.9.3-19.fc27.src.rpm clipsmm-0.3.5-1.fc28.src.rpm eiciel-0.9.12.1-1.fc28.src.rpm flowcanvas-0.7.1-27.fc27.src.rpm gconfmm26-2.28.3-14.fc27.src.rpm gdlmm-3.7.3-10.fc27.src.rpm gimagereader-3.2.3-3.fc27.src.rpm glibmm24-2.54.1-1.fc28.src.rpm gnome-system-monitor-3.26.0-1.fc28.src.rpm gobby-0.4.13-13.fc27.src.rpm goocanvasmm-0.15.4-18.fc27.src.rpm goocanvasmm2-1.90.11-5.fc27.src.rpm gparted-0.30.0-1.fc28.src.rpm grub-customizer-5.0.6-6.fc28.src.rpm gsmartcontrol-1.1.3-1.fc28.src.rpm gtkglextmm-1.2.0-27.fc27.src.rpm gtkmm24-2.24.5-4.fc27.src.rpm gtkmm30-3.22.2-1.fc28.src.rpm gtksourceviewmm-2.10.3-13.fc27.src.rpm gtksourceviewmm3-3.18.0-5.fc27.src.rpm gtkspellmm30-3.0.5-4.fc27.src.rpm harmonyseq-0.16-24.fc27.src.rpm jalv-1.6.0-3.fc27.src.rpm lastfmlib-0.4.0-16.fc27.src.rpm libgdamm-4.99.11-4.fc27.src.rpm libglademm24-2.6.7-18.fc27.src.rpm libgnomecanvasmm26-2.26.0-18.fc27.src.rpm libnotifymm-0.7.0-10.fc27.src.rpm libsexymm-0.1.9-24.fc27.src.rpm libvtemm-0.25.0-14.fc27.src.rpm libxml++-2.40.1-5.fc27.src.rpm lifeograph-1.4.2-4.fc27.src.rpm lv2-abGate-1.1.3-17.fc27.src.rpm lv2-avw-plugins-0.0.8-14.fc27.src.rpm lv2-ll-plugins-0.2.8-21.fc27.src.rpm lv2-newtonator-0.6.0-11.fc27.src.rpm lv2-triceratops-0.1.7-9.fc27.src.rpm mate-system-monitor-1.19.1-1.fc28.src.rpm mlpack-2.2.5-2.fc28.src.rpm nitrogen-1.6.1-3.fc27.src.rpm paman-0.9.4-19.fc27.src.rpm paprefs-0.9.10-14.fc27.src.rpm pavucontrol-3.0-10.fc27.src.rpm pavumeter-0.9.3-19.fc27.src.rpm repsnapper-2.4-0.5.a3.fc27.src.rpm seq24-0.9.3-4.fc27.src.rpm synfigstudio-1.2.1-1.fc28.src.rpm workrave-1.10.20-1.fc28.src.rpm xfce4-hardware-monitor-plugin-1.5.0-6.fc27.src.rpm z3-4.6.0-1.fc28.src.rpm these are actually package bugs, see my earlier note. also see https://gcc.gnu.org/PR84012 and https://gcc.gnu.org/gcc-7/porting_to.html#hypothetical-instantiation uhd-3.10.1.0-6.fc27.src.rpm error: cannot bind non-const lvalue reference of type 'const char*&' to an rvalue of type 'const char*' GCC 8 rejects this valid code https://gcc.gnu.org/PR84231 not fixed yet xen-4.10.0-2.fc28.src.rpm error: only zero initializers are allowed in section '.bss.page_aligned.const' a GCC bug, we were being too strict https://gcc.gnu.org/PR84237 fixed upstream and in gcc-8.0.1-0.13.fc28 chromium-63.0.3239.108-1.fc28.src.rpm the nasty ABI bug I mentioned earlier, we will need to do another mass rebuild to see what other packages are affected. This is https://gcc.gnu.org/PR84286 but that should be a duplicate of https://gcc.gnu.org/PR84502, which was fixed upstream. Also see https://bugzilla.redhat.com/show_bug.cgi?id=1546255 python-mapnik-0.1-26.20170614git1635afe.fc28.src.rpm internal compiler error: in finish_member_declaration, at cp/semantics.c:3011 https://gcc.gnu.org/PR84296 fixed upstream and in gcc-8.0.1-0.13.fc28 casync-2-4.fc28.src.rpm wrong-code with -ffast-math https://gcc.gnu.org/PR84309 fixed upstream and in gcc-8.0.1-0.14.fc28 hunspell-1.6.2-1.fc28.src.rpm wrong-code with optimizing strlen https://gcc.gnu.org/PR84339 fixed upstream and in gcc-8.0.1-0.14.fc28 scantailor-0.9.11.1-19.fc27.src.rpm error: 'mcalc::Mat<T>::Mat(mcalc::AbstractAllocator<T>*, const T*, int, int) [with T = double]' is private within this context rejected since https://gcc.gnu.org/r255780 most likely a package bug asio-1.10.8-6.fc27.src.rpm mame-0.193-1.fc28.src.rpm tomahawk-0.8.4-17.fc27.src.rpm error: ambiguous overload for 'operator==' https://gcc.gnu.org/PR84283 fixed upstream and in gcc-8.0.1-0.13.fc28 systemd-bootchart-233-1.fc28.src.rpm see https://bugzilla.redhat.com/show_bug.cgi?id=1543912 a bug, but not in GCC probably arts-1.5.10-36.fc27.src.rpm bliss-0.73-5.fc27.src.rpm ETL-1.2.1-1.fc28.src.rpm nqc-3.1.7-21.fc27.src.rpm qlandkartegt-1.8.1-14.fc28.src.rpm stratagus-2.2.7-11.fc27.src.rpm tcpreen-1.4.4-16.fc27.src.rpm xmoto-0.5.11-13.fc27.src.rpm error: unable to find string literal operator it needs a space before __FILE__ it's invalid code, although GCC 7 used to give a warning not an error https://gcc.gnu.org/r254443 started rejecting ""__FILE__"" Jon opened https://gcc.gnu.org/PR84517, we might downgrade this to a warning again. deepin-api-3.1.14-2.fc28.src.rpm undefined reference to symbol 'g_time_zone_adjust_time' I don't think it's a gcc bug. cargo-0.24.0-1.fc28.src.rpm containerd-1.0.0-1.fc28.src.rpm deepin-dbus-generator-0.6.6-1.fc28.src.rpm firefox-58.0.2-1.fc28.src.rpm krb5-1.16-2.src.rpm libguestfs-1.37.35-2.fc28.src.rpm maxima-5.41.0-4.fc28.src.rpm netcdf-4.4.1.1-6.fc27.src.rpm nvml-1.3-3.fc27.src.rpm proftpd-1.3.6-10.fc28.src.rpm python33-3.3.7-2.fc28.src.rpm smb4k-2.0.2-1.fc28.src.rpm I'm not sure about these failures, but they don't seem to be GCC bugs. firefox has same issue as cargo, they built fine in koji proftpd: timeouts in tests, but in koji it's fine maxima: doesn't invoke gcc/g++/gfortran at all? python33: two test fail: smtplib.SMTPServerDisconnected: Connection unexpectedly closed networking issues in mock? krb5: keyctl_join_session_keyring: Operation not permitted probably a network issue again ahven-2.6-9.fc28.src.rpm gela-asis-0.3.2-9.fc27.src.rpm PragmARC-20130728-14.fc27.src.rpm zeromq-ada-2.1.0-23.24032011git.fc27.src.rpm zlib-ada-1.4-0.18.20120830CVS.fc27.src.rpm gnatmake: project files are no longer supported by gnamake; use gprbuild instead Ada; didn't investigate postgresql-10.1-4.fc28.src.rpm xfsprogs-4.14.0-1.fc28.src.rpm glibc gained copy_file_range, a declaration is in unistd.h so we get conflicting declarations not gcc related claws-mail-3.15.1-5.fc28.src.rpm A configure test fails: can't find encrypt() with -lcrypt. In F27, it's provided by libcrypt-nss but that isn't in rawhide. not gcc related PyPAM-0.5.0-33.fc28.src.rpm ImportError: No module named PAM my notes say "missing -ldl" but I'm not actually sure what that meant hyperscan-4.6.0-1.fc28.src.rpm ntop-5.0.1-14.fc28.src.rpm orthanc-1.3.0-4.fc28.src.rpm SimGear-2017.3.1-1.fc28.src.rpm tellico-2.3.12-4.fc27.src.rpm No matching package to install: 'tcp_wrappers-devel' and similar. Not gcc related. arm-none-eabi-gcc-cs-7.1.0-5.fc27.src.rpm astrometry-0.73-1.fc28.src.rpm clang-5.0.1-2.fc28.src.rpm esc-1.1.1-1.fc27.src.rpm gdcm-2.6.5-19.fc28.src.rpm icecat-52.5.3-3.fc28.src.rpm InsightToolkit-4.9.1-7.fc27.src.rpm java-9-openjdk-9.0.1.11-4.fc28.src.rpm llvm3.9-3.9.1-11.fc27.src.rpm openblas-0.2.20-3.fc28.src.rpm pcl-1.8.0-13.fc28.src.rpm QuantLib-1.10.1-1.fc28.src.rpm supertuxkart-0.9.3-2.fc28.1.src.rpm texlive-2016-39.20160520.fc28.src.rpm vtk-7.1.1-9.fc28.src.rpm warsow-2.1-7.fc27.src.rpm these packages require a huge amount of memory and none of my builder boxes had enough memory to build these. gqrx-2.9-1.fc28.src.rpm gr-air-modes-0-0.56.20160831git3bad1f5d.fc27.src.rpm gr-iqbal-0.37.2-27.fc27.src.rpm gr-osmosdr-0.1.4-6.20170221git2a2236cc.fc27.src.rpm gr-rds-0-0.30.20150513git201f32b.fc27.src.rpm kdepim-runtime-17.12.1-1.fc28.src.rpm mongo-c-driver-1.9.2-2.fc28.src.rpm sumwars-0.5.8-13.fc27.src.rpm teamgit-0.0.12-21.20130626.fc27.src.rpm vegastrike-0.5.1-31.r1.fc27.src.rpm xsd-4.0.0-20.fc28.src.rpm nothing provides libboost_system.so.1.64.0()(64bit) needed by gnuradio-3.7.11-7.fc28.x86_64 not gcc related COPASI-4.22.170-5.fc28.src.rpm octave-audio-1.1.4-18.fc26.src.rpm octave-communications-1.2.1-5.fc26.src.rpm octave-control-3.0.0-3.fc26.src.rpm pfstools-2.0.6-3.fc27.src.rpm qtoctave-0.10.1-19.fc23.src.rpm R-affy-1.54.0-3.fc27.src.rpm R-msm-1.6.4-3.fc27.src.rpm vfrnav-20160429-11.fc28.src.rpm libgfortran bumped SONAME again, and clearly not everything has been rebuilt yet. It might be as of now. ardour4-4.7.0-9.fc28.src.rpm --freedesktop requires itstool > 2.0.0 to translate files. unsure, but probably failed with GCC 7 too gcl-2.6.12-7.fc26.src.rpm Error: ERROR "The assertion !clear_protect_memory(memory) on line 580 of sfaslelf.c in function fasload failed" unsure, but probably failed with GCC 7 too lordsawar-0.3.0-4.fc25.src.rpm error: ISO C++ forbids comparison between pointer and integer [-fpermissive] unsure, but probably failed with GCC 7 too SDL_sound-1.0.3-19.fc27.src.rpm https://github.com/Homebrew/legacy-homebrew/issues/40872 unsure, but probably failed with GCC 7 too openfst-1.6.3-1.fc27.src.rpm saga-2.2.7-9.fc28.src.rpm configure: error: cannot import Python module "distutils". Please check your Python installation. The error was: DEPRECATION WARNING: python2 invoked with /usr/bin/python. seems to be about the python2 to python3 switch. Doesn't seem to be gcc related at all. rusers-0.17-87.fc27.src.rpm samba-4.7.4-0.fc28.src.rpm rpcgen not found glibc related? PyMca-4.7.3-8.fc26.src.rpm fatal error: xlocale.h: No such file or directory xlocale.h has been renamed upstream in glibc. See: Rename xlocale.h to bits/types/__locale_t.h https://sourceware.org/git/?p=glibc.git;a=commit;h=f0be25b6336db7492e47d2e8e72eb8af53b5506d https://sourceware.org/git/?p=glibc.git;a=commit;h=af85385f311c574590381f7897461643f8a2fe6f NetworkManager-ssh-1.2.7-1.fc28.src.rpm NetworkManager-strongswan-1.4.2-1.fc28.src.rpm not a GCC 8 problem; see <https://github.com/danfruehauf/NetworkManager-ssh/issues/74> libsbml-5.16.0-2.fc28.src.rpm libsedml-0.4.3-6.fc28.src.rpm R-affyio-1.46.0-3.fc27.src.rpm R-backports-1.1.2-1.fc28.src.rpm R-base64enc-0.1.3-1.fc28.src.rpm R-biglm-0.9.1-10.fc27.src.rpm R-Biobase-2.36.2-3.fc27.src.rpm R-bitops-1.0.6-7.fc27.src.rpm R-BufferedMatrix-1.40.0-3.fc27.src.rpm R-BufferedMatrixMethods-1.40.0-3.fc27.src.rpm R-Cairo-1.5.9-2.fc28.src.rpm R-caTools-1.17.1-6.fc27.src.rpm R-commonmark-1.4-1.fc28.src.rpm R-curl-3.0-1.fc28.src.rpm R-digest-0.6.12-3.fc27.src.rpm R-expm-0.999.2-3.fc27.src.rpm R-filehash-2.4.1-1.fc28.src.rpm R-GenomicAlignments-1.12.1-3.fc27.src.rpm R-GenomicRanges-1.28.3-3.fc27.src.rpm R-highlight-0.4.7.1-4.fc27.src.rpm R-htmltools-0.3.6-2.fc28.src.rpm R-httpuv-1.3.5-2.fc28.src.rpm R-IRanges-2.10.1-3.fc27.src.rpm R-jpeg-0.1.8-3.fc28.src.rpm R-jsonlite-1.5-5.fc28.src.rpm rkward-0.6.5-11.fc28.src.rpm R-littler-0.3.3-1.fc28.src.rpm R-maanova-1.46.1-3.fc27.src.rpm R-markdown-0.8-3.fc28.src.rpm R-matrixStats-0.52.2-3.fc27.src.rpm R-mime-0.5-1.fc28.src.rpm R-multtest-2.32.0-3.fc27.src.rpm R-pbdZMQ-0.2.6-4.fc28.src.rpm R-plyr-1.8.4-4.fc28.src.rpm R-png-0.1.7-3.fc28.src.rpm R-preprocessCore-1.38.1-3.fc27.src.rpm R-qtl-1.41.6-3.fc27.src.rpm R-Rcpp-0.12.14-1.fc28.src.rpm R-RCurl-1.95.4.8-3.fc27.src.rpm R-reshape2-1.4.3-1.fc28.src.rpm R-RInside-0.2.14-5.fc28.src.rpm R-rlecuyer-0.3.4-3.fc27.src.rpm R-ROC-1.46.0-5.fc27.src.rpm R-RODBC-1.3.15-3.fc27.src.rpm R-Rsolid-0.9.31-22.fc27.src.rpm R-RSQLite-1.1.2-4.fc27.src.rpm R-rtracklayer-1.36.3-3.fc27.src.rpm R-S4Vectors-0.14.3-3.fc27.src.rpm R-sp-1.2.5-4.fc28.src.rpm R-statmod-1.4.20-7.fc27.src.rpm R-testthat-1.0.2-3.fc27.src.rpm R-tikzDevice-0.10.1-1.fc28.src.rpm R-uuid-0.1.2-2.fc28.src.rpm R-V8-1.5-2.fc28.src.rpm R-wavethresh-4.6.8-3.fc27.src.rpm R-XML-3.98.1.7-3.fc27.src.rpm R-XVector-0.16.0-3.fc27.src.rpm R-yaml-2.1.16-1.fc28.src.rpm these all say exec: INSTALL: not found Certainly doesn't seem to be GCC 8 related. 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