[Bug 1824721] Re: g++-8 in disco is broken with libstdc++6 from gcc9 and libstdc++fs
Gah, typo: > so the linker finds the GCC 9 ones in libstdc++.so.6.0.25 and uses them That should have said libstdc++.so.6.0.26 - sorry for any confusion. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1824721 Title: g++-8 in disco is broken with libstdc++6 from gcc9 and libstdc++fs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gcc-8/+bug/1824721/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1824721] Re: g++-8 in disco is broken with libstdc++6 from gcc9 and libstdc++fs
The GCC 8 std::filesystem (and std::experimental::filesystem) symbols are in libstdc++fs.a which is only provided as a static library, so link order does matter. If you don't tell the linker to use it after the objects that require it, then no symbols from libstdc++fs.a will be used. In GCC 9 the std::experimental::filesystem symbols are still in libstdc++fs.a but the std::filesystem symbols are in libstdc++.so.6.0.26 now, but they're incompatible with the GCC 8 definitions. In your problematic link no symbols were used from libstdc++fs.a, so the linker finds the GCC 9 ones in libstdc++.so.6.0.25 and uses them, but that leads to crashes. It would have been possible to make the GCC 8 and 9 std::filesystem symbols mangle differently, and maybe I should do that for GCC 8.4, but for now the short answer is "C++17 support in GCC 8 is experimental, the onus is on you to link correctly". Since this problem is specific to Ubuntu, due to mixing gcc-8 and libstdc++.so.6.0.26, another possibility would be for Ubuntu's gcc-8 to reorder the linker arguments. If -lstdc++fs is given it could be moved to after the object files (but before the implicit -lstdc++ option that g++ adds). Another option would be to make g++ simply link to -lstdc++fs implicitly, as it does for -lstdc++. Unless the user adds -Wl,--whole- archive (and doesn't follow it with -Wl,--no-whole-archive) that should be harmless because the symbols in libstdc++fs.a will only be used if actually needed. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1824721 Title: g++-8 in disco is broken with libstdc++6 from gcc9 and libstdc++fs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gcc-8/+bug/1824721/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 274992] Re: Anti-phishing measure has incorrect prompts on dialog box
this is bug 271933 and https://bugzilla.redhat.com/show_bug.cgi?id=462392 so it isn't ubuntu-specific all reported occurrences are with x86_64. noone seems to be looking into it, even though the anti-phishing check is completely backwards and therefore does more harm than good. -- Anti-phishing measure has incorrect prompts on dialog box https://bugs.launchpad.net/bugs/274992 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 274992] Re: Anti-phishing measure has incorrect prompts on dialog box
*** This bug is a duplicate of bug 271933 *** https://bugs.launchpad.net/bugs/271933 ** This bug has been marked a duplicate of bug 271933 http://user:p...@site/ link asks ‘Is user the site you want to visit?’ -- Anti-phishing measure has incorrect prompts on dialog box https://bugs.launchpad.net/bugs/274992 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
