I'm on clang 7.0.1-rc2 and a freshly-cloned qt 5.12.0 ; it does the same on centos 7 and archlinux.
Best On Thu, Nov 29, 2018 at 3:28 PM Jean-Michaël Celerier < [email protected]> wrote: > Here's my stacktrace (finally had some time to do a rebuild) > > #0 QString::QString (this=0x23dda0, other=...) at > ../../../include/QtCore/../../../../qt5/qtbase/src/corelib/tools/qstring.h:958 > #1 QLinkedListNode<QString>::QLinkedListNode (this=0x23dd90, arg=...) at > ../../../include/QtCore/../../../../qt5/qtbase/src/corelib/tools/qlinkedlist.h:71 > #2 QLinkedList<QString>::detach_helper2 (this=0x7fffffffdad8, orgite=...) > at > ../../../include/QtCore/../../../../qt5/qtbase/src/corelib/tools/qlinkedlist.h:303 > #3 0x00000000002153ad in QLinkedList<QString>::detach (this=0x23dd90) at > ../../../include/QtCore/../../../../qt5/qtbase/src/corelib/tools/qlinkedlist.h:106 > #4 QLinkedList<QString>::end (this=0x23dd90) at > ../../../include/QtCore/../../../../qt5/qtbase/src/corelib/tools/qlinkedlist.h:209 > #5 Grammar::Grammar (this=<optimized out>) at > /opt/build-sdk/qt5/qtbase/src/tools/qlalr/lalr.cpp:188 > #6 main (argc=4, argv=<optimized out>) at > /opt/build-sdk/qt5/qtbase/src/tools/qlalr/main.cpp:103 > > I've only glanced quickly (read, less than 15 seconds) at the code but I > don't understand how it can work in any reasonable fashion: it seems that > it tries to construct a string (`QString Grammar::start` ) with the `end()` > of a container in lalr.cpp:188. But since it works in so many other > configurations I must be missing something somewhere. > > Best, > > ------- > Jean-Michaël Celerier > http://www.jcelerier.name > > > On Fri, Nov 9, 2018 at 10:01 AM René J. V. Bertin <[email protected]> > wrote: > >> Sérgio Martins wrote: >> >> > FWIW, I just tried -flto with clang-7.0 and gold-1.16 and can't >> > reproduce QTBUG-43556 anymore. >> >> Good to know, I use the "regular" ld v2.3.0 (~gold for other reasons I >> cannot >> really remember). >> >> In the FWIW register: does clang 7 continue the trend of being noticeably >> slower >> that its predecessor (about 15% for clang 6)? >> >> R. >> >> _______________________________________________ >> Interest mailing list >> [email protected] >> http://lists.qt-project.org/mailman/listinfo/interest >> >
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