QtCreator crashes on 16.04

[Dylan Coakley]

void DBusMenuExporterPrivate::addAction(QAction*, int): Already tracking action "Follow Symbol Under Cursor" under id 173
Cannot start '/usr/lib/x86_64-linux-gnu/qt4/bin/qmake': No such file or directory
OpenGL Warning: glXCreatePbuffer not implemented by Chromium
OpenGL Warning: glXCreatePbuffer not implemented by Chromium
QOpenGLFramebufferObject: Unsupported framebuffer format.
Segmentation fault (core dumped)

[Matt Anderson (wmattanderson)]

Yes me too,

Qt Creator 3.5.1
Based on Qt 5.5.1 (GCC 5.2.1 20151129, 64 bit)

void DBusMenuExporterPrivate::addAction(QAction*, int): Already tracking action "Follow Symbol Under Cursor" under id 173
Segmentation fault (core dumped)

[Matt Anderson (wmattanderson)]

the "Follow Symbol Under Cursor" happens way before the segfault

backtrace
#0 0x00007fffcab5d7e8 in std::_Rb_tree<CPlusPlus::Name const*, std::pair<CPlusPlus::Name const* const, CPlusPlus::Declaration*>, std::_Select1st<std::pair<CPlusPlus::Name const* const, CPlusPlus::Declaration*> >, CPlusPlus::Name::Compare, std::allocator<std::pair<CPlusPlus::Name const* const, CPlusPlus::Declaration*> > >::_M_lower_bound(std::_Rb_tree_node<std::pair<CPlusPlus::Name const* const, CPlusPlus::Declaration*> >*, std::_Rb_tree_node<std::pair<CPlusPlus::Name const* const, CPlusPlus::Declaration*> >*, CPlusPlus::Name const* const&) () from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#1 0x00007fffcab592a8 in ?? () from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#2 0x00007fffcab55bb7 in ?? () from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#3 0x00007fffcab579f9 in ?? () from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#4 0x00007fffcab57b18 in ?? () from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#5 0x00007fffcab57913 in ?? () from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#6 0x00007fffcab57b71 in ?? () from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#7 0x00007fffcab57b18 in ?? () from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#8 0x00007fffcab57b71 in ?? () from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#9 0x00007fffcab57b71 in ?? () from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#10 0x00007fffcab57b71 in ?? () from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#11 0x00007fffcab5741d in ?? () from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#12 0x00007fffcab5741d in ?? () from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#13 0x00007fffcab57c53 in CPlusPlus::LookupScope::lookupType(CPlusPlus::Name const*) ()
   from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#14 0x00007fffcab5895f in ?? () from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#15 0x00007fffcab58e95 in CPlusPlus::LookupScope::lookup(CPlusPlus::Name const*) ()
   from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#16 0x00007fffcab488db in ?? () from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#17 0x00007fffcab49bee in ?? () from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#18 0x00007fffcab52e98 in CPlusPlus::CreateBindings::resolveTemplateArgument(CPlusPlus::Clone&, CPlusPlus::Subst&, CPlusPlus::LookupScope*, CPlusPlus::Template const*, CPlusPlus::TemplateNameId const*, unsigned int) ()
   from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#19 0x00007fffcab531a5 in CPlusPlus::CreateBindings::initializeSubst(CPlusPlus::Clone&, CPlusPlus::Subst&, CPlusPlus::LookupScope*, CPlusPlus::Template const*, CPlusPlus::TemplateNameId const*) ()
   from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#20 0x00007fffcab5654a in ?? () from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPl...

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Roel Standaert (s-roel)]

I also have frequent crashes due to a segmentation fault. My backtrace is a bit different:

(gdb) bt
#0 0x00007ffff619843c in _int_malloc (av=av@entry=0x7fff4c000020, bytes=bytes@entry=56) at malloc.c:3354
#1 0x00007ffff619a5a4 in __GI___libc_malloc (bytes=56) at malloc.c:2914
#2 0x00007ffff6783e78 in operator new(unsigned long) () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#3 0x00007fffc792079e in CPlusPlus::CloneName::cloneName(CPlusPlus::Name const*, CPlusPlus::Subst*) ()
   from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#4 0x00007fffc7920a0d in CPlusPlus::CloneType::visit(CPlusPlus::NamedType*) ()
   from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#5 0x00007fffc791e09f in CPlusPlus::Type::accept(CPlusPlus::TypeVisitor*) ()
   from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#6 0x00007fffc791f6ca in CPlusPlus::CloneType::cloneType(CPlusPlus::FullySpecifiedType const&, CPlusPlus::Subst*) ()
   from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#7 0x00007fffc791f8d1 in CPlusPlus::Clone::type(CPlusPlus::FullySpecifiedType const&, CPlusPlus::Subst*) ()
   from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#8 0x00007fffc7920a49 in CPlusPlus::CloneType::visit(CPlusPlus::NamedType*) ()
   from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#9 0x00007fffc791e09f in CPlusPlus::Type::accept(CPlusPlus::TypeVisitor*) ()
   from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#10 0x00007fffc791f6ca in CPlusPlus::CloneType::cloneType(CPlusPlus::FullySpecifiedType const&, CPlusPlus::Subst*) ()
   from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#11 0x00007fffc791f8d1 in CPlusPlus::Clone::type(CPlusPlus::FullySpecifiedType const&, CPlusPlus::Subst*) ()
   from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#12 0x00007fffc791fbfb in CPlusPlus::CloneName::visit(CPlusPlus::TemplateNameId const*) ()
   from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#13 0x00007fffc78ec32c in CPlusPlus::Name::accept(CPlusPlus::NameVisitor*) const ()
   from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#14 0x00007fffc7920729 in CPlusPlus::CloneName::cloneName(CPlusPlus::Name const*, CPlusPlus::Subst*) ()
   from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#15 0x00007fffc7920b3b in CPlusPlus::CloneName::visit(CPlusPlus::QualifiedNameId const*) ()
   from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#16 0x00007fffc78ec32c in CPlusPlus::Name::accept(CPlusPlus::NameVisitor*) const ()
   from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#17 0x00007fffc7920729 in CPlusPlus::CloneName::cloneName(CPlusPlus::Name const*, CPlusPlus::Subst*) ()
   from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#18 0x00007fffc7920b59 in CPlusPlus::CloneName::visit(CPlusPlus::QualifiedNameId const*) ()
   from /usr/lib/x86_64-linux-gnu/qtcreator/plugins/../libCPlusPlus.so.1
#19 0x00007fffc78ec32c in CPlusPlus::Name::accept(CPlusPlus::NameVisitor*) const ()
   from /usr/lib/x86_64-linux-gnu/qtcrea...

[Marius Elvert (elvertschneide)]

I have this bug as well. However, there's a workaround: start from the command-line with

qtcreator -noload Welcome

[Petra (gospodnetic)]

I have the same thing as Matt Anderson in #1
The workaround Marius Elvert #5 suggested doesn't work for me, the problem still persists.

[Roman Lotric (ulot)]

I have this bug too.
2 possible workarounds for me, but no one is perfect:
- disabling 3D acceleration if running Ubuntu 16.04 as guest in VirtualBox
- starting qtcreator as Marius (#5) suggests: qtcreator -noload Welcome

[bzero (bzero)]

I switch from unity to i3 and qt creator is mutch more stable now.