Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007f48c4273584 in clang::NestedNameSpecifier::isDependent() const () from /usr/lib/qtcreator/../libclangAST.so.8
[Current thread is 1 (Thread 0x7f48b938c700 (LWP 27767))]
(gdb) bt
#0  0x00007f48c4273584 in clang::NestedNameSpecifier::isDependent() const () from /usr/lib/qtcreator/../libclangAST.so.8
#1  0x00007f48c468e10b in clang::Sema::computeDeclContext(clang::CXXScopeSpec const&, bool) () from /usr/lib/qtcreator/../libclangSema.so.8
#2  0x00007f48c4690a2e in clang::Sema::ActOnCXXEnterDeclaratorScope(clang::Scope*, clang::CXXScopeSpec&) () from /usr/lib/qtcreator/../libclangSema.so.8
#3  0x00007f48c3e4fcab in ?? () from /usr/lib/qtcreator/../libclangParse.so.8
#4  0x00007f48c3e6bb3b in clang::Parser::ParseDirectDeclarator(clang::Declarator&) () from /usr/lib/qtcreator/../libclangParse.so.8
#5  0x00007f48c3e5fef7 in clang::Parser::ParseDeclaratorInternal(clang::Declarator&, void (clang::Parser::*)(clang::Declarator&)) () from /usr/lib/qtcreator/../libclangParse.so.8
#6  0x00007f48c3e66404 in clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&, clang::DeclaratorContext, clang::SourceLocation*, clang::Parser::ForRangeInit*) () from /usr/lib/qtcreator/../libclangParse.so.8
#7  0x00007f48c3eef376 in clang::Parser::ParseDeclOrFunctionDefInternal(clang::Parser::ParsedAttributesWithRange&, clang::ParsingDeclSpec&, clang::AccessSpecifier) () from /usr/lib/qtcreator/../libclangParse.so.8
#8  0x00007f48c3eefd32 in ?? () from /usr/lib/qtcreator/../libclangParse.so.8
#9  0x00007f48c3ef66f1 in clang::Parser::ParseExternalDeclaration(clang::Parser::ParsedAttributesWithRange&, clang::ParsingDeclSpec*) () from /usr/lib/qtcreator/../libclangParse.so.8
#10 0x00007f48c3e76fc7 in clang::Parser::ParseInnerNamespace(llvm::SmallVector<clang::Parser::InnerNamespaceInfo, 4u> const&, unsigned int, clang::SourceLocation&, clang::ParsedAttributes&, clang::BalancedDelimiterTracker&) () from /usr/lib/qtcreator/../libclangParse.so.8
#11 0x00007f48c3e77cb9 in clang::Parser::ParseNamespace(clang::DeclaratorContext, clang::SourceLocation&, clang::SourceLocation) () from /usr/lib/qtcreator/../libclangParse.so.8
#12 0x00007f48c3e694cd in clang::Parser::ParseDeclaration(clang::DeclaratorContext, clang::SourceLocation&, clang::Parser::ParsedAttributesWithRange&) () from /usr/lib/qtcreator/../libclangParse.so.8
#13 0x00007f48c3ef671b in clang::Parser::ParseExternalDeclaration(clang::Parser::ParsedAttributesWithRange&, clang::ParsingDeclSpec*) () from /usr/lib/qtcreator/../libclangParse.so.8
#14 0x00007f48c3e76fc7 in clang::Parser::ParseInnerNamespace(llvm::SmallVector<clang::Parser::InnerNamespaceInfo, 4u> const&, unsigned int, clang::SourceLocation&, clang::ParsedAttributes&, clang::BalancedDelimiterTracker&) () from /usr/lib/qtcreator/../libclangParse.so.8
#15 0x00007f48c3e77cb9 in clang::Parser::ParseNamespace(clang::DeclaratorContext, clang::SourceLocation&, clang::SourceLocation) () from /usr/lib/qtcreator/../libclangParse.so.8
#16 0x00007f48c3e694cd in clang::Parser::ParseDeclaration(clang::DeclaratorContext, clang::SourceLocation&, clang::Parser::ParsedAttributesWithRange&) () from /usr/lib/qtcreator/../libclangParse.so.8
#17 0x00007f48c3ef671b in clang::Parser::ParseExternalDeclaration(clang::Parser::ParsedAttributesWithRange&, clang::ParsingDeclSpec*) () from /usr/lib/qtcreator/../libclangParse.so.8
#18 0x00007f48c3ef736a in clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&) () from /usr/lib/qtcreator/../libclangParse.so.8
#19 0x00007f48c3e45818 in clang::ParseAST(clang::Sema&, bool, bool) () from /usr/lib/qtcreator/../libclangParse.so.8
#20 0x00007f48c54624f6 in clang::FrontendAction::Execute() () from /usr/lib/qtcreator/../libclangFrontend.so.8
#21 0x00007f48c549ef72 in clang::PrecompiledPreamble::Build(clang::CompilerInvocation const&, llvm::MemoryBuffer const*, clang::PreambleBounds, clang::DiagnosticsEngine&, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>, std::shared_ptr<clang::PCHContainerOperations>, bool, clang::PreambleCallbacks&) ()
   from /usr/lib/qtcreator/../libclangFrontend.so.8