[Bug c++/68653] New: [6 Regression] ICE: in nonnull_arg_p, at tree.c:13853

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68653

            Bug ID: 68653
           Summary: [6 Regression] ICE: in nonnull_arg_p, at tree.c:13853
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: trippels at gcc dot gnu.org
                CC: mark at gcc dot gnu.org
  Target Milestone: ---

x4 duchain # g++ -march=amdfam10 -c declarationbuilder.ii
x4 duchain # g++ -march=amdfam10 -c -Wall declarationbuilder.ii
/var/tmp/portage/dev-util/kdevelop-9999/work/kdevelop-9999/languages/qmljs/duchain/declarationbuilder.cpp:
In instantiation of ‘void DeclarationBuilder::declareParameters(Node*,
QStringRef Node::*) [with Node = QmlJS::AST::FormalParameterList]’:
/var/tmp/portage/dev-util/kdevelop-9999/work/kdevelop-9999/languages/qmljs/duchain/declarationbuilder.cpp:259:83:
  required from here
/var/tmp/portage/dev-util/kdevelop-9999/work/kdevelop-9999/languages/qmljs/duchain/declarationbuilder.cpp:207:49:
internal compiler error: in nonnull_arg_p, at tree.c:13853

Probably started with r227649.
Reducing..