[Bug c++/68364] New: ICE in tree_check()

[avi@cloudius-systems.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68364

            Bug ID: 68364
           Summary: ICE in tree_check()
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: avi@cloudius-systems.com
  Target Milestone: ---

Created attachment 36715
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36715&action=edit
Test case (derived from ScyllaDB; AGPL)

g++6 (GCC) 6.0.0 20151113 (experimental)
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

5f3001a9d4fa4beb4418b8e7465a0f0f7349eaea

In file included from ./exceptions/exceptions.hh:45:0,
                 from ./compress.hh:24,
                 from ./schema.hh:37,
                 from ./cql3/selection/selectable.hh:45,
                 from ./cql3/selection/writetime_or_ttl.hh:45,
                 from build/release/gen/cql3/CqlParser.hpp:63,
                 from build/release/gen/cql3/CqlParser.cpp:44:
./db/write_type.hh: In function ‘std::ostream& db::operator<<(std::ostream&,
const db::write_type&)’:
./db/write_type.hh:58:19: internal compiler error: tree check: expected
integer_cst, have nop_expr in get_len, at tree.h:5167
         case write_type::SIMPLE: os << "SIMPLE"; break;
                   ^~~~~~

0xf366dc tree_check_failed(tree_node const*, char const*, int, char const*,
...)
        ../../gcc/tree.c:9587
0x825308 tree_check
        ../../gcc/tree.h:3212
0x825308 wi::extended_tree<192>::get_len() const
        ../../gcc/tree.h:5167
0x825308 wi::int_traits<generic_wide_int<wi::extended_tree<192> >
>::decompose(long*, unsigned int, generic_wide_int<wi::extended_tree<192> >
const&)
        ../../gcc/wide-int.h:898
0x825308 wide_int_ref_storage<generic_wide_int<wi::extended_tree<192> > >
        ../../gcc/wide-int.h:945
0x825308 generic_wide_int<generic_wide_int<wi::extended_tree<192> > >
        ../../gcc/wide-int.h:722
0x825308 cmps<generic_wide_int<wi::extended_tree<192> >,
generic_wide_int<wi::extended_tree<192> > >
        ../../gcc/wide-int.h:1900
0x825308 tree_int_cst_compare
        ../../gcc/tree.h:5236
0x825308 c_add_case_label(unsigned int, splay_tree_s*, tree_node*, tree_node*,
tree_node*, tree_node*, bool*)
        ../../gcc/c-family/c-common.c:6634
0x5b87e3 finish_case_label(unsigned int, tree_node*, tree_node*)
        ../../gcc/cp/decl.c:3417
0x6d202a cp_parser_label_for_labeled_statement
        ../../gcc/cp/parser.c:10259
0x6c0030 cp_parser_statement
        ../../gcc/cp/parser.c:10132
0x6c16ac cp_parser_statement_seq_opt
        ../../gcc/cp/parser.c:10456
0x6c180e cp_parser_compound_statement
        ../../gcc/cp/parser.c:10410
0x6ecaec cp_parser_implicitly_scoped_statement
        ../../gcc/cp/parser.c:11550
0x6c09af cp_parser_selection_statement
        ../../gcc/cp/parser.c:10632
0x6c09af cp_parser_statement
        ../../gcc/cp/parser.c:10040
0x6c16ac cp_parser_statement_seq_opt
        ../../gcc/cp/parser.c:10456
0x6c180e cp_parser_compound_statement
        ../../gcc/cp/parser.c:10410
0x6e4c5b cp_parser_function_body
        ../../gcc/cp/parser.c:20225
Please submit a full bug report,
with preprocessed source if appropriate.

Compile attached file with -std=gnu++1y -march=nehalem (needed due to
intrinsics included)