[Bug c++/68760] New: [6 Regression] ICE in pp_string (pretty-print.c:909)

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68760

            Bug ID: 68760
           Summary: [6 Regression] ICE in pp_string (pretty-print.c:909)
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
  Target Milestone: ---

Hello.

Starting from r228131, running:

$ cat tramp3d-v4.ii
class Init {
public:
  Init();
} a;

$ ./xgcc -B. tramp3d-v4.ii -c -fdump-ipa-cgraph

causes:
cc1plus: internal compiler error: Segmentation fault
0xe39480 crash_signal
        ../../gcc/toplev.c:353
0x16fb525 pp_string(pretty_printer*, char const*)
        ../../gcc/pretty-print.c:909
0x16fa2d3 pp_format(pretty_printer*, text_info*)
        ../../gcc/pretty-print.c:549
0x16fb2dd pp_printf(pretty_printer*, char const*, ...)
        ../../gcc/pretty-print.c:856
0x8285d4 dump_global_iord
        ../../gcc/cp/error.c:957
0x8292d7 dump_decl
        ../../gcc/cp/error.c:1197
0x82d444 decl_as_string(tree_node*, int)
        ../../gcc/cp/error.c:2855
0x82d52d lang_decl_name(tree_node*, int, bool)
        ../../gcc/cp/error.c:2890
0x8c3b9f cxx_printable_name_internal
        ../../gcc/cp/tree.c:2097
0x8c3c1a cxx_printable_name(tree_node*, int)
        ../../gcc/cp/tree.c:2106
0xa1f192 symtab_node::asm_name() const
        ../../gcc/symtab.c:451
0xa3667d analyze_functions
        ../../gcc/cgraphunit.c:1049
0xa39ed4 symbol_table::finalize_compilation_unit()
        ../../gcc/cgraphunit.c:2540

Thanks,
Martin