[Bug go/80128] New: [7 regression] go1: internal compiler error: in write_specific_type_functions, at go/gofrontend/types.cc:2002

["schwab at linux-m68k dot org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80128

            Bug ID: 80128
           Summary: [7 regression] go1: internal compiler error: in
                    write_specific_type_functions, at
                    go/gofrontend/types.cc:2002
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Keywords: build
          Severity: normal
          Priority: P3
         Component: go
          Assignee: ian at airs dot com
          Reporter: schwab@linux-m68k.org
                CC: cmang at google dot com
  Target Milestone: ---
            Target: m68k-*-*

Trying to build libgo on m68k the following ICE occurs:

/usr/bin/mkdir -p runtime/internal; files=`echo
../../../gcc/libgo/go/runtime/internal/sys/intrinsics.go
../../../gcc/libgo/go/runtime/internal/sys/stubs.go
../../../gcc/libgo/go/runtime/internal/sys/sys.go version.go | sed -e 's/[^
]*\.gox//g' -e 's/[^ ]*\.dep//'`; /bin/sh ./libtool --tag GO --mode=compile
/suse/schwab/src/gcc/c-m68k/./gcc/gccgo -B/suse/schwab/src/gcc/c-m68k/./gcc/
-B/daten/cross/m68k-linux/m68k-linux/bin/
-B/daten/cross/m68k-linux/m68k-linux/lib/ -isystem
/daten/cross/m68k-linux/m68k-linux/include -isystem
/daten/cross/m68k-linux/m68k-linux/sys-include       -O2 -g -I . -c
-fgo-pkgpath=`echo runtime/internal/sys.lo | sed -e 's/.lo$//'`
-fgo-compiling-runtime -o runtime/internal/sys.lo $files
libtool: compile:  /suse/schwab/src/gcc/c-m68k/./gcc/gccgo
-B/suse/schwab/src/gcc/c-m68k/./gcc/ -B/daten/cross/m68k-linux/m68k-linux/bin/
-B/daten/cross/m68k-linux/m68k-linux/lib/ -isystem
/daten/cross/m68k-linux/m68k-linux/include -isystem
/daten/cross/m68k-linux/m68k-linux/sys-include -O2 -g -I . -c
-fgo-pkgpath=runtime/internal/sys -fgo-compiling-runtime
../../../gcc/libgo/go/runtime/internal/sys/intrinsics.go
../../../gcc/libgo/go/runtime/internal/sys/stubs.go
../../../gcc/libgo/go/runtime/internal/sys/sys.go version.go  -fPIC -o
runtime/internal/.libs/sys.o
go1: internal compiler error: in write_specific_type_functions, at
go/gofrontend/types.cc:2002
0x6703bf Type::write_specific_type_functions(Gogo*, Named_type*, long,
std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&,
Function_type*, std::basic_string<char, std::char_traits<char>,
std::allocator<char> > const&, Function_type*)
        ../../gcc/gcc/go/gofrontend/types.cc:2002
0x67098c Type::specific_type_functions(Gogo*, Named_type*, long,
Function_type*, Function_type*, Named_object**, Named_object**)
        ../../gcc/gcc/go/gofrontend/types.cc:1980
0x66f36c Type::type_functions(Gogo*, Named_type*, Function_type*,
Function_type*, Named_object**, Named_object**)
        ../../gcc/gcc/go/gofrontend/types.cc:1762
0x674b82 Type::type_descriptor_constructor(Gogo*, int, Named_type*, Methods
const*, bool)
        ../../gcc/gcc/go/gofrontend/types.cc:2322
0x675b4a Pointer_type::do_type_descriptor(Gogo*, Named_type*)
        ../../gcc/gcc/go/gofrontend/types.cc:4668
0x66bb10 Type::make_type_descriptor_var(Gogo*)
        ../../gcc/gcc/go/gofrontend/types.cc:1239
0x66bf62 Type::type_descriptor_pointer(Gogo*, Location)
        ../../gcc/gcc/go/gofrontend/types.cc:1174
0x5f3352 Type_descriptor_expression::do_get_backend(Translate_context*)
        ../../gcc/gcc/go/gofrontend/expressions.cc:14421
0x5eb119 Struct_construction_expression::do_get_backend(Translate_context*)
        ../../gcc/gcc/go/gofrontend/expressions.cc:12641
0x66bd7d Type::make_type_descriptor_var(Gogo*)
        ../../gcc/gcc/go/gofrontend/types.cc:1290
0x66bf62 Type::type_descriptor_pointer(Gogo*, Location)
        ../../gcc/gcc/go/gofrontend/types.cc:1174
0x616672 Named_object::get_backend(Gogo*, std::vector<Bexpression*,
std::allocator<Bexpression*> >&, std::vector<Btype*, std::allocator<Btype*> >&,
std::vector<Bfunction*, std::allocator<Bfunction*> >&)
        ../../gcc/gcc/go/gofrontend/gogo.cc:7379
0x61d6b2 Gogo::write_globals()
        ../../gcc/gcc/go/gofrontend/gogo.cc:1317