[Bug go/64838] New: ICE in type_size, at go/go-gcc.cc:1110

[ro at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64838

            Bug ID: 64838
           Summary: ICE in type_size, at go/go-gcc.cc:1110
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: go
          Assignee: ian at airs dot com
          Reporter: ro at gcc dot gnu.org
                CC: cmang at google dot com
              Host: i386-pc-solaris2.1[01], i686-unknown-linux-gnu,
                    sparc-sun-solaris2.1[01]
            Target: i386-pc-solaris2.1[01], i686-unknown-linux-gnu,
                    sparc-sun-solaris2.1[01]
             Build: i386-pc-solaris2.1[01], i686-unknown-linux-gnu,
                    sparc-sun-solaris2.1[01]

In a 32-bit-default compiler, compiling the 64-bit
go.test/test/fixedbugs/issue6036.go test
causes an ICE:

FAIL: go.test/test/fixedbugs/issue6036.go   -O  (internal compiler error)
FAIL: go.test/test/fixedbugs/issue6036.go   -O  (test for excess errors)

Excess errors:
/vol/gcc/src/hg/trunk/local/gcc/testsuite/go.test/test/fixedbugs/issue6036.go:14:11:
error: array bound overflows
/vol/gcc/src/hg/trunk/local/gcc/testsuite/go.test/test/fixedbugs/issue6036.go:23:16:
error: array bound overflows
/vol/gcc/src/hg/trunk/local/gcc/testsuite/go.test/test/fixedbugs/issue6036.go:26:9:
error: array index out of bounds
go1: internal compiler error: in type_size, at go/go-gcc.cc:1110
0x8343740 Gcc_backend::type_size(Btype*)
        /vol/gcc/src/hg/trunk/local/gcc/go/go-gcc.cc:1110
0x83a0843 Type::backend_type_size(Gogo*, unsigned long*)
        /vol/gcc/src/hg/trunk/local/gcc/go/gofrontend/types.cc:2541
0x835525a Gogo::zero_value(Type*)
        /vol/gcc/src/hg/trunk/local/gcc/go/gofrontend/gogo.cc:600
0x83a3232 Type::type_descriptor_constructor(Gogo*, int, Named_type*, Methods
const*, bool)
        /vol/gcc/src/hg/trunk/local/gcc/go/gofrontend/types.cc:2053
0x83a46b2 Array_type::array_type_descriptor(Gogo*, Named_type*)
        /vol/gcc/src/hg/trunk/local/gcc/go/gofrontend/types.cc:6313
0x839ed1e Type::make_type_descriptor_var(Gogo*)
        /vol/gcc/src/hg/trunk/local/gcc/go/gofrontend/types.cc:1218
0x839f043 Type::type_descriptor_pointer(Gogo*, Location)
        /vol/gcc/src/hg/trunk/local/gcc/go/gofrontend/types.cc:1156
0x835a43e Named_object::get_backend(Gogo*, std::vector<Bexpression*,
std::allocator<Bexpression*> >&, std::vector<Btype*, std::allocator<Btype*> >&,
std::vector<Bfunction*, std::allocator<Bfunction*> >&)
        /vol/gcc/src/hg/trunk/local/gcc/go/gofrontend/gogo.cc:6918
0x8360eed Gogo::write_globals()
        /vol/gcc/src/hg/trunk/local/gcc/go/gofrontend/gogo.cc:1284
0x834c660 go_write_globals()
        /vol/gcc/src/hg/trunk/local/gcc/go/gofrontend/go.cc:146

  Rainer