[Bug go/68477] New: error: type variant differs by TYPE_STRING_FLAG.

["trippels at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68477

            Bug ID: 68477
           Summary: error: type variant differs by TYPE_STRING_FLAG.
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: go
          Assignee: ian at airs dot com
          Reporter: trippels at gcc dot gnu.org
                CC: cmang at google dot com
  Target Milestone: ---

markus@x4 /tmp % cat foo1.go
package foo
import "fmt"
func test() {
        fmt.Println("lto");
}

markus@x4 /tmp % cat foo2.go
package foo

markus@x4 /tmp % gccgo -flto foo1.go foo2.go
go1: error: type variant differs by TYPE_STRING_FLAG.
 <array_type 0x7efd23c735e8
    type <integer_type 0x7efd23c73540 uint8 readonly unsigned string-flag QI
        size <integer_cst 0x7efd23c35ca8 constant 8>
        unit size <integer_cst 0x7efd23c35cc0 constant 1>
        align 8 symtab 0 alias set -1 canonical type 0x7efd23c73540 precision 8
min <integer_cst 0x7efd23c35cd8 0> max <integer_cst 0x7efd23c35c78 255>
        pointer_to_this <pointer_type 0x7efd23c73690>>
    SI
    size <integer_cst 0x7efd23c35df8 type <integer_type 0x7efd23c392a0
bitsizetype> constant 32>
    unit size <integer_cst 0x7efd23c35e10 type <integer_type 0x7efd23c391f8
sizetype> constant 4>
    align 8 symtab 0 alias set -1 canonical type 0x7efd23c735e8
    domain <integer_type 0x7efd23c73498
        type <integer_type 0x7efd23c391f8 sizetype public unsigned DI
            size <integer_cst 0x7efd23c35bb8 constant 64>
            unit size <integer_cst 0x7efd23c35bd0 constant 8>
            align 64 symtab 0 alias set -1 canonical type 0x7efd23c391f8
precision 64 min <integer_cst 0x7efd23c35be8 0> max <integer_cst 0x7efd23c44460
18446744073709551615>>
        DI size <integer_cst 0x7efd23c35bb8 64> unit size <integer_cst
0x7efd23c35bd0 8>
        align 64 symtab 0 alias set -1 canonical type 0x7efd23c73498 precision
64 min <integer_cst 0x7efd23c35be8 0> max <integer_cst 0x7efd23c52a98 3>>
    pointer_to_this <pointer_type 0x7efd23c73888>>
go1: error: TYPE_CANONICAL is not compatible
 <array_type 0x7efd23c735e8
    type <integer_type 0x7efd23c73540 uint8 readonly unsigned string-flag QI
        size <integer_cst 0x7efd23c35ca8 constant 8>
        unit size <integer_cst 0x7efd23c35cc0 constant 1>
        align 8 symtab 0 alias set -1 canonical type 0x7efd23c73540 precision 8
min <integer_cst 0x7efd23c35cd8 0> max <integer_cst 0x7efd23c35c78 255>
        pointer_to_this <pointer_type 0x7efd23c73690>>
    SI
    size <integer_cst 0x7efd23c35df8 type <integer_type 0x7efd23c392a0
bitsizetype> constant 32>
    unit size <integer_cst 0x7efd23c35e10 type <integer_type 0x7efd23c391f8
sizetype> constant 4>
    align 8 symtab 0 alias set -1 canonical type 0x7efd23c735e8
    domain <integer_type 0x7efd23c73498
        type <integer_type 0x7efd23c391f8 sizetype public unsigned DI
            size <integer_cst 0x7efd23c35bb8 constant 64>
            unit size <integer_cst 0x7efd23c35bd0 constant 8>
            align 64 symtab 0 alias set -1 canonical type 0x7efd23c391f8
precision 64 min <integer_cst 0x7efd23c35be8 0> max <integer_cst 0x7efd23c44460
18446744073709551615>>
        DI size <integer_cst 0x7efd23c35bb8 64> unit size <integer_cst
0x7efd23c35bd0 8>
        align 64 symtab 0 alias set -1 canonical type 0x7efd23c73498 precision
64 min <integer_cst 0x7efd23c35be8 0> max <integer_cst 0x7efd23c52a98 3>>
    pointer_to_this <pointer_type 0x7efd23c73888>>
 <array_type 0x7efd23c73738
    type <integer_type 0x7efd23c73540 uint8 readonly unsigned string-flag QI
        size <integer_cst 0x7efd23c35ca8 constant 8>
        unit size <integer_cst 0x7efd23c35cc0 constant 1>
        align 8 symtab 0 alias set -1 canonical type 0x7efd23c73540 precision 8
min <integer_cst 0x7efd23c35cd8 0> max <integer_cst 0x7efd23c35c78 255>
        pointer_to_this <pointer_type 0x7efd23c73690>>
    string-flag SI
    size <integer_cst 0x7efd23c35df8 type <integer_type 0x7efd23c392a0
bitsizetype> constant 32>
    unit size <integer_cst 0x7efd23c35e10 type <integer_type 0x7efd23c391f8
sizetype> constant 4>
    align 8 symtab 0 alias set -1 canonical type 0x7efd23c735e8
    domain <integer_type 0x7efd23c73498
        type <integer_type 0x7efd23c391f8 sizetype public unsigned DI
            size <integer_cst 0x7efd23c35bb8 constant 64>
            unit size <integer_cst 0x7efd23c35bd0 constant 8>
            align 64 symtab 0 alias set -1 canonical type 0x7efd23c391f8
precision 64 min <integer_cst 0x7efd23c35be8 0> max <integer_cst 0x7efd23c44460
18446744073709551615>>
        DI size <integer_cst 0x7efd23c35bb8 64> unit size <integer_cst
0x7efd23c35bd0 8>
        align 64 symtab 0 alias set -1 canonical type 0x7efd23c73498 precision
64 min <integer_cst 0x7efd23c35be8 0> max <integer_cst 0x7efd23c52a98 3>>
    pointer_to_this <pointer_type 0x7efd23c737e0>>
go1: internal compiler error: verify_type failed
0xd8026c verify_type(tree_node const*)
        ../../gcc/gcc/tree.c:13818
0xd81f93 free_lang_data_in_cgraph
        ../../gcc/gcc/tree.c:5953
0xd81f93 free_lang_data
        ../../gcc/gcc/tree.c:5983
0xd81f93 execute
        ../../gcc/gcc/tree.c:6032