[Bug c/69518] New: Flag -g causes "error: type variant has different TYPE_VFIELD"

[dcb314 at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69518

            Bug ID: 69518
           Summary: Flag -g causes "error: type variant has different
                    TYPE_VFIELD"
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dcb314 at hotmail dot com
  Target Milestone: ---

Created attachment 37493
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37493&action=edit
C source code

gcc trunk, dated 20160127, when given the attached C code
and asked to compile it with -g, does this:

common.c: In function ‘stats_errcount’:
common.c:611:1: error: type variant has different TYPE_VFIELD
 <record_type 0x7f8488d94690 s_stats asm_written type_0 BLK
    size <integer_cst 0x7f8488c316d8 type <integer_type 0x7f8488e322a0
bitsizetype> constant 640>
    unit size <integer_cst 0x7f8488c31678 type <integer_type 0x7f8488e321f8
sizetype> constant 80>
    align 64 symtab -1998967440 alias set -1 canonical type 0x7f8488d94690
    fields <field_decl 0x7f8488d56390 cnt_regfile

Without -g, it compiles fine.