[Bug lto/87792] New: lto1.exe: internal compiler error: in get_constructor, at varpool.c:311

[fwmechanic at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87792

            Bug ID: 87792
           Summary: lto1.exe: internal compiler error: in get_constructor,
                    at varpool.c:311
           Product: gcc
           Version: 8.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: lto
          Assignee: unassigned at gcc dot gnu.org
          Reporter: fwmechanic at gmail dot com
                CC: marxin at gcc dot gnu.org
  Target Milestone: ---

Created attachment 44919
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44919&action=edit
contains minimized reproduction of error, all files

GCC "distro" I'm using is mingw-16.0-without-git.exe from
https://nuwen.net/mingw.html

Result: 

lto1.exe: internal compiler error: in get_constructor, at varpool.c:311
libbacktrace could not find executable to open
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
lto-wrapper.exe: fatal error: g++ returned 1 exit status
compilation terminated.
[Leaving LTRANS bugexe.exe.ltrans0.o]
c:/users/kevin/appdata/local/programs/mingw/64/mingw/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe:
error: lto-wrapper failed
collect2.exe: error: ld returned 1 exit status

Because this is associated with -flto (apparently takes 2 g++ steps: compile,
link, to reproduce) I have included all further info in attached zip:

Archive:  lto1_internal_error_get_constructor_varpool.zip
  Length      Date    Time    Name
---------  ---------- -----   ----
    26638  2018-10-29 06:28   err
      935  2018-10-29 06:28   out
    38792  2018-10-29 06:28   bugexe_exe.map
     1608  2018-10-29 06:28   bugexe.exe.ltrans0.s
       22  2018-10-29 06:28   bugexe.exe.ltrans.out
    17288  2018-10-29 06:28   bugexe.exe.ltrans0.o
      599  2018-10-29 06:28   -Bdynamic.res
    14970  2018-10-29 06:28   bugsrc.o
    34947  2018-10-29 06:28   bugsrc.s
   136444  2018-10-29 06:28   bugsrc.ii
---------                     -------
   272243                     10 files

File out is stdout, File err is stderr, respectively, from make.