[Bug debug/87295] New: ICE with -ffat-lto-objects -fdebug-types-section -g

[nathan at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87295

            Bug ID: 87295
           Summary: ICE with -ffat-lto-objects -fdebug-types-section -g
           Product: gcc
           Version: 9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: debug
          Assignee: unassigned at gcc dot gnu.org
          Reporter: nathan at gcc dot gnu.org
  Target Milestone: ---

Created attachment 44691
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44691&action=edit
testcase

./cc1plus -fpreprocessed bug.ii -flto -ffat-lto-objects -fdebug-types-section
-g -std=gnu++17

bug.ii: At top level:
bug.ii:17:4: internal compiler error: Segmentation fault
17 | { };
   |    ^
0x135b276 crash_signal
        /home/nathans/egcs/trunk/obj/x86_64/../../src/gcc/toplev.c:325
0x7fd5e7842f2f ???
       
/usr/src/debug/glibc-2.27-78-g2b47bb9cba/signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0
0x2245c90 htab_hash_string
        /home/nathans/egcs/trunk/obj/x86_64/../../src/libiberty/hashtab.c:838
0xdc4487 hash_table<external_ref_hasher, xcallocator>::find_slot(external_ref*
const&, insert_option)
        /home/nathans/egcs/trunk/obj/x86_64/../../src/gcc/hash-table.h:414
0xd7be32 lookup_external_ref
        /home/nathans/egcs/trunk/obj/x86_64/../../src/gcc/dwarf2out.c:8954
0xd7bed9 optimize_external_refs_1
        /home/nathans/egcs/trunk/obj/x86_64/../../src/gcc/dwarf2out.c:8981
0xd7bfc5 optimize_external_refs_1
        /home/nathans/egcs/trunk/obj/x86_64/../../src/gcc/dwarf2out.c:8996
0xd7c122 optimize_external_refs
        /home/nathans/egcs/trunk/obj/x86_64/../../src/gcc/dwarf2out.c:9045
0xd80c1a output_comp_unit
        /home/nathans/egcs/trunk/obj/x86_64/../../src/gcc/dwarf2out.c:11053
0xdb9849 dwarf2out_finish
        /home/nathans/egcs/trunk/obj/x86_64/../../src/gcc/dwarf2out.c:31544