[Bug debug/86457] New: [8/9 Regression] ICE in add_dwarf_attr, at dwarf2out.c:4405 since r251448

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86457

            Bug ID: 86457
           Summary: [8/9 Regression] ICE in add_dwarf_attr, at
                    dwarf2out.c:4405 since r251448
           Product: gcc
           Version: 9.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: debug
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
                CC: rguenth at gcc dot gnu.org
  Target Milestone: ---

Following ICEs:

$ cat ice3.ii
class O {};
O eo;
int main () {}

$ g++ ice3.ii -flto -g1 -ffat-lto-objects  -fdebug-types-section -gdwarf-4
ice3.ii:3:14: internal compiler error: in add_dwarf_attr, at dwarf2out.c:4405
 int main () {}
              ^
0x6a83c4 add_dwarf_attr
        /home/marxin/Programming/gcc/gcc/dwarf2out.c:4405
0xb687e4 add_AT_lineptr
        /home/marxin/Programming/gcc/gcc/dwarf2out.c:5216
0xb687e4 dwarf2out_finish
        /home/marxin/Programming/gcc/gcc/dwarf2out.c:31335