[Bug target/82961] New: ICE in dwarf2out.c: deferred_asm_name != NULL

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82961

            Bug ID: 82961
           Summary: ICE in dwarf2out.c: deferred_asm_name != NULL
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: vries at gcc dot gnu.org
  Target Milestone: ---

When building for alpha-dec-vms, I run into this ICEs in libgcc:
...
make[2]: *** [_negdi2.o] Error 1
make[2]: *** [_ashldi3.o] Error 1
make[2]: *** [_lshrdi3.o] Error 1
make[2]: *** [_muldi3.o] Error 1
make[4]: *** [_muldi3.o] Error 1
make[4]: *** [_negdi2.o] Error 1
make[4]: *** [_ashrdi3.o] Error 1
make[4]: *** [_ashldi3.o] Error 1
make[4]: *** [_lshrdi3.o] Error 1
...

In more detail, the _lshrdi3.o one:
...
0xa64e1b dwarf2out_finish
        src/gcc/dwarf2out.c:29826
0x1476ede vmsdbgout_finish
        src/gcc/vmsdbgout.c:1569
0xa64e1b dwarf2out_finish
        src/gcc/dwarf2out.c:29826
0x1476ede vmsdbgout_finish
        /home/vries/gcc_versions/devel/src/gcc/vmsdbgout.c:1569
Please submit a full bug report,
...

The assert that triggers is:
...
29826     gcc_assert (deferred_asm_name == NULL);
...

The deferred_asm_name is for __clz_tab:
...
(gdb) call debug_generic_expr (deferred_asm_name.created_for )
__clz_tab
...