[Bug debug/108772] [13 Regression] ICE in force_decl_die, at dwarf2out.cc:26751 since r13-4161-g32d16fe9d7e347bc

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108772

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #5)
> another possibility would be to stream "no DIE" info for not late
> created decls

like by setting DECL_IGNORED_P on them?  Like maybe with the following
which also fixes the issue:

diff --git a/gcc/lto-streamer-in.cc b/gcc/lto-streamer-in.cc
index 03cb41cfa16..f91e51b9327 100644
--- a/gcc/lto-streamer-in.cc
+++ b/gcc/lto-streamer-in.cc
@@ -1739,6 +1739,10 @@ lto_read_tree_1 (class lto_input_block *ib, class
data_in *data_in, tree expr)
          dref_entry e = { expr, str, off };
          dref_queue.safe_push (e);
        }
+      else if (DECL_P (expr))
+       /* Avoid creating a full DIE late for a decl that didn't have
+          it created early.  */
+       DECL_IGNORED_P (expr) = 1;
     }
 }