[Bug debug/71057] [6/7 Regression] ICE in schedule_generic_params_dies_gen, at dwarf2out.c:24142

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71057

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P2
             Status|NEW                         |ASSIGNED
                 CC|                            |rguenth at gcc dot gnu.org
      Known to work|                            |5.3.0
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot 
gnu.org
   Target Milestone|---                         |6.2

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Hum.

static void
dwarf2out_finish (const char *filename)
{
...
  /* Walk through the list of incomplete types again, trying once more to
     emit full debugging info for them.  */
  retry_incomplete_types ();

that's certainly not within the spirit of early-debug.  Trivial patch
(on trunk free the vector):

Index: gcc/dwarf2out.c
===================================================================
--- gcc/dwarf2out.c     (revision 236032)
+++ gcc/dwarf2out.c     (working copy)
@@ -19401,11 +19401,13 @@ gen_entry_point_die (tree decl, dw_die_r
 static void
 retry_incomplete_types (void)
 {
+  set_early_dwarf s;
   int i;

   for (i = vec_safe_length (incomplete_types) - 1; i >= 0; i--)
     if (should_emit_struct_debug ((*incomplete_types)[i],
DINFO_USAGE_DIR_USE))
       gen_type_die ((*incomplete_types)[i], comp_unit_die ());
+  vec_safe_truncate (incomplete_types, 0);
 }

 /* Determine what tag to use for a record type.  */
@@ -27382,10 +27384,6 @@ dwarf2out_finish (const char *filename)
   resolve_addr (comp_unit_die ());
   move_marked_base_types ();

-  /* Walk through the list of incomplete types again, trying once more to
-     emit full debugging info for them.  */
-  retry_incomplete_types ();
-
   if (flag_eliminate_unused_debug_types)
     prune_unused_types ();

@@ -27686,6 +27684,10 @@ dwarf2out_finish (const char *filename)
 static void
 dwarf2out_early_finish (void)
 {
+  /* Walk through the list of incomplete types again, trying once more to
+     emit full debugging info for them.  */
+  retry_incomplete_types ();
+
   /* The point here is to flush out the limbo list so that it is empty
      and we don't need to stream it for LTO.  */
   flush_limbo_die_list ();