[Bug symtab/28261] [debug-names] FAIL: gdb.dwarf2/dw2-ranges-psym.exp: No complaints

["vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=28261

--- Comment #4 from Tom de Vries <vries at gcc dot gnu.org> ---
Alternatively, we can do:
...
diff --git a/gdb/dwarf2/index-write.c b/gdb/dwarf2/index-write.c
index 4e00c716d91..7333e2b2d55 100644
--- a/gdb/dwarf2/index-write.c
+++ b/gdb/dwarf2/index-write.c
@@ -1481,14 +1481,11 @@ write_debug_names (dwarf2_per_objfile *per_objfile,
   header.append_uint (2, dwarf5_byte_order, 0);

   /* comp_unit_count - The number of CUs in the CU list.  */
-  header.append_uint (4, dwarf5_byte_order,
-                     per_objfile->per_bfd->all_comp_units.size ()
-                     - per_objfile->per_bfd->tu_stats.nr_tus);
+  header.append_uint (4, dwarf5_byte_order, counter);

   /* local_type_unit_count - The number of TUs in the local TU
      list.  */
-  header.append_uint (4, dwarf5_byte_order,
-                     per_objfile->per_bfd->tu_stats.nr_tus);
+  header.append_uint (4, dwarf5_byte_order, types_counter);

   /* foreign_type_unit_count - The number of TUs in the foreign TU
      list.  */
...
which gives us:
...
CU table:
[  0] 0x0
[  1] 0x2e
[  2] 0xa5
[  3] 0xd2
[  4] 0x150
[  5] 0x308
...
but then we run into:
...
$ gdb -q -batch \
  -ex "set trace-commands on" \
  -x outputs/gdb.dwarf2/dw2-ranges-psym/gdb.in.6
+set height 0
+set width 0
+dir
+dir /home/vries/gdb_versions/devel/src/gdb/testsuite/gdb.dwarf2
+show complaints
Max number of complaints about incorrect symbols is 0.
+set complaints 5
+file ./outputs/gdb.dwarf2/dw2-ranges-psym/dw2-ranges-psym
+set complaints 0
+delete breakpoints
+info breakpoints
No breakpoints or watchpoints.
+break -qualified main
Breakpoint 1 at 0x4004ab
+run 

Breakpoint 1, 0x00000000004004ab in main ()
+break someothername
src/gdb/dwarf2/read.c:6627: internal-error:
cutu_reader::cutu_reader(dwarf2_per_cu_data*, dwarf2_per_objfile*,
abbrev_table*, dwarf2_cu*, bool): Assertion `this_cu->length ==
cu->header.get_length ()' failed.
...

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