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From: "vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug symtab/29336] New: [gdb, debug-types, debug-names] Bad CU index
 complaint not triggered
Date: Fri, 08 Jul 2022 09:01:13 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D29336

            Bug ID: 29336
           Summary: [gdb, debug-types, debug-names] Bad CU index complaint
                    not triggered
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: symtab
          Assignee: unassigned at sourceware dot org
          Reporter: vries at gcc dot gnu.org
  Target Milestone: ---

While working on PR29334, I noticed this code right above the DW_IDX_type_u=
nit
handling code:
...
        case DW_IDX_compile_unit:
          /* Don't crash on bad data.  */
          if (ull >=3D per_bfd->all_comp_units.size ())
            {
              complaint (_(".debug_names entry has bad CU index %s"
                           " [in module %s]"),
                         pulongest (ull),
                         objfile_name (objfile));
              continue;
            }
          per_cu =3D per_bfd->get_cu (ull);
          break;
...

So, if I have 5 CUs and 5 TUs, and a ull CU index of 7, we should complain.

But we don't because we compare with "per_bfd->all_comp_units.size ()" inst=
ead
of with "per_bfd->all_comp_units.size () - per_bfd->tu_stats.nr_tus".

--=20
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