[Bug symtab/27930] New: gdb index does not handle DWARF 5 type units

[Bug symtab/27930] New: gdb index does not handle DWARF 5 type units

[tromey at sourceware dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=27930

            Bug ID: 27930
           Summary: gdb index does not handle DWARF 5 type units
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: symtab
          Assignee: unassigned at sourceware dot org
          Reporter: tromey at sourceware dot org
  Target Milestone: ---

In DWARF 5, a type unit can appear in .debug_info.
However, the gdb_index section does not handle this
situation -- it assumes that all type units appear in
.debug_types.

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[Bug symtab/27930] gdb index does not handle DWARF 5 type units

[tromey at sourceware dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=27930

--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
Probably we should just close this as part of a general move
to preferring .debug_names instead.

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[Bug symtab/27930] gdb index does not handle DWARF 5 type units

[tromey at sourceware dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=27930

Tom Tromey <tromey at sourceware dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|                            |27453


Referenced Bugs:

https://sourceware.org/bugzilla/show_bug.cgi?id=27453
[Bug 27453] [meta] DWARF 5 support
-- 
You are receiving this mail because:
You are on the CC list for the bug.

[Bug symtab/27930] gdb index does not handle DWARF 5 type units

[tromey at sourceware dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=27930

--- Comment #2 from Tom Tromey <tromey at sourceware dot org> ---
There's a test for this, gdb.dwarf2/gdb-index-types-dwarf5.exp,
but from what I can see it only passes by accident.

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[Bug symtab/27930] gdb index does not handle DWARF 5 type units

[tromey at sourceware dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=27930

Tom Tromey <tromey at sourceware dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|                            |16998


Referenced Bugs:

https://sourceware.org/bugzilla/show_bug.cgi?id=16998
[Bug 16998] perf improvements for searching GLOBAL_BLOCK
-- 
You are receiving this mail because:
You are on the CC list for the bug.

[Bug symtab/27930] gdb index does not handle DWARF 5 type units

[tromey at sourceware dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=27930

Tom Tromey <tromey at sourceware dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://sourceware.org/bugz
                   |                            |illa/show_bug.cgi?id=31363

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[Bug symtab/27930] gdb index does not handle DWARF 5 type units

[sam at gentoo dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=27930

Sam James <sam at gentoo dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |sam at gentoo dot org

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[Bug symtab/27930] gdb index does not handle DWARF 5 type units

[tromey at sourceware dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=27930

--- Comment #3 from Tom Tromey <tromey at sourceware dot org> ---
It turns out there is a check where, if there is not .debug_types,
then TUs are assumed to come from .debug_info:

      dwarf2_section_info *section
        = (per_bfd->types.size () == 1
           ? &per_bfd->types[0]
           : &per_bfd->infos[0]);

So while this doesn't work in general, it can work in
a specific case.  This isn't documented.

-- 
You are receiving this mail because:
You are on the CC list for the bug.