[Bug symtab/24820] .debug_names has incorrect contents

["tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=24820

--- Comment #5 from Tom Tromey <tromey at sourceware dot org> ---
.debug_names is a bit weird.

The 'parent' entry refers to an index in the name table,
but this leaves no way to decide which of several meanings
of the name might be the parent.  Normally for gdb this doesn't
matter, but it's still strange.

clang doesn't emit parent entries so I think those tables
can't be used.

gdb needs to know the CU language but this isn't in the tables.
gdb can emit it as an extension of course.  I suppose we could
read the first DIE of every CU -- but that's precisely the
kind of work we want to avoid.

gdb will have to mark some entries as linkage names.  Otherwise
there's no way to tell.

The special case for "(anonymous namespace)" in the DWARF spec
is bad, because it means that gdb might have to add to the
string table -- but only for this one string.  (I used to think
we'd need to emit more strings, but that was mistaken.)
For the index cache we can probably handle this via a trick.

It's kind of sad that DWARF invented a new format and then didn't
provide enough guidance for tools to be compatible at all.

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