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Do not write the index cache from an index

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The new .debug_names reader will work by creating a cooked index from
.debug_names.  This patch updates cooked_index::maybe_write_index to
avoid writing the index in this case.

However, in order to do this in a clean way, the readers are changed
so that a nullptr result from index_for_writing means "cannot be
done", and then the error message is moved into write_dwarf_index
(where it historically lived).
This commit is contained in:
Tom Tromey
2023-12-03 12:10:14 -07:00
parent 9fac3e79fd
commit 6e53356b77
3 changed files with 8 additions and 5 deletions
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2
gdb/dwarf2/index-write.c
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@@ -1629,6 +1629,8 @@ write_dwarf_index (dwarf2_per_bfd *per_bfd, const char *dir,
if (per_bfd->index_table == nullptr)
error (_("No debugging symbols"));
cooked_index *table = per_bfd->index_table->index_for_writing ();
if (table == nullptr)
error (_("Cannot use an index to create the index"));
if (per_bfd->types.size () > 1)
error (_("Cannot make an index when the file has multiple .debug_types sections"));