Do not put linkage names into .gdb_index
This changes the .gdb_index writer to skip linkage names. This was
always done historically (though somewhat implicitly).
diff --git a/gdb/dwarf2/index-write.c b/gdb/dwarf2/index-write.c
index b7a2e21..afe55da 100644
--- a/gdb/dwarf2/index-write.c
+++ b/gdb/dwarf2/index-write.c
@@ -1093,6 +1093,14 @@ write_cooked_index (cooked_index_vector *table,
{
for (const cooked_index_entry *entry : table->all_entries ())
{
+ /* GDB never put linkage names into .gdb_index. The theory here
+ is that a linkage name will normally be in the minimal
+ symbols anyway, so including it in the index is usually
+ redundant -- and the cases where it would not be redundant
+ are rare and not worth supporting. */
+ if ((entry->flags & IS_LINKAGE) != 0)
+ continue;
+
const auto it = cu_index_htab.find (entry->per_cu);
gdb_assert (it != cu_index_htab.cend ());
