[PATCH] gdb: search local symbols before global symbols in completion
Oleg Tolmatcev <[email protected]> Sat, 1 Aug 2026 18:01:46 +0200
| Newsgroups | gmane.comp.gdb.patches |
|---|---|
| Message-ID | <[email protected]> |
When symbol completion is performed from a selected frame, search the
local blocks before scanning minimal symbols and global/static symbols.
This makes completion prefer names that are visible in the current
context, including local variables.
---
gdb/symtab.c | 72 ++++++++++++++++++++++++++--------------------------
1 file changed, 36 insertions(+), 36 deletions(-)
diff --git a/gdb/symtab.c b/gdb/symtab.c
index 5d5076f2e77..85665bebdf4 100644
--- a/gdb/symtab.c
+++ b/gdb/symtab.c
@@ -5931,6 +5931,42 @@ default_collect_symbol_completion_matches_break_on
lookup_name_info lookup_name (sym_text, name_match_type, true);
+ /* Search upwards from currently selected frame (so that we can
+ complete on local vars). Also catch fields of types defined in
+ this places which match our text string. Only complete on types
+ visible from current context. */
+
+ b = get_selected_block ();
+ surrounding_static_block = b == nullptr ? nullptr : b->static_block ();
+ surrounding_global_block = b == nullptr ? nullptr : b->global_block ();
+ if (surrounding_static_block != NULL)
+ while (b != surrounding_static_block)
+ {
+ QUIT;
+
+ for (struct symbol *sym : block_iterator_range (b))
+ {
+ if (code == TYPE_CODE_UNDEF)
+ {
+ completion_list_add_symbol (tracker, sym, lookup_name,
+ sym_text, word);
+ completion_list_add_fields (tracker, sym, lookup_name,
+ sym_text, word);
+ }
+ else if (sym->domain () == STRUCT_DOMAIN
+ && sym->type ()->code () == code)
+ completion_list_add_symbol (tracker, sym, lookup_name,
+ sym_text, word);
+ }
+
+ /* Stop when we encounter an enclosing function. Do not stop for
+ non-inlined functions - the locals of the enclosing function
+ are in scope for a nested function. */
+ if (b->function () != NULL && b->inlined_p ())
+ break;
+ b = b->superblock ();
+ }
+
/* At this point scan through the misc symbol vectors and add each
symbol you find to the list. Eventually we want to ignore
anything that isn't a text symbol (everything else will be
@@ -5974,42 +6010,6 @@ default_collect_symbol_completion_matches_break_on
SEARCH_ALL_DOMAINS);
}
- /* Search upwards from currently selected frame (so that we can
- complete on local vars). Also catch fields of types defined in
- this places which match our text string. Only complete on types
- visible from current context. */
-
- b = get_selected_block ();
- surrounding_static_block = b == nullptr ? nullptr : b->static_block ();
- surrounding_global_block = b == nullptr ? nullptr : b->global_block ();
- if (surrounding_static_block != NULL)
- while (b != surrounding_static_block)
- {
- QUIT;
-
- for (struct symbol *sym : block_iterator_range (b))
- {
- if (code == TYPE_CODE_UNDEF)
- {
- completion_list_add_symbol (tracker, sym, lookup_name,
- sym_text, word);
- completion_list_add_fields (tracker, sym, lookup_name,
- sym_text, word);
- }
- else if (sym->domain () == STRUCT_DOMAIN
- && sym->type ()->code () == code)
- completion_list_add_symbol (tracker, sym, lookup_name,
- sym_text, word);
- }
-
- /* Stop when we encounter an enclosing function. Do not stop for
- non-inlined functions - the locals of the enclosing function
- are in scope for a nested function. */
- if (b->function () != NULL && b->inlined_p ())
- break;
- b = b->superblock ();
- }
-
/* Add fields from the file's types; symbols will be added below. */
if (code == TYPE_CODE_UNDEF)
--
2.55.0.windows.1