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-rw-r--r--gdb/ChangeLog5
-rw-r--r--gdb/dwarf2read.c10
2 files changed, 11 insertions, 4 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 5e2a263..ae82862 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2012-12-03 Doug Evans <dje@google.com>
+
+ * dwarf2read.c (struct dwarf2_per_objfile): Clarify comment.
+ (dw2_find_symbol_file): Delete unused local file_data.
+
2012-12-03 Tom Tromey <tromey@redhat.com>
* ada-exp.y (write_object_renaming, write_var_or_type)
diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c
index f4bd7a9..cd81eed 100644
--- a/gdb/dwarf2read.c
+++ b/gdb/dwarf2read.c
@@ -257,9 +257,12 @@ struct dwarf2_per_objfile
struct mapped_index *index_table;
/* When using index_table, this keeps track of all quick_file_names entries.
- TUs can share line table entries with CUs or other TUs, and there can be
- a lot more TUs than unique line tables, so we maintain a separate table
- of all line table entries to support the sharing. */
+ TUs typically share line table entries with a CU, so we maintain a
+ separate table of all line table entries to support the sharing.
+ Note that while there can be way more TUs than CUs, we've already
+ sorted all the TUs into "type unit groups", grouped by their
+ DW_AT_stmt_list value. Therefore the only sharing done here is with a
+ CU and its associated TU group if there is one. */
htab_t quick_file_names_table;
/* Set during partial symbol reading, to prevent queueing of full
@@ -3385,7 +3388,6 @@ dw2_find_symbol_file (struct objfile *objfile, const char *name)
{
struct dwarf2_per_cu_data *per_cu;
offset_type *vec;
- struct quick_file_names *file_data;
const char *filename;
dw2_setup (objfile);