* [PATCH] Fix end of CU calculation in cooked_indexer::index_dies
@ 2022-06-09 15:24 Tom Tromey
2022-06-25 17:10 ` Tom Tromey
0 siblings, 1 reply; 2+ messages in thread
From: Tom Tromey @ 2022-06-09 15:24 UTC (permalink / raw)
To: gdb-patches; +Cc: Tom Tromey
cooked_indexer::index_dies incorrect computes the end of the current
CU in the .debug_info. This isn't readily testable without writing
intentionally corrupt DWARF, but it's apparent through observation: it
is currently based on 'info_ptr', which does not always point to the
start of the CU. This patch fixes the expression. Tested on x86-64
Fedora 34.
---
gdb/dwarf2/read.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/gdb/dwarf2/read.c b/gdb/dwarf2/read.c
index 696277d931a..403f00c3b95 100644
--- a/gdb/dwarf2/read.c
+++ b/gdb/dwarf2/read.c
@@ -18276,7 +18276,9 @@ cooked_indexer::index_dies (cutu_reader *reader,
const cooked_index_entry *parent_entry,
bool fully)
{
- const gdb_byte *end_ptr = info_ptr + reader->cu->header.get_length ();
+ const gdb_byte *end_ptr = (reader->buffer
+ + to_underlying (reader->cu->header.sect_off)
+ + reader->cu->header.get_length ());
while (info_ptr < end_ptr)
{
--
2.34.1
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH] Fix end of CU calculation in cooked_indexer::index_dies
2022-06-09 15:24 [PATCH] Fix end of CU calculation in cooked_indexer::index_dies Tom Tromey
@ 2022-06-25 17:10 ` Tom Tromey
0 siblings, 0 replies; 2+ messages in thread
From: Tom Tromey @ 2022-06-25 17:10 UTC (permalink / raw)
To: Tom Tromey; +Cc: gdb-patches
>>>>> "Tom" == Tom Tromey <tom@tromey.com> writes:
Tom> cooked_indexer::index_dies incorrect computes the end of the current
Tom> CU in the .debug_info. This isn't readily testable without writing
Tom> intentionally corrupt DWARF, but it's apparent through observation: it
Tom> is currently based on 'info_ptr', which does not always point to the
Tom> start of the CU. This patch fixes the expression. Tested on x86-64
Tom> Fedora 34.
I'm checking this in.
Tom
^ permalink raw reply [flat|nested] 2+ messages in thread
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