File gdb-symtab-fix-too-many-symbols-in-gdbpy_lookup... of Package gdb

Overview Repositories Revisions Requests Users Attributes Meta

File gdb-symtab-fix-too-many-symbols-in-gdbpy_lookup_stat.patch of Package gdb (Revision 4929420d5651d07e498f9cdc75ca7658)

Currently displaying revision 4929420d5651d07e498f9cdc75ca7658 , Show latest

From 1362bc937bd54dbd22dd7b3c7ae9d8ab6ca7bbfc Mon Sep 17 00:00:00 2001
From: Tom de Vries <tdevries@suse.de>
Date: Wed, 6 Sep 2023 11:00:01 +0200
Subject: [PATCH 10/12] [gdb/symtab] Fix too many symbols in
 gdbpy_lookup_static_symbols

When running test-case gdb.python/py-symbol.exp with target board
cc-with-dwz-m, we run into:
...
(gdb) python print (len (gdb.lookup_static_symbols ('rr')))^M
4^M
(gdb) FAIL: gdb.python/py-symbol.exp: \
  print (len (gdb.lookup_static_symbols ('rr')))
...
while with target board unix we have instead:
...
(gdb) python print (len (gdb.lookup_static_symbols ('rr')))^M
2^M
(gdb) PASS: gdb.python/py-symbol.exp: \
  print (len (gdb.lookup_static_symbols ('rr')))
...

The problem is that the loop in gdbpy_lookup_static_symbols loops over compunits
representing both CUs and PUs:
...
 	  for (compunit_symtab *cust : objfile->compunits ())
...

When doing a lookup on a PU, the user link is followed until we end up at a CU,
and the lookup is done in that CU.

In other words, when doing a lookup in the loop for a PU we duplicate the
lookup for a CU that is already handled by the loop.

Fix this by skipping PUs in the loop in gdb.lookup_static_symbols.

Tested on x86_64-linux.

PR symtab/25261
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=25261
---
 gdb/python/py-symbol.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/gdb/python/py-symbol.c b/gdb/python/py-symbol.c
index b8777966c47..ed4250bc2c7 100644
--- a/gdb/python/py-symbol.c
+++ b/gdb/python/py-symbol.c
@@ -582,9 +582,12 @@ gdbpy_lookup_static_symbols (PyObject *self, PyObject *args, PyObject *kw)
 	{
 	  for (compunit_symtab *cust : objfile->compunits ())
 	    {
-	      const struct blockvector *bv;
+	      /* Skip included compunits to prevent including compunits from
+		 being searched twice.  */
+	      if (cust->user != nullptr)
+		continue;
 
-	      bv = cust->blockvector ();
+	      const struct blockvector *bv = cust->blockvector ();
 	      const struct block *block = bv->static_block ();
 
 	      if (block != nullptr)
-- 
2.35.3

Places

File gdb-symtab-fix-too-many-symbols-in-gdbpy_lookup_stat.patch of Package gdb (Revision 4929420d5651d07e498f9cdc75ca7658)

Places