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gdb/gdb-cxx-performance-1of2.patch

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http://sourceware.org/ml/gdb-cvs/2013-06/msg00034.html
### src/gdb/ChangeLog 2013/06/05 20:43:53 1.15689
### src/gdb/ChangeLog 2013/06/05 22:28:51 1.15690
## -1,3 +1,14 @@
+2013-06-05 Doug Evans <dje@google.com>
+ Keith Seitz <keiths@redhat.com>
+
+ PR 15519
+ * cp-namespace.c (find_symbol_in_baseclass): Call
+ cp_lookup_symbol_in_namespace instead of cp_lookup_symbol_namespace.
+ Check result of call to lookup_symbol_static.
+ Call lookup_static_symbol_aux unconditionally.
+ Call check_typedef on base types before accessing them.
+ (cp_lookup_nested_symbol): Fix comment.
+
2013-06-05 Luis Machado <lgustavo@codesourcery.com>
* gnu-v3-abi.c (gnuv3_skip_trampoline): Handle thunk
--- src/gdb/cp-namespace.c 2013/05/30 17:29:06 1.67
+++ src/gdb/cp-namespace.c 2013/06/05 22:28:51 1.68
@@ -720,36 +720,40 @@
for (i = 0; i < TYPE_N_BASECLASSES (parent_type); ++i)
{
size_t len;
+ struct type *base_type = TYPE_BASECLASS (parent_type, i);
const char *base_name = TYPE_BASECLASS_NAME (parent_type, i);
if (base_name == NULL)
continue;
/* Search this particular base class. */
- sym = cp_lookup_symbol_namespace (base_name, name, block, VAR_DOMAIN);
+ sym = cp_lookup_symbol_in_namespace (base_name, name, block,
+ VAR_DOMAIN, 0);
if (sym != NULL)
break;
+ /* Now search all static file-level symbols. We have to do this for
+ things like typedefs in the class. First search in this symtab,
+ what we want is possibly there. */
len = strlen (base_name) + 2 + strlen (name) + 1;
concatenated_name = xrealloc (concatenated_name, len);
xsnprintf (concatenated_name, len, "%s::%s", base_name, name);
sym = lookup_symbol_static (concatenated_name, block, VAR_DOMAIN);
+ if (sym != NULL)
+ break;
- /* If there is currently no BLOCK, e.g., the inferior hasn't yet
- been started, then try searching all STATIC_BLOCK symbols in
- all objfiles. */
- if (block == NULL)
- {
- sym = lookup_static_symbol_aux (concatenated_name, VAR_DOMAIN);
- if (sym != NULL)
- break;
- }
+ /* Nope. We now have to search all static blocks in all objfiles,
+ even if block != NULL, because there's no guarantees as to which
+ symtab the symbol we want is in. */
+ sym = lookup_static_symbol_aux (concatenated_name, VAR_DOMAIN);
+ if (sym != NULL)
+ break;
/* If this class has base classes, search them next. */
- if (TYPE_N_BASECLASSES (TYPE_BASECLASS (parent_type, i)) > 0)
+ CHECK_TYPEDEF (base_type);
+ if (TYPE_N_BASECLASSES (base_type) > 0)
{
- sym = find_symbol_in_baseclass (TYPE_BASECLASS (parent_type, i),
- name, block);
+ sym = find_symbol_in_baseclass (base_type, name, block);
if (sym != NULL)
break;
}
@@ -797,8 +801,8 @@
if (sym != NULL)
return sym;
- /* Now search all static file-level symbols. Not strictly
- correct, but more useful than an error. We do not try to
+ /* Now search all static file-level symbols. We have to do this
+ for things like typedefs in the class. We do not try to
guess any imported namespace as even the fully specified
namespace search is already not C++ compliant and more
assumptions could make it too magic. */
### src/gdb/testsuite/ChangeLog 2013/06/05 20:38:37 1.3685
### src/gdb/testsuite/ChangeLog 2013/06/05 22:28:51 1.3686
## -1,3 +1,11 @@
+2013-06-05 Doug Evans <dje@google.com>
+ Keith Seitz <keiths@redhat.com>
+
+ * gdb.cp/derivation2.cc: New file.
+ * gdb.cp/derivation.cc (main): Call foo2.
+ * gdb.cp/derivation.exp: Add tests for typedefs in another
+ file, and when there's an active block.
+
2013-06-05 Luis Machado <lgustavo@codesourcery.com>
* gdb.cp/virtfunc.exp (make_one_vtable_result): Handle extra output
--- src/gdb/testsuite/gdb.cp/derivation2.cc
+++ src/gdb/testsuite/gdb.cp/derivation2.cc 2013-06-10 12:35:14.881272247 +0000
@@ -0,0 +1,49 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+ Copyright 2013 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* A copy of some classes in derivation.cc so that we can test symbol lookup
+ in other CUs. */
+
+class A2 {
+public:
+ typedef int value_type;
+ value_type a;
+
+ A2()
+ {
+ a=1;
+ }
+};
+
+class D2 : public A2 {
+public:
+ value_type d;
+
+ D2()
+ {
+ d=7;
+ }
+};
+
+void
+foo2 ()
+{
+ D2 d2_instance;
+ d2_instance.a = 42;
+ d2_instance.d = 43;
+}
--- src/gdb/testsuite/gdb.cp/derivation.cc 2013/01/01 06:33:27 1.5
+++ src/gdb/testsuite/gdb.cp/derivation.cc 2013/06/05 22:28:51 1.6
@@ -16,6 +16,8 @@
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+extern void foo2 (); /* from derivation2.cc */
+
namespace N {
typedef double value_type;
struct Base { typedef int value_type; };
@@ -306,9 +308,7 @@
N::Derived::value_type d = 1;
N::value_type n = 3.0;
dobj.doit ();
+ foo2 ();
return 0;
}
-
-
-
--- src/gdb/testsuite/gdb.cp/derivation.exp 2013/01/01 06:33:27 1.24
+++ src/gdb/testsuite/gdb.cp/derivation.exp 2013/06/05 22:28:51 1.25
@@ -32,14 +32,15 @@
load_lib "cp-support.exp"
-standard_testfile .cc
+standard_testfile derivation.cc derivation2.cc
-if {[prepare_for_testing $testfile.exp $testfile $srcfile {debug c++}]} {
+if {[prepare_for_testing $testfile.exp $testfile \
+ [list $srcfile $srcfile2] {debug c++}]} {
return -1
}
# Check inheritance of typedefs.
-foreach klass {"A" "D" "E" "F"} {
+foreach klass {"A" "D" "E" "F" "A2" "D2"} {
gdb_test "ptype ${klass}::value_type" "type = int"
gdb_test "whatis ${klass}::value_type" "type = int"
gdb_test "p (${klass}::value_type) 0" " = 0"
@@ -57,6 +58,13 @@
continue
}
+# Check inheritance of typedefs again, but this time with an active block.
+foreach klass {"A" "D" "A2" "D2"} {
+ gdb_test "ptype ${klass}::value_type" "type = int"
+ gdb_test "whatis ${klass}::value_type" "type = int"
+ gdb_test "p (${klass}::value_type) 0" " = 0"
+}
+
gdb_test "up" ".*main.*" "up from marker1"
# Print class types and values.
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