mirror of
git://sourceware.org/git/libabigail.git
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8b28d171c3
While trying to diff two identical files (abidiff foo.so foo.so) it
appeared that canonicalizing types during e.g, the DWARF reading
process was leading to subtle errors because it's extremely hard to
know when a type is complete. That is, during the building of a class
type C, a pointer to C can be built before C is complete. Worse, even
after reading the DIE (from DWARF) of class C, there can be DIE seen
later in the translation unit that modifies type C. In these late
cases, one needs to wait -- not only until C is fully built, but also
sometimes, after the translation unit is fully built -- to
canonicalize C and then the pointer to C. This kind of things.
So now there are two possible points in time when canonicalization of
a type can happen. It can happen early, when the type is built. This
is the case for basic types and composite types for which all
sub-types are canonicalized already. It can happen late, right after
we've finished reading the debug info for the current translation
unit.
So this patch fixes the IR traversal and uses that to walk the
translation unit (or even types) after it's built. It does away with
the first attempt to perform early canonicalizing only.
The patch also handles type canonicalizing while reading xml-abi
format.
* include/abg-fwd.h (is_class_type)
(type_has_non_canonicalized_subtype): Declare new functions.
(is_member_type): Remove the overload that takes a decl_base_sptr.
It's superfluous. We just need the one that takes a
type_base_sptr.
* include/abg-ir.h (translation_unit::{is_constructed,
set_is_constructed}): Add new methods.
(class_decl::has_virtual_member_functions): Likewise.
(class decl_base): Makes it virtually inherit ir_traversable_base.
(class type_base): Make this virtually inherit traversable_base
too.
(type_base::canonicalize): Renamed enable_canonical_equality
into this.
(type_base::traverse): Declare new virtual method.
(canonicalize): Renamed enable_canonical_equality into this.
(scope_type_decl::traverse): Declare new virtual method.
(namespace_decl::get_pretty_representation): Declare new virtual
method.
(function_type::traverse): Likewise.
(class_decl::base_spec::traverse): Likewise.
(ir_node_visitor::visit): Remove the overloads and replace each of
them with a pair of ...
(ir_node_visitor::{visit_begin, visit_end}): ... of these.
* include/abg-traverse.h (traversable_base::visiting): New
method.
(traversable_base::visiting_): New data member.
(traversable_base::traversable_base): New constructor.
* src/abg-ir.cc ({scope_decl, type_decl, namespace_decl,
qualified_type_def, pointer_type_def, reference_type_def,
array_type_def, enum_type_decl, typedef_decl, var_decl,
function_decl, function_decl::parameter, class_decl,
class_decl::member_function_template,
class_decl::member_class_template, function_tdecl,
class_tdecl}::traverse): Fix this to properly set the
traversable_base::visiting_ flag and to reflect the new signatures
of the ir_node_visitor methods.
({type_base, scope_type_decl, function_type,
class_decl::base_spec}::traverse): New method.
(type_base::get_canonical_type_for): Handle the case of the type
already having a canonical type. Properly hash the type using the
dynamic type hasher. Look through declaration-only classes to
consider the definition of the class instead. Fix logic to have a
single pointer of return, to ease debugging.
(canonicalize): Renamed enable_canonical_equality into this.
(namespace_decl::get_pretty_representation): Define new method.
(ir_node_visitor::visit): Replace each of these overloads with a
pair of visit_begin/visit_end ones.
(translation_unit::priv::is_constructed_): New data member.
(translation_unit::priv::priv): Initialize it.
(translation_unit::{is_constructed, set_is_constructed}): Define
new methods.
(is_member_type(const decl_base_sptr)): Remove.
(is_class_type(decl_base *d)): Define new function.
(class_decl::has_virtual_member_functions): Define new method.
(equals(const class_decl&, const class_decl&, change_kind*)): If
the containing translation unit is not constructed yet, do not
take virtual member functions in account when comparing the
classes. This is because when reading from DWARF, there can be
DIEs that change the number of virtual member functions after the
DIE of the class. So one needs to start taking virtual members
into account only after the translation unit has been constructed.
(class non_canonicalized_subtype_detector): Define new type.
(type_has_non_canonicalized_subtype): Define new function.
* src/abg-corpus.cc (symtab_build_visitor_type::visit): Renamed
this into symtab_build_visitor_type::visit_end.
* src/abg-dwarf-reader.cc (die_type_map_type): New typedef.
(die_class_map_type): This is now a typedef on a map of
Dwarf_Off/class_decl_sptr.
(read_context::{die_type_map_, alternate_die_type_map_,
types_to_canonicalize_, alt_types_to_canonicalize_}): New data
members.
(read_context::{associate_die_to_decl,
associate_die_to_decl_primary}): Make these methods public.
(read_context::{associate_die_to_type,
lookup_type_from_die_offset, is_wip_class_die_offset,
types_to_canonicalize, schedule_type_for_canonicalization}):
Define new methods.
(build_type_decl, build_enum_type)
(build_class_type_and_add_to_ir, build_qualified_type)
(build_pointer_type_def, build_reference_type, build_array_type)
(build_typedef_type, build_function_decl): Do not canonicalize
types here.
(maybe_canonicalize_type): Define new function.
(build_ir_node_from_die): Take a new flag that says if the ir node
is a member type/function or not. Early-canonicalize base types.
Canonicalize composite types that have only canonicalized
sub-types. Schedule the other types for late canonicalizing. For
class types, early canonicalize those that are non-member types,
that are fully constructed and that have only canonicalized
sub-types. Adjust to the new signature of build_ir_node_from_die.
(get_scope_for_die, build_namespace_decl_and_add_to_ir)
(build_qualified_type, build_pointer_type_def)
(build_reference_type, build_array_type, build_typedef_type)
(build_var_decl, build_function_decl): Adjust for the new
signature of build_ir_node_from_die.
(build_translation_unit_and_add_to_ir): Likewise. Perform the
late canonicalizing of the types that have been scheduled for
that.
(build_class_type_and_add_to_ir): Return a class_decl_sptr, not a
decl_base_sptr. Adjust for the new signature of
build_ir_node_from_die. Early canonicalize member types that are
created and added to a given class, or schedule them for late
canonicalizing.
* src/abg-reader.cc (class read_context::{m_wip_classes_map,
m_types_to_canonicalize}): New data members.
(read_context::{clear_types_to_canonicalize,
clear_wip_classes_map, mark_class_as_wip, unmark_class_as_wip,
is_wip_class, maybe_canonicalize_type,
schedule_type_for_late_canonicalizing,
perform_late_type_canonicalizing}): Add new method definitions.
(read_context::clear_per_translation_unit_data): Call
read_context::clear_types_to_canonicalize().
(read_translation_unit_from_input): Call
read_context::perform_late_type_canonicalizing() at the end of the
function.
(build_function_decl): Fix the function type canonicalizing (per
translation) that was already in place. Do the canonicalizing of
these only when the type is fully built. Oops. This was really
brokend. Also, when the function type is constructed, consider it
for type canonicalizing.
(build_type_decl): Early canonicalize basic types.
(build_qualified_type_decl, build_pointer_type_def)
(build_pointer_type_def, build_reference_type_def)
(build_array_type_def, build_enum_type_decl, build_typedef_decl):
Handle the canonicalizing for these composite types: either early
or late.
(build_class_decl): Likewise. Also, mark this class a 'being
built' until it's fully built. This helps the canonicalizing code
to know that it should leave a class alone until it's fully built.
* tests/test-ir-walker.cc (struct name_printing_visitor): Adjust
to the visitor methods naming change.
* configure.ac: Generate the tests/runtestcanonicalizetypes.sh
testing script from tests/runtestcanonicalizetypes.sh.in.
* tests/runtestcanonicalizetypes.sh.in: Add the template for the
new runtestcanonicalizetypes.sh script that test for type
canonicalizing.
* tests/Makefile.am: Add the new runtestcanonicalizetypes.sh
regression testing script to the build system.
Signed-off-by: Dodji Seketeli <dodji@redhat.com>
526 lines
11 KiB
C++
526 lines
11 KiB
C++
// -*- Mode: C++ -*-
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//
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// Copyright (C) 2013-2015 Red Hat, Inc.
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//
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// This file is part of the GNU Application Binary Interface Generic
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// Analysis and Instrumentation Library (libabigail). This library is
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// free software; you can redistribute it and/or modify it under the
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// terms of the GNU Lesser General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option) any
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// later version.
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Lesser Public License for more details.
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// You should have received a copy of the GNU Lesser General Public
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// License along with this program; see the file COPYING-LGPLV3. If
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// not, see <http://www.gnu.org/licenses/>.
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/// @file
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#ifndef __ABG_IRFWD_H__
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#define __ABG_IRFWD_H__
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#include <cstddef>
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#include <tr1/memory>
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#include <list>
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#include <vector>
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#include <string>
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#include <tr1/functional>
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#include <typeinfo>
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#include <utility> // for std::rel_ops, at least.
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#include <ostream>
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#include "abg-hash.h"
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/// Toplevel namespace for libabigail.
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namespace abigail
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{
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/**
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@mainpage libabigail
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This is the API documentation of the Application Binary
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Interface Generic Analysis and Instrumentation Library, aka,
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<em>libabigail</em>.
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Check out <a href="http://sourceware.org/libabigail"> the project
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homepage</a>!
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The current libabigail source code can be browsed at
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http://sourceware.org/git/gitweb.cgi?p=libabigail.git
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It can be checked out with:
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<em>git clone git://sourceware.org/git/libabigail.git</em>
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The mailing list to send messages and patches to is
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libabigail@sourceware.org.
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You can hang out with libabigail developers and users on irc at
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irc://irc.oftc.net\#libabigail.
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*/
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// Inject some types.
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using std::tr1::shared_ptr;
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using std::tr1::weak_ptr;
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using std::string;
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using std::vector;
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// Pull in relational operators.
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using namespace std::rel_ops;
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namespace ir
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{
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// Forward declarations for corpus.
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class corpus;
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// Forward declarations for ir.
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class location;
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class location_manager;
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class translation_unit;
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class class_decl;
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class class_tdecl;
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class decl_base;
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class enum_type_decl;
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class function_decl;
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class function_tdecl;
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class function_type;
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class global_scope;
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class node_visitor;
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class location;
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class location_manager;
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class method_type;
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class namespace_decl;
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class parameter;
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class pointer_type_def;
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class qualified_type_def;
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class reference_type_def;
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class scope_decl;
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class scope_type_decl;
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class template_decl;
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class template_parameter;
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class non_type_tparameter;
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class type_tparameter;
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class template_tparameter;
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class type_composition;
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class type_base;
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class type_decl;
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class typedef_decl;
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class var_decl;
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class array_type_def;
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class subrange_type;
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struct type_shared_ptr_equal;
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struct traversable_base;
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shared_ptr<decl_base>
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add_decl_to_scope(shared_ptr<decl_base>, scope_decl*);
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shared_ptr<decl_base>
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add_decl_to_scope (shared_ptr<decl_base>, shared_ptr<scope_decl>);
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const global_scope*
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get_global_scope(const decl_base&);
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const global_scope*
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get_global_scope(const decl_base*);
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const global_scope*
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get_global_scope(const shared_ptr<decl_base>);
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translation_unit*
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get_translation_unit(const decl_base&);
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translation_unit*
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get_translation_unit(const decl_base*);
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translation_unit*
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get_translation_unit(const shared_ptr<decl_base>);
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bool
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is_global_scope(const scope_decl&);
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bool
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is_global_scope(const scope_decl*);
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bool
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is_global_scope(const shared_ptr<scope_decl>);
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bool
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is_at_global_scope(const decl_base&);
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bool
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is_at_global_scope(const shared_ptr<decl_base>);
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bool
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is_at_class_scope(const shared_ptr<decl_base>);
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bool
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is_at_class_scope(const decl_base*);
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bool
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is_at_class_scope(const decl_base&);
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bool
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is_at_template_scope(const shared_ptr<decl_base>);
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bool
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is_template_parameter(const shared_ptr<decl_base>);
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shared_ptr<function_decl>
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is_function_decl(shared_ptr<decl_base>);
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bool
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is_type(const decl_base&);
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shared_ptr<type_base>
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is_type(const shared_ptr<decl_base>);
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shared_ptr<type_decl>
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is_type_decl(const shared_ptr<type_base>);
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shared_ptr<typedef_decl>
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is_typedef(const shared_ptr<type_base>);
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shared_ptr<typedef_decl>
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is_typedef(const shared_ptr<decl_base>);
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shared_ptr<enum_type_decl>
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is_enum_type(const shared_ptr<type_base>&);
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shared_ptr<enum_type_decl>
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is_enum_type(const shared_ptr<decl_base>&);
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bool
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is_class_type(decl_base*);
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shared_ptr<class_decl>
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is_class_type(const shared_ptr<type_base>);
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shared_ptr<class_decl>
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is_class_type(const shared_ptr<decl_base>);
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shared_ptr<pointer_type_def>
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is_pointer_type(const shared_ptr<type_base>);
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shared_ptr<reference_type_def>
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is_reference_type(const shared_ptr<type_base>);
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shared_ptr<qualified_type_def>
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is_qualified_type(const shared_ptr<type_base>);
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shared_ptr<function_type>
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is_function_type(const shared_ptr<type_base>);
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shared_ptr<method_type>
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is_method_type(const shared_ptr<type_base>);
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shared_ptr<class_decl>
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look_through_decl_only_class(shared_ptr<class_decl>);
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shared_ptr<var_decl>
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is_var_decl(const shared_ptr<decl_base>);
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bool
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is_template_parm_composition_type(const shared_ptr<decl_base>);
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bool
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is_template_decl(const shared_ptr<decl_base>);
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bool
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is_function_template_pattern(const shared_ptr<decl_base>);
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shared_ptr<decl_base>
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add_decl_to_scope(shared_ptr<decl_base>, scope_decl*);
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shared_ptr<decl_base>
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add_decl_to_scope(shared_ptr<decl_base>, shared_ptr<scope_decl>);
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shared_ptr<decl_base>
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insert_decl_into_scope(shared_ptr<decl_base>,
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vector<shared_ptr<decl_base> >::iterator,
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scope_decl*);
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shared_ptr<decl_base>
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insert_decl_into_scope(shared_ptr<decl_base>,
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vector<shared_ptr<decl_base> >::iterator,
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shared_ptr<scope_decl>);
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bool
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has_scope(const decl_base&);
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bool
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has_scope(const shared_ptr<decl_base>);
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bool
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is_member_decl(const shared_ptr<decl_base>);
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bool
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is_member_decl(const decl_base*);
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bool
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is_member_decl(const decl_base&);
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bool
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is_member_type(const shared_ptr<type_base>);
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void
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remove_decl_from_scope(shared_ptr<decl_base>);
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bool
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get_member_is_static(const decl_base&);
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bool
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get_member_is_static(const decl_base*);
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bool
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get_member_is_static(const shared_ptr<decl_base>);
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void
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set_member_is_static(decl_base&, bool);
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void
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set_member_is_static(shared_ptr<decl_base>, bool);
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bool
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is_data_member(const var_decl&);
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bool
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is_data_member(const var_decl*);
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bool
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is_data_member(const shared_ptr<var_decl>);
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shared_ptr<var_decl>
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is_data_member(const shared_ptr<decl_base>&);
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shared_ptr<array_type_def>
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is_array_type(const shared_ptr<type_base> decl);
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void
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set_data_member_offset(shared_ptr<var_decl>, size_t);
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size_t
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get_data_member_offset(const var_decl&);
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size_t
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get_data_member_offset(const shared_ptr<var_decl>);
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size_t
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get_data_member_offset(const shared_ptr<decl_base>);
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void
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set_data_member_is_laid_out(shared_ptr<var_decl>, bool);
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bool
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get_data_member_is_laid_out(const var_decl&);
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bool
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get_data_member_is_laid_out(const shared_ptr<var_decl>);
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bool
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is_member_function(const function_decl&);
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bool
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is_member_function(const function_decl*);
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bool
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is_member_function(const shared_ptr<function_decl>);
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bool
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get_member_function_is_ctor(const function_decl&);
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bool
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get_member_function_is_ctor(const shared_ptr<function_decl>);
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void
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set_member_function_is_ctor(const function_decl&, bool);
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void
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set_member_function_is_ctor(const shared_ptr<function_decl>, bool);
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bool
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get_member_function_is_dtor(const function_decl&);
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bool
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get_member_function_is_dtor(const shared_ptr<function_decl>);
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void
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set_member_function_is_dtor(const function_decl&, bool);
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void
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set_member_function_is_dtor(const shared_ptr<function_decl>, bool);
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bool
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get_member_function_is_const(const function_decl&);
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bool
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get_member_function_is_const(const shared_ptr<function_decl>);
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void
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set_member_function_is_const(const function_decl&, bool);
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void
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set_member_function_is_const(const shared_ptr<function_decl>, bool);
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size_t
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get_member_function_vtable_offset(const function_decl&);
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size_t
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get_member_function_vtable_offset(const shared_ptr<function_decl>);
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void
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set_member_function_vtable_offset(const function_decl& f,
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size_t s);
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void
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set_member_function_vtable_offset(const shared_ptr<function_decl> f,
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size_t s);
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bool
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get_member_function_is_virtual(const function_decl&);
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bool
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get_member_function_is_virtual(const shared_ptr<function_decl>);
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bool
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get_member_function_is_virtual(const function_decl*);
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void
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|
set_member_function_is_virtual(const function_decl&, bool);
|
|
|
|
void
|
|
set_member_function_is_virtual(const shared_ptr<function_decl>&, bool);
|
|
|
|
shared_ptr<type_base>
|
|
strip_typedef(const shared_ptr<type_base>);
|
|
|
|
string
|
|
get_type_name(const shared_ptr<type_base>);
|
|
|
|
string
|
|
get_pretty_representation(const decl_base*);
|
|
|
|
string
|
|
get_pretty_representation(const type_base*);
|
|
|
|
string
|
|
get_pretty_representation(const shared_ptr<decl_base>&);
|
|
|
|
string
|
|
get_pretty_representation(const shared_ptr<type_base>&);
|
|
|
|
const decl_base*
|
|
get_type_declaration(const type_base*);
|
|
|
|
decl_base*
|
|
get_type_declaration(type_base*);
|
|
|
|
shared_ptr<decl_base>
|
|
get_type_declaration(const shared_ptr<type_base>);
|
|
|
|
bool
|
|
types_are_compatible(const shared_ptr<type_base>,
|
|
const shared_ptr<type_base>);
|
|
|
|
bool
|
|
types_are_compatible(const shared_ptr<decl_base>,
|
|
const shared_ptr<decl_base>);
|
|
|
|
const scope_decl*
|
|
get_top_most_scope_under(const decl_base*,
|
|
const scope_decl*);
|
|
|
|
const scope_decl*
|
|
get_top_most_scope_under(const shared_ptr<decl_base>,
|
|
const scope_decl*);
|
|
|
|
const scope_decl*
|
|
get_top_most_scope_under(const shared_ptr<decl_base>,
|
|
const shared_ptr<scope_decl>);
|
|
|
|
void
|
|
fqn_to_components(const std::string&,
|
|
std::list<string>&);
|
|
|
|
const shared_ptr<decl_base>
|
|
lookup_type_in_translation_unit(const string&,
|
|
const translation_unit&);
|
|
|
|
const shared_ptr<decl_base>
|
|
lookup_type_in_translation_unit(const std::list<string>&,
|
|
const translation_unit&);
|
|
|
|
const shared_ptr<decl_base>
|
|
lookup_type_in_scope(const string&,
|
|
const shared_ptr<scope_decl>);
|
|
|
|
const shared_ptr<decl_base>
|
|
lookup_type_in_scope(const std::list<string>&,
|
|
const shared_ptr<scope_decl>);
|
|
|
|
const shared_ptr<decl_base>
|
|
lookup_var_decl_in_scope(const string&,
|
|
const shared_ptr<scope_decl>);
|
|
|
|
const shared_ptr<decl_base>
|
|
lookup_var_decl_in_scope(const std::list<string>&,
|
|
const shared_ptr<scope_decl>);
|
|
|
|
string
|
|
demangle_cplus_mangled_name(const string&);
|
|
|
|
shared_ptr<type_base>
|
|
type_or_void(const shared_ptr<type_base>);
|
|
|
|
bool
|
|
type_has_non_canonicalized_subtype(shared_ptr<type_base> t);
|
|
} // end namespace ir
|
|
|
|
using namespace abigail::ir;
|
|
|
|
void
|
|
dump(const shared_ptr<decl_base>, std::ostream&);
|
|
|
|
void
|
|
dump(const shared_ptr<decl_base>);
|
|
|
|
void
|
|
dump(const shared_ptr<type_base>, std::ostream&);
|
|
|
|
void
|
|
dump(const shared_ptr<type_base>);
|
|
|
|
void
|
|
dump(const shared_ptr<var_decl>, std::ostream&);
|
|
|
|
void
|
|
dump(const shared_ptr<var_decl>);
|
|
|
|
void
|
|
dump(const translation_unit&, std::ostream&);
|
|
|
|
void
|
|
dump(const translation_unit&);
|
|
|
|
void
|
|
dump(const shared_ptr<translation_unit>, std::ostream&);
|
|
|
|
void
|
|
dump(const shared_ptr<translation_unit>);
|
|
|
|
void
|
|
dump_decl_location(const decl_base&);
|
|
|
|
void
|
|
dump_decl_location(const decl_base*);
|
|
|
|
void
|
|
dump_decl_location(const shared_ptr<decl_base>&);
|
|
|
|
} // end namespace abigail
|
|
#endif // __ABG_IRFWD_H__
|