Commit Graph

46 Commits

Author SHA1 Message Date
John McCall a8ae222d0e Implement the protected access restriction ([class.protected]), which requires
that protected members be used on objects of types which derive from the
naming class of the lookup.  My first N attempts at this were poorly-founded,
largely because the standard is very badly worded here.

llvm-svn: 100562
2010-04-06 21:38:20 +00:00
John McCall d79b4d8173 Correct the calculation of access to more closely model the wording in
the standard.

llvm-svn: 100155
2010-04-02 00:03:43 +00:00
John McCall b493d53424 Fix an oversight with access control for address-of-function.
llvm-svn: 99942
2010-03-30 22:20:00 +00:00
John McCall 16df1e59f2 Propagate the "found declaration" (i.e. the using declaration instead of
the underlying/instantiated decl) through a lot of API, including "intermediate"
MemberExprs required for (e.g.) template instantiation.  This is necessary
because of the access semantics of member accesses to using declarations:
only the base class *containing the using decl* need be accessible from the
naming class.

This allows us to complete an access-controlled selfhost, if there are no
recent regressions.

llvm-svn: 99936
2010-03-30 21:47:33 +00:00
Douglas Gregor 8933623b91 Optimize PartialDiagnostic's memory-allocation behavior by placing a
cache of PartialDiagnostic::Storage objects into an allocator within
the ASTContext. This eliminates a significant amount of malloc
traffic, for a 10% performance improvement in -fsyntax-only wall-clock
time with 403.gcc's combine.c.

Also, eliminate the RequireNonAbstractType hack I put in earlier,
which was but a symptom of this larger problem.

Fixes <rdar://problem/7806091>.

llvm-svn: 99849
2010-03-29 23:34:08 +00:00
John McCall 3dc81f77f6 Accumulate all functions and classes that the effective context is
nested within, and suddenly local classes start working.  Wouldn't be
necessary if I hadn't used local classes in Clang in the first place.
Or, well, wouldn't be necessary yet. :)

llvm-svn: 99709
2010-03-27 06:55:49 +00:00
John McCall e0b2ddb492 Reapply r99596 with a fix: link an instantiated friend function to its
pattern if it has a body.

llvm-svn: 99610
2010-03-26 04:53:08 +00:00
John McCall 1a78217721 Apparently that didn't work. Reverting for now.
llvm-svn: 99601
2010-03-26 02:38:45 +00:00
John McCall a5beaf6958 Properly instantiate and link in friend function templates.
llvm-svn: 99596
2010-03-26 02:05:14 +00:00
John McCall 27e70baa55 Fix a very minor oversight in privileges-elevation: we were only considering
friendship for a derived class if the base class specifier was non-public,
and thus not considering friendship for non-public members of public bases.

llvm-svn: 99554
2010-03-25 21:39:55 +00:00
John McCall 15ad0962dc Preserve type-source information in friend declarations.
llvm-svn: 99525
2010-03-25 18:04:51 +00:00
John McCall 598b4405a6 Properly instantiate friend class template declarations and link them into
the redeclaration chain.  Recommitted from r99477 with a fix:  we need to
merge in default template arguments from previous declarations.

llvm-svn: 99496
2010-03-25 06:39:04 +00:00
Bob Wilson 63d45e51fb Revert 99477 since it appears to be breaking the clang-x86_64-darwin10-fnt
buildbot.  The tramp3d test fails.
--- Reverse-merging r99477 into '.':
U    test/SemaTemplate/friend-template.cpp
U    test/CXX/temp/temp.decls/temp.friend/p1.cpp
U    lib/Sema/SemaTemplateInstantiateDecl.cpp
U    lib/Sema/SemaAccess.cpp

llvm-svn: 99481
2010-03-25 04:40:43 +00:00
John McCall ac418d44ed Properly instantiate and link in friend-class-template declarations.
llvm-svn: 99477
2010-03-25 02:56:08 +00:00
John McCall 69f7586c5b Walk out of enums when determining effective context.
llvm-svn: 99391
2010-03-24 09:04:37 +00:00
John McCall 816d75b701 Support friend function specializations.
llvm-svn: 99389
2010-03-24 07:46:06 +00:00
John McCall c62bb64c65 Implement a framework for the delay of arbitrary diagnostics within
templates.  So delay access-control diagnostics when (for example) the target
of a friend declaration is a specific specialization of a template.

I was surprised to find that this was required for an access-controlled selfhost.

llvm-svn: 99383
2010-03-24 05:22:00 +00:00
John McCall a0296f7987 Remember the "found declaration" for an overload candidate, which is the
entity (if applicable) which was actually looked up.  If a candidate was found
via a using declaration, this is the UsingShadowDecl;  otherwise, if
the candidate is template specialization, this is the template;  otherwise,
this is the function.

The point of this exercise is that "found declarations" are the entities
we do access control for, not their underlying declarations.  Broadly speaking,
this patch fixes access control for using declarations.

There is a *lot* of redundant code calling into the overload-resolution APIs;
we really ought to clean that up.

llvm-svn: 98945
2010-03-19 07:35:19 +00:00
John McCall a332b953e8 When elevating access along an inheritance path, initialize the computed
access to the (elevated) access of the accessed declaration, if applicable,
rather than plunking that access onto the end after we've calculated the
inheritance access.

Also, being a friend of a derived class gives you public access to its
members (subject to later modification by further inheritance);  it does
not simply ignore a single location of restricted inheritance.

Also, when computing the best unprivileged path to a subobject, preserve
the information that the worst path might be AS_none (forbidden) rather
than a minimum of AS_private.

llvm-svn: 98899
2010-03-18 23:49:19 +00:00
John McCall fb6f52671a from code inspection, we were treating placement news with one argument as
non-placement news when selecting the corresponding operator delete;  this is
fixed.
Access and ambiguity control for calls to operator new and delete.  Also AFAICT

llvm-svn: 98818
2010-03-18 08:19:33 +00:00
John McCall 39e8288b40 Implement non-dependent friend functions and classes.
llvm-svn: 98764
2010-03-17 20:01:29 +00:00
John McCall fb803d7dcb Grant nested classes the access privileges of their enclosing classes.
llvm-svn: 98710
2010-03-17 04:58:56 +00:00
John McCall ab8c273b4f Access control for implicit calls to copy assignment operators and copy
constructors from implicitly-defined members.

llvm-svn: 98614
2010-03-16 06:11:48 +00:00
John McCall 1064d7ef29 Perform access control for the implicit base and member destructor calls
required when emitting a destructor definition.

llvm-svn: 98609
2010-03-16 05:22:47 +00:00
John McCall 16927f6274 Implement basic support for friend types and functions in non-dependent
contexts.

llvm-svn: 98321
2010-03-12 01:19:31 +00:00
John McCall 5b0829a321 Improve access control diagnostics. Perform access control on member-pointer
conversions.  Fix an access-control bug where privileges were not considered
at intermediate points along the inheritance path.  Prepare for friends.

llvm-svn: 95775
2010-02-10 09:31:12 +00:00
John McCall 03c4848bf4 Mark dtors for parameter variables and eliminate some redundant type munging.
llvm-svn: 95079
2010-02-02 09:10:11 +00:00
John McCall 6781b05a92 Access control for implicit destructor calls. Diagnostic could be orders of
magnitude clearer.

llvm-svn: 95078
2010-02-02 08:45:54 +00:00
John McCall 760af170ff Access checking for implicit user-defined conversions.
llvm-svn: 94971
2010-02-01 03:16:54 +00:00
John McCall b3a4400554 Access checking for overloaded operators.
llvm-svn: 94725
2010-01-28 01:42:12 +00:00
John McCall 86121519ca Implement access-check delays for out-of-line member definitions
using the same framework we use for deprecation warnings.

llvm-svn: 94659
2010-01-27 03:50:35 +00:00
John McCall 58cc69d4c1 Implement access control for overloaded functions. Suppress access control
diagnostics in "early" lookups, such as during typename checks and when building
unresolved lookup expressions.

llvm-svn: 94647
2010-01-27 01:50:18 +00:00
John McCall 553c0796ee Implement elementary access control.
llvm-svn: 94268
2010-01-23 00:46:32 +00:00
John McCall 0a4bb26ed0 Set a member's access specifier even if it doesn't match the previous specifier.
Prevents an assert on successive redeclarations.

Fixed PR5573.

llvm-svn: 91956
2009-12-23 00:37:40 +00:00
Douglas Gregor 36d1b14dde Refactor the code that walks a C++ inheritance hierarchy, searching
for bases, members, overridden virtual methods, etc. The operations
isDerivedFrom and lookupInBases are now provided by CXXRecordDecl,
rather than by Sema, so that CodeGen and other clients can use them
directly.

llvm-svn: 83396
2009-10-06 17:59:45 +00:00
Mike Stump 11289f4280 Remove tabs, and whitespace cleanups.
llvm-svn: 81346
2009-09-09 15:08:12 +00:00
Sebastian Redl e644e19671 Enhance testing of overriding exception specs for inaccessible base exceptions.
llvm-svn: 76317
2009-07-18 14:32:15 +00:00
Anders Carlsson 49d216db15 Add a new, more advanced CheckDerivedToBaseConversion that takes custom diagnostic IDs.
llvm-svn: 71720
2009-05-13 21:11:42 +00:00
Anders Carlsson 5879fbd933 Disable access control by default. It can be enabled with the -faccess-control option. When we have better support for it, we can enable it by default again.
llvm-svn: 71706
2009-05-13 19:49:53 +00:00
Anders Carlsson 72f307a26e Revert Sebastian's rvalue patch (r67870) since it caused test failures in
SemaCXX//overload-member-call.cpp
SemaCXX//overloaded-operator.cpp
SemaTemplate//instantiate-method.cpp

llvm-svn: 67912
2009-03-28 04:17:27 +00:00
Anders Carlsson 0cb4cc106c Implement access checking for protected base classes.
llvm-svn: 67887
2009-03-28 01:09:05 +00:00
Anders Carlsson af06b977f9 It is OK to cast to a private base class if the current member belongs to the class that the private base class is a base of:
class A {};
class B : private A {
  void f(B *b) { A* a = b; }
};

llvm-svn: 67860
2009-03-27 19:01:12 +00:00
Anders Carlsson 733d77f1b4 Implement checking for base class access. Right now it's overly conservative but that will change. (Also, protected isn't implemented right now).
llvm-svn: 67827
2009-03-27 06:03:27 +00:00
Anders Carlsson 4742a9c19a Add a stubbed out CheckBaseClassAccess method.
llvm-svn: 67821
2009-03-27 05:05:05 +00:00
Anders Carlsson 17941120d6 Move Sema::SetMemberAccessSpecifier to SemaAccess.cpp
llvm-svn: 67820
2009-03-27 04:54:36 +00:00
Anders Carlsson 8ed6f3645b Add SemaAccess.cpp
llvm-svn: 67819
2009-03-27 04:43:36 +00:00