Commit Graph

1243 Commits

Author SHA1 Message Date
Chandler Carruth 599deef379 Add a simple new warning to catch blatantly dangling pointer and
reference members of classes. We've had several bugs reported because of
this, and there's no reason not to flag it right away in the compiler.

Comments especially welcome on the strategy for implementing this
warning (IE, what should trigger this?) and on the text of the warning
itself.

I'm going to extend this to cover obvious cases with temporaries and
beef up the test cases some in subsequent patches. I'll then run it over
a large codebase and make sure its not misbehaving before I add it to
-Wall or turn it on by default. I think this one might be a good
candidate for on by default.

llvm-svn: 139075
2011-09-03 01:14:15 +00:00
Douglas Gregor 528499bb44 When defining the implicit move assignment operator, don't perform
semantic analysis when taking the address of an xvalue. Instead, just
build the unary operator directly, since it's safe to do so (from the
IRgen and AST perspectives) for any glvalue. Fixes PR10822.

llvm-svn: 138935
2011-09-01 02:09:07 +00:00
Douglas Gregor 86325ad2b5 Allow C99 hexfloats in C++0x mode. This change resolves the standards
collision between C99 hexfloats and C++0x user-defined literals by
giving C99 hexfloats precedence. Also, warning about user-defined
literals that conflict with hexfloats and those that have names that
are reserved by the implementation. Fixes <rdar://problem/9940194>.

llvm-svn: 138839
2011-08-30 22:40:35 +00:00
Sebastian Redl 22653bac1a Declare and define implicit move constructor and assignment operator.
This makes the code duplication of implicit special member handling even worse,
but the cleanup will have to come later. For now, this works.
Follow-up with tests for explicit defaulting and enabling the __has_feature
flag to come.

llvm-svn: 138821
2011-08-30 19:58:05 +00:00
Richard Smith a77a0a6bf2 Track in the AST whether a function is constexpr.
llvm-svn: 137653
2011-08-15 21:04:07 +00:00
Francois Pichet 00c7e6ceb1 Implement function template specialization at class scope extension in Microsoft mode. A new AST node is introduced: ClassScopeFunctionSpecialization. This node holds a FunctionDecl that is not yet specialized; then during the class template instantiation the ClassScopeFunctionSpecialization will spawn the actual function specialization.
Example:
template <class T>
class A {
public:
  template <class U> void f(U p) {  }
  template <> void f(int p) {  } // <== class scope specialization
};

This extension is necessary to parse MSVC standard C++ headers, MFC and ATL code.
BTW, with this feature in, clang can parse (-fsyntax-only) all the MSVC 2010 standard header files without any error.

llvm-svn: 137573
2011-08-14 03:52:19 +00:00
Douglas Gregor 5c076db18e When adding the base and member initializers for an implicitly-defined
special member function, make sure to classify an explicitly-defaulted
copy constructor as a "copy" operation. Fixes PR10622.

llvm-svn: 137219
2011-08-10 16:51:53 +00:00
Douglas Gregor 493627ba8b Rewrite default initialization of anonymous structs/unions within a
constructor. Previously, we did some bogus recursion into the fields
of anonymous structs (recursively), which ended up building invalid
ASTs that would cause CodeGen to crash due to invalid GEPs.

Now, we instead build the default initializations based on the
indirect field declarations at the top level, which properly generates
the sequence of GEPs needed to initialize the proper member. Fixes
PR10512 and <rdar://problem/9924046>.

llvm-svn: 137212
2011-08-10 15:22:55 +00:00
Fariborz Jahanian c1a151bed9 Don't emit memcpy for copying fields of arrays of volatile elements.
Use the the path that generates a loop. This fixes
bogus error that clang puts out. // rdar://9894548

llvm-svn: 137080
2011-08-09 00:26:11 +00:00
Douglas Gregor 4daf6a30e7 Lazily deserialize Sema::VTableUses. Plus, fix the utterly and
completely broken deserialization mapping code we had for VTableUses,
which would have broken horribly as soon as our local-to-global ID
mapping became interesting.

llvm-svn: 136371
2011-07-28 19:11:31 +00:00
Douglas Gregor bae31201bb Turn Sema::DelegatingCtorDecls into a LazyVector.
llvm-svn: 136273
2011-07-27 21:57:17 +00:00
Chandler Carruth 35f5320d8e Mechanically rename SourceManager::getInstantiationLoc and
FullSourceLoc::getInstantiationLoc to ...::getExpansionLoc. This is part
of the API and documentation update from 'instantiation' as the term for
macros to 'expansion'.

llvm-svn: 135914
2011-07-25 16:49:02 +00:00
Chris Lattner 0e62c1cc0b remove unneeded llvm:: namespace qualifiers on some core types now that LLVM.h imports
them into the clang namespace.

llvm-svn: 135852
2011-07-23 10:55:15 +00:00
Eric Christopher 6f228b5a53 Speculatively revert 135649 to bring back the g++ testing bots.
llvm-svn: 135668
2011-07-21 05:34:24 +00:00
Alexis Hunt 4ace035c55 When copping out on a friend template declaration, be sure to mark its
access specifier as public.

llvm-svn: 135649
2011-07-21 00:59:23 +00:00
Richard Smith e3daab2449 Replace r134583's fix for PR10290 with one which also works for non-value-dependent cases.
llvm-svn: 135543
2011-07-20 00:12:52 +00:00
Douglas Gregor d29fde248e Eliminate an incomplete/incorrect attempt to provide support for C++0x
unrestricted unions, which ended up attempting to initialize objects
in a union (which CodeGen isn't prepared for). Fixes PR9683.

llvm-svn: 135027
2011-07-13 02:14:02 +00:00
Fariborz Jahanian 7f4427fc60 Fix a bug where a local variable named 'self' is causing
implicit ivar accesses to go through the 'self' variable
rather than the real 'self' for the method. // rdar://9730771

llvm-svn: 134992
2011-07-12 17:16:56 +00:00
Abramo Bagnara dd8fc04e9b Fixed PR10243.
llvm-svn: 134892
2011-07-11 08:52:40 +00:00
Douglas Gregor 750734c677 Don't try to type-check a copy construction of an exception
declaration with dependent type. Fixes PR10232 /
<rdar://problem/9700653>.

llvm-svn: 134515
2011-07-06 18:14:43 +00:00
Douglas Gregor 1fe12c9eba ActOnCXXConditionDeclaration should take into account that
ActOnDeclarator can return NULL. Fixes PR10270, from Hans Wennborg!

llvm-svn: 134416
2011-07-05 16:13:20 +00:00
Douglas Gregor c2fa169d6c Add support for C++ namespace-aware typo correction, e.g., correcting
vector<int>

to

  std::vector<int>

Patch by Kaelyn Uhrain, with minor tweaks + PCH support from me. Fixes
PR5776/<rdar://problem/8652971>.

Thanks Kaelyn!

llvm-svn: 134007
2011-06-28 16:20:02 +00:00
Argyrios Kyrtzidis 8ea7e5838b Remove the call to GetTypeForDeclarator in Sema::ActOnCXXConditionDeclaration.
No functionality change.

llvm-svn: 133984
2011-06-28 03:01:12 +00:00
Richard Smith cfcdf3a659 Fix a couple more issues related to r133854:
When performing semantic analysis on a member declaration, fix the check for whether we are declaring a function to check for parenthesized declarators, declaration via decltype, etc.

Also fix the semantic check to not treat FuncType* as a function type.

llvm-svn: 133862
2011-06-25 02:28:38 +00:00
Fariborz Jahanian 831f0fc2e0 Support for catching objc pointer objects in c++ catch-statement
in fragile abi mode and some other cleanups. // rdar://8940528

llvm-svn: 133747
2011-06-23 19:00:08 +00:00
Fariborz Jahanian 0a3cfcc87f Alloa catching Objective-C id's being thrown with C++ throw
in Darwin's fragile abi mode.  // rdar://8940528

llvm-svn: 133639
2011-06-22 20:21:51 +00:00
Manuel Klimek f2b4b69346 Changes ParenListExpr to always require a type.
Removes dead code found in the process.
Adds a test to verify that ParenListExprs do not have NULL types.

llvm-svn: 133637
2011-06-22 20:02:16 +00:00
Alexis Hunt d74c85fdcc Ensure that we delete implict copy members when explicit move members
are also present.

llvm-svn: 133593
2011-06-22 01:05:13 +00:00
Alexis Hunt 491ec60802 Attempt to reapply this patch for caching copy assignment operator
lookup. Previously, it was breaking self-host, but it's been a week and
a half and I can't reproduce, so I need to see if it's still failing.

llvm-svn: 133581
2011-06-21 23:42:56 +00:00
NAKAMURA Takumi 5364847a84 De-Unicode-ify in comments.
llvm-svn: 133501
2011-06-21 03:19:28 +00:00
John McCall 1b1a1dbbe7 When synthesizing implicit copy/move constructors and copy/move assignment
operators, don't make an initializer or sub-operation for zero-width
bitfields.

llvm-svn: 133221
2011-06-17 00:18:42 +00:00
John McCall 31168b077c Automatic Reference Counting.
Language-design credit goes to a lot of people, but I particularly want
to single out Blaine Garst and Patrick Beard for their contributions.

Compiler implementation credit goes to Argyrios, Doug, Fariborz, and myself,
in no particular order.

llvm-svn: 133103
2011-06-15 23:02:42 +00:00
Richard Smith 938f40b5aa Implement support for C++11 in-class initialization of non-static data members.
llvm-svn: 132878
2011-06-11 17:19:42 +00:00
Alexis Hunt b1b368f36d This change is breaking selfhost. Revert it until I have more time
to study it.

llvm-svn: 132843
2011-06-10 12:07:09 +00:00
Alexis Hunt ff0ff6549d Implement caching of copy assignment operator lookup.
I believe, upon, careful review, that this code causes us to incorrectly
handle exception specifications of copy assignment operators in C++03
mode. However, we currently do not seem to properly implement the subtle
distinction between copying of members and bases made by implicit copy
constructors and assignment operators in C++03 - namely that they are
limited in their overload selection - in all cases. As such, I feel that
committing this code is correct pending a careful review of our
implementation of these semantics.

llvm-svn: 132841
2011-06-10 09:24:41 +00:00
Alexis Hunt 899bd447cf Implement caching for copy constructors in similar situations.
llvm-svn: 132835
2011-06-10 04:44:37 +00:00
Alexis Hunt eef8ee0c8d Implement caching of default constructors on the resolution table. This
isn't yet used for the less controlled environments of initialization.

Also a few random text fixups.

llvm-svn: 132833
2011-06-10 03:50:41 +00:00
Sebastian Redl c7ca587512 Remove all references to InitializationSequence::FailedSequence from outside SemaInit.cpp. Replace them with the boolean conversion or the new Failed() function. This is a first step towards removing InitializationSequence::SequenceKind. No functionality change.
llvm-svn: 132664
2011-06-05 12:23:28 +00:00
Alexis Hunt d051b87160 Implement a new warning for when adding a default argument to a method
makes it into a special member function. This is very bad and can lead
to all sorts of nastiness including implicit member functions violating
the One Definition Rule. This should probably be made ill-formed in a
later version of the standard, but for now we'll just warn.

llvm-svn: 132104
2011-05-26 01:26:05 +00:00
Alexis Hunt 119c10ef23 Update our diagnostics to properly account for move operations.
llvm-svn: 132096
2011-05-25 23:16:36 +00:00
Alexis Hunt fcaeae4929 Implement a little bit of cleanup and a lot more of the base work
behind implicit moves. We now correctly identify move constructors and
assignment operators and update bits on the record correctly. Generation
of implicit moves (declarations or definitions) is not yet supported.

llvm-svn: 132080
2011-05-25 20:50:04 +00:00
Alexis Hunt 61ae8d395e Implement explicit specialization of explicitly-defaulted constructors.
The general out-of-line case (including explicit instantiation mostly
works except that the definition is being lost somewhere between the AST
and CodeGen, so the definition is never emitted.

llvm-svn: 131933
2011-05-23 23:14:04 +00:00
Alexis Hunt 1fb4e76218 Correctly propagate defaultedness across template instantiation. This
fixes PR9965, but we're not out of the water yet, as we do not
successfully handle out-of-line definitions, due to my utter
misunderstanding of how we manage templates.

llvm-svn: 131920
2011-05-23 21:07:59 +00:00
Francois Pichet efb1af9ae8 Emulate a MSVC bug where if during an using declaration name lookup, the declaration found is unaccessible (private) and that declaration was bring into scope via another using declaration whose target declaration is accessible (public) then no error is generated.
Example:
class A { public: int f();  };
class B : public A { private: using A::f; };
class C : public B { private: using B::f; };

Here, B::f is private so this should fail in Standard C++, but because B::f refers to A::f which is public MSVC accepts it.

This fixes 1 error when parsing MFC code with clang.

llvm-svn: 131896
2011-05-23 03:43:44 +00:00
Alexis Hunt a671bca618 Add a missing case for default constructor deletion.
This case is tested by the fact that the modified test produces
significatly worse diagnostics. That's on the list.

llvm-svn: 131759
2011-05-20 21:43:47 +00:00
Douglas Gregor a912197fff Downgrade the error about re-opening an inline namespace as non-inline
to a warning, since apparently libstdc++'s debug mode does this (and
we can recover safely). Add a Fix-It to insert the "inline", just for kicks.

llvm-svn: 131732
2011-05-20 15:48:31 +00:00
Sebastian Redl 623ea82a6b Reapply r121528, fixing PR9941 by delaying the exception specification check for destructors until the class is complete and destructors have been adjusted.
llvm-svn: 131632
2011-05-19 05:13:44 +00:00
Alexis Hunt 1647354ec9 After consultation with doug, revert r131515.
llvm-svn: 131574
2011-05-18 20:57:13 +00:00
Alexis Hunt d0cdd1fab1 Revert r121528 as it breaks a simple testcase, which leads to, among
other things, libcxx not building.

llvm-svn: 131573
2011-05-18 20:57:11 +00:00
Sebastian Redl b900f04ccc Implement implicit exception specifications of destructors.
llvm-svn: 131528
2011-05-18 05:20:56 +00:00
Alexis Hunt e77a28f7e1 Implement an additional fix for infinite recursion of deleted special
member functions by making sure that they're on the record before
checking for deletion.

Also make sure source locations are valid to avoid crashes.

Unfortunately, the declare-all-implicit-members approach is still
required in order to ensure that dependency loops do not result in
incorrectly deleting functions (since they are to be deleted at the
declaration point per the standard).

Fixes PR9917

llvm-svn: 131520
2011-05-18 03:41:58 +00:00
Alexis Hunt 2430a6fb91 Force declaration of implicit members in C++0x mode.
I hear at least one person crying out in anguish, but it's unfortunately
necessary to avoid infinite loops with mutually dependent constructors
trying to call each other and determine if they are deleted.

It might be possible to go back to the old behavior if we can implement
part-of-file lookups efficiently, or if a solution is discovered by
which we can safely detect and avoid infinite recusion.

llvm-svn: 131515
2011-05-18 01:06:45 +00:00
Alexis Hunt 604aeb3849 Fix some minor bugs and add a lot more test cases for defaulted
constructors, including two more FIXMEs (one of which I don't actually
understand).

llvm-svn: 131487
2011-05-17 20:44:43 +00:00
Alexis Hunt 8b4551844c Implement some tests for defaulted constructors. To do this I had to
suppress an error we were previously emitting on valid union code.

llvm-svn: 131440
2011-05-17 00:19:05 +00:00
Alexis Hunt c9a5573ef1 What I hope to be an implementation of defaulted copy assignment
operators.

llvm-svn: 131338
2011-05-14 05:23:28 +00:00
Alexis Hunt b2f2780a16 More progress towards defaulted copy assignment
llvm-svn: 131337
2011-05-14 05:23:24 +00:00
Alexis Hunt 119f365d31 Start implementing defaulted copy assignment
llvm-svn: 131336
2011-05-14 05:23:20 +00:00
Alexis Hunt b5b14c8b8f Fix copy constructor deletion detection with array types.
This fixes PR9910

llvm-svn: 131309
2011-05-13 21:10:11 +00:00
Alexis Hunt 913820daf0 Defaulting copy constructors now works reasonably well.
One more special member to go

llvm-svn: 131287
2011-05-13 06:10:58 +00:00
Alexis Hunt 1f69a02fb9 Implement defaulting of destructors.
llvm-svn: 131260
2011-05-12 22:46:29 +00:00
Alexis Hunt f9172946be Hrm
llvm-svn: 131259
2011-05-12 22:46:25 +00:00
Alexis Hunt 5a7fa250ab Properly parse the 'default' and 'delete' keywords.
They are actually grammatically considered definitions and parsed
accordingly.

This fixes the outstanding bugs regarding defaulting functions after
their declarations.

We now really nicely diagnose the following construct (try it!)

int foo() = delete, bar;

Still todo: Defaulted functions other than default constructors
            Test cases (including for the above construct)

llvm-svn: 131228
2011-05-12 06:15:49 +00:00
Alexis Hunt f92197cf96 Make it so that we actually generate definitions for explicitly
defaulted default constructors.

As it happens, making sure that we handle out-of-line defaulted
functions properly will involved making sure that we actually parse them
correctly, so that's coming after.

llvm-svn: 131224
2011-05-12 03:51:51 +00:00
Alexis Hunt b315302bf9 Implement deletion of explicitly defaulted default constructors.
We still don't parse out-of-line defaults correctly, which is needed to
get the full effect out of this patch.

llvm-svn: 131223
2011-05-12 03:51:48 +00:00
Alexis Hunt 466627ca2e Commit some missing changes to the previous patch.
This means we get C++0x jump-across-intializer semantics correct.

llvm-svn: 131204
2011-05-11 22:50:12 +00:00
Alexis Hunt ea6f0320f0 Implement implicit deletion of default constructors.
Yes, I'm aware that the diagnostics are awful.

Tests to follow.

llvm-svn: 131203
2011-05-11 22:34:38 +00:00
Alexis Hunt 80f00ff95d Re-do R131114 without breaking code.
I've edited one diagnostic which would print "copy constructor" for copy
constructors and "constructor" for any other constructor. If anyone is
extremely enamored with this, it can be reinstated with a simple boolean
flag rather than calling getSpecialMember, which is inappropriate.

llvm-svn: 131143
2011-05-10 19:08:14 +00:00
Douglas Gregor 972fe534ed Reimplement Sema::MatchTemplateParametersToScopeSpecifier() based on
the semantic context referenced by the nested-name-specifier rather
than the syntactic form of the nested-name-specifier. The previous
incarnation was based on my complete misunderstanding of C++
[temp.expl.spec]. The latest C++0x working draft clarifies the
requirements here, and this rewrite is intended to follow that.

Along the way, improve source location information in the
diagnostics. For example, if we report that a specific type needs or
doesn't need a 'template<>' header, we dig out that type in the
nested-name-specifier and highlight its range.

Fixes: PR5907, PR9421, PR8277, PR8708, PR9482, PR9668, PR9877, and
<rdar://problem/9135379>.

llvm-svn: 131138
2011-05-10 18:27:06 +00:00
Rafael Espindola 5fe6d35770 Revert 131114. This fixes PR9884.
llvm-svn: 131126
2011-05-10 14:12:22 +00:00
Alexis Hunt 6d5b96c6b3 Further implement defaulting constructors.
Focus is on default constructors for the time being. Currently the
exception specification and prototype are processed correctly. Codegen
might work but in all likelihood doesn't.

Note that due to an error, out-of-line defaulting of member functions is
currently impossible. It will continue to that until I muster up the
courage to admit that I secretly pray to epimetheus and that I need to
rework the way default gets from Parse -> Sema.

llvm-svn: 131115
2011-05-10 00:49:42 +00:00
Alexis Hunt be3f9ecd18 The last of the trivial constructor changes, make CXXSpecialMember
reflect our new, more accurate AST.

llvm-svn: 131114
2011-05-10 00:41:46 +00:00
Alexis Hunt 88c75c311f Clean up trivial default constructors now.
hasTrivialDefaultConstructor() really really means it now.

Also implement a fun standards bug regarding aggregates. Doug, if you'd
like, I can un-implement that bug if you think it is truly a defect.

The bug is that non-special-member constructors are never considered
user-provided, so the following is an aggregate:

struct foo {
  foo(int);
};

It's kind of bad, but the solution isn't obvious - should

struct foo {
  foo (int) = delete;
};

be an aggregate or not?

Lastly, add a missing initialization to FunctionDecl.

llvm-svn: 131101
2011-05-09 21:45:35 +00:00
Alexis Hunt f479f1b7e4 Rename "hasTrivialConstructor" to "hasTrivialDefaultConstructor" and
modify the semantics slightly to accomodate default constructors (I
hope).

llvm-svn: 131087
2011-05-09 18:22:59 +00:00
Douglas Gregor b578fbe0f2 When checking for a prior declaration of the name of a namespace, skip
any names that aren't in the appropriate identifier namespaces. Fixes
an embarrassing bug where we give a redefinition error due to an
Objective-C category (<rdar://problem/9388207>).

llvm-svn: 131036
2011-05-06 23:28:47 +00:00
Alexis Hunt 83dc3e89c3 Per Richard's suggestion, rename DefLoc to DefaultLoc where it appears.
llvm-svn: 131018
2011-05-06 21:24:28 +00:00
Alexis Hunt 4a8ea1092a Modify some deleted function methods to better reflect reality:
- New isDefined() function checks for deletedness
 - isThisDeclarationADefinition checks for deletedness
 - New doesThisDeclarationHaveABody() does what
   isThisDeclarationADefinition() used to do
 - The IsDeleted bit is not propagated across redeclarations
 - isDeleted() now checks the canoncial declaration
 - New isDeletedAsWritten() does what it says on the tin.
 - isUserProvided() now correct (thanks Richard!)

This fixes the bug that we weren't catching

void foo() = delete;
void foo() {}

as being a redefinition.

llvm-svn: 131013
2011-05-06 20:44:56 +00:00
Alexis Hunt 5dafebc89f Do defaulted constructors properly.
Explictly defaultedness is correctly reflected on the AST, but there are
no changes to how that affects the definition of functions or much else
really.

llvm-svn: 130974
2011-05-06 01:42:00 +00:00
Alexis Hunt 58dad7d978 Revert r130912 in order to approach defaulted functions from the other
direction and not introduce things in the wrong place three different
times.

llvm-svn: 130968
2011-05-06 00:11:07 +00:00
Richard Smith 3f1b5d077b Implement support for C++0x alias templates.
llvm-svn: 130953
2011-05-05 21:57:07 +00:00
Alexis Hunt 1adeff92bc Implement some framework for defaulted constructors.
There's some unused stuff for now.

llvm-svn: 130912
2011-05-05 03:36:28 +00:00
Alexis Hunt e262299b72 Change cycle detection to be based off of a warning flag.
llvm-svn: 130898
2011-05-05 00:05:47 +00:00
Alexis Hunt 27a761d5bd there i fixed it
Increase robustness of the delegating constructor cycle detection
mechanism. No more infinite loops on invalid or logic errors leading to
false results. Ensure that this is maintained correctly accross
serialization.

llvm-svn: 130887
2011-05-04 23:29:54 +00:00
Alexis Hunt 6118d6642b Implement a better version of delegating constructor cycle detection.
This is more efficient as it's all done at once at the end of the TU.
This could still get expensive, so a flag is provided to disable it. As
an added bonus, the diagnostics will now print out a cycle.

The PCH test is XFAILed because we currently can't deal with a note
emitted in the header and I, being tired, see no other way to verify the
serialization of delegating constructors. We should probably address
this problem /somehow/ but no good solution comes to mind.

llvm-svn: 130836
2011-05-04 05:57:24 +00:00
Alexis Hunt 159bdaa50e Ensure that delegating constructor loop detection uses canonical
declarations.

llvm-svn: 130821
2011-05-04 01:19:04 +00:00
Alexis Hunt 9d47faf686 Ensure that destructors are properly inovked when an exception leaves
the body of a delegating constructor call.

This means that the delegating constructor implementation should be
complete and correct, though there are some rough edges (diagnostic
quality with the cycle detection and using a deleted destructor).

llvm-svn: 130803
2011-05-03 23:05:34 +00:00
Alexis Hunt 5583d56ddb Move the AST modifications to after the cycle detection in
lib/Sema/SemaDeclCXX.cpp to avoid getting stuck in an infinite loop. See
the comment for more explanation.

llvm-svn: 130788
2011-05-03 20:43:02 +00:00
Nick Lewycky 82e478009f Remove unused variable, but keep function call with side-effect.
llvm-svn: 130678
2011-05-02 01:07:19 +00:00
Alexis Hunt 61bc173784 Fully implement delegating constructors!
As far as I know, this implementation is complete but might be missing a
few optimizations. Exceptions and virtual bases are handled correctly.

Because I'm an optimist, the web page has appropriately been updated. If
I'm wrong, feel free to downgrade its support categories.

llvm-svn: 130642
2011-05-01 07:04:31 +00:00
Sebastian Redl ab238a7d18 Synthesizing the definition of an implicit member is an AST modification, so notify any mutation listeners of it. This fixes a crasher in chained PCH, where an implicit destructor in a PCH gets a definition in a chained PCH, which is then lost. However, any further use of the destructor would cause its definition to be regenerated in the final file, hiding the bug.
llvm-svn: 130103
2011-04-24 16:28:06 +00:00
Douglas Gregor 9750969178 At the end of the translation unit, defining a vtable can introduce
new templates that need to be instantiated and vice-versa. Iterate
until we've instantiated all required templates and defined all
required vtables. Fixed PR9325 / <rdar://problem/9055177>.

llvm-svn: 130023
2011-04-22 22:25:37 +00:00
Francois Pichet 1c229c0472 Add -fdelayed-template-parsing option. Using this option all templated function definitions are parsed at the end of the translation unit only if it is required by an actual instantiation. As such all the symbols of the TU are available during name lookup.
Using this flag is necessary for compatibility with Microsoft template code.
This also provides some parsing speed improvement.

llvm-svn: 130022
2011-04-22 22:18:13 +00:00
Argyrios Kyrtzidis 8e4be0b1ea Don't enter a qualified scope for an invalid decl.
Fixes assertion later on. rdar://9122937 & http://llvm.org/PR9459

llvm-svn: 130006
2011-04-22 18:52:25 +00:00
Francois Pichet 9392165a17 For consistency, change suffix from war_ to warn_ for some Microsoft warnings I introduced lately.
llvm-svn: 129986
2011-04-22 08:25:24 +00:00
Richard Smith dda56e4b4a Support for C++11 (non-template) alias declarations.
llvm-svn: 129567
2011-04-15 14:24:37 +00:00
Francois Pichet 8cb243a78f Refactor 129240 to merge the old default argument into the new parameter.
llvm-svn: 129242
2011-04-10 04:58:30 +00:00
Francois Pichet 53fe2bb29e MSVC accepts that default parameters be redefined for member functions
of template class. The new value is ignored.

This fixes 1 error when parsing MSVC 2010 header files with clang.

llvm-svn: 129240
2011-04-10 03:03:52 +00:00
John Wiegley 0129629fd3 Use ExprResult& instead of Expr *& in Sema
This patch authored by Eric Niebler.

Many methods on the Sema class (e.g. ConvertPropertyForRValue) take Expr
pointers as in/out parameters (Expr *&).  This is especially true for the
routines that apply implicit conversions to nodes in-place.  This design is
workable only as long as those conversions cannot fail.  If they are allowed
to fail, they need a way to report their failures.  The typical way of doing
this in clang is to use an ExprResult, which has an extra bit to signal a
valid/invalid state.  Returning ExprResult is de riguour elsewhere in the Sema
interface.  We suggest changing the Expr *& parameters in the Sema interface
to ExprResult &.  This increases interface consistency and maintainability.

This interface change is important for work supporting MS-style C++
properties.  For reasons explained here
<http://lists.cs.uiuc.edu/pipermail/cfe-dev/2011-February/013180.html>,
seemingly trivial operations like rvalue/lvalue conversions that formerly
could not fail now can.  (The reason is that given the semantics of the
feature, getter/setter method lookup cannot happen until the point of use, at
which point it may be found that the method does not exist, or it may have the
wrong type, or overload resolution may fail, or it may be inaccessible.)

llvm-svn: 129143
2011-04-08 18:41:53 +00:00
Nico Weber cc2b8717c5 Make -Wheader-hygiene not complain about USING_NAMESPACE_THROUGH_MACRO in a non-header file.
llvm-svn: 128780
2011-04-02 19:45:15 +00:00
Matt Beaumont-Gay 93615d9912 Fix PR9572 and neighboring lurking crashers.
llvm-svn: 128401
2011-03-28 01:39:13 +00:00
Chandler Carruth 86d17d3f76 Reduce indentation using early exits and add a couple of comments. No
functionality changed.

llvm-svn: 128396
2011-03-27 21:26:48 +00:00
Douglas Gregor a172e08824 Improve -Wheader-hygiene to warn about using directives inside linkage
specifications within the global scope, from Elliot Glaysher.

llvm-svn: 128352
2011-03-26 22:25:30 +00:00
Anders Carlsson 65c76d3826 Fixup comments.
llvm-svn: 128280
2011-03-25 14:55:14 +00:00
Anders Carlsson 30f29444c0 Get rid of handling of the 'explicit' keyword from class-head. We still parse it though, although that will change shortly.
llvm-svn: 128277
2011-03-25 14:31:08 +00:00
Nick Lewycky d469321186 Apply the nonnull attribute to constructor expressions too.
llvm-svn: 128253
2011-03-25 01:44:32 +00:00
Anders Carlsson 98766db785 Add a new warning for exit-time destructors.
llvm-svn: 128188
2011-03-24 01:01:41 +00:00
David Chisnall e1d2584d44 Fix Objective-C++ exceptions (GNU runtime).
llvm-svn: 127980
2011-03-20 21:35:39 +00:00
Douglas Gregor 96a4bddefb Add an opt-in -Wheader-hygiene, which current diagnoses the use of
global using directives in C++ headers, from Elliot Glaysher!

llvm-svn: 127881
2011-03-18 16:10:52 +00:00
Abramo Bagnara 60804e1604 Fixed inconsistency when adding TemplateParameterListsInfo.
llvm-svn: 127876
2011-03-18 15:16:37 +00:00
Richard Smith 9647d3ca02 Fix PR9488: 'auto' type substitution can fail (for instance, if it creates a reference-to-void type). Don't crash if it does.
Also fix an issue where type source information for the resulting type was being lost.

llvm-svn: 127811
2011-03-17 16:11:59 +00:00
Sebastian Redl 31ad754c96 Instead of storing an ASTContext* in FunctionProtoTypes with computed noexcept specifiers, unique FunctionProtoTypes with a ContextualFoldingSet, as suggested by John McCall.
llvm-svn: 127568
2011-03-13 17:09:40 +00:00
Sebastian Redl 9cb4be2466 Revert "Disable delegating constructors for 2.9"
It is only meant for the release branch.

llvm-svn: 127544
2011-03-12 13:53:51 +00:00
Sebastian Redl a2cb77f54e Disable delegating constructors for 2.9
llvm-svn: 127543
2011-03-12 13:53:47 +00:00
Sebastian Redl c1f8e493da Revert "Disable inherited constructors for 2.9."
It is only meant for the release branch.

llvm-svn: 127542
2011-03-12 13:44:32 +00:00
Sebastian Redl 1dc2c1d27f Disable inherited constructors for 2.9.
llvm-svn: 127541
2011-03-12 13:44:23 +00:00
Sebastian Redl fa453cfdc3 Propagate the new exception information to FunctionProtoType.
Change the interface to expose the new information and deal with the enormous fallout.
Introduce the new ExceptionSpecificationType value EST_DynamicNone to more easily deal with empty throw specifications.
Update the tests for noexcept and fix the various bugs uncovered, such as lack of tentative parsing support.

llvm-svn: 127537
2011-03-12 11:50:43 +00:00
Abramo Bagnara f2a79d94e4 Forgotten part of previous commit.
llvm-svn: 127536
2011-03-12 11:17:06 +00:00
Peter Collingbourne e190dee7a5 Add support for the OpenCL vec_step operator, by generalising and
extending the existing support for sizeof and alignof.  Original
patch by Guy Benyei.

llvm-svn: 127475
2011-03-11 19:24:49 +00:00
Abramo Bagnara 0adf29a5bd Avoid do drop outer template parameter lists on the floor.
llvm-svn: 127404
2011-03-10 13:28:31 +00:00
Douglas Gregor f2f0806f71 Teach libclang's token-annotation logic about context-sensitive
keywords for Objective-C+ and C++0x. 

llvm-svn: 127253
2011-03-08 17:10:18 +00:00
Abramo Bagnara ea94788cf4 Fixed source range for StaticAssertDecl and LinkageSpecDecl. Fixed source range for declarations using postfix types.
llvm-svn: 127251
2011-03-08 16:41:52 +00:00
Abramo Bagnara b5545be14b Fixed NamespaceDecl source range.
llvm-svn: 127242
2011-03-08 12:38:20 +00:00
Abramo Bagnara dff1930bf7 Fixed source range for all DeclaratorDecl's.
llvm-svn: 127225
2011-03-08 08:55:46 +00:00
Sebastian Redl 7c6c9e971c Reinstate r127112, "Propagate new-style exception spec information to ExtProtoInfo.", this time with the missing header.
llvm-svn: 127118
2011-03-06 10:52:04 +00:00
NAKAMURA Takumi c92335a87c Revert r127112, "Propagate new-style exception spec information to ExtProtoInfo."
It seems missing "clang/Basic/ExceptionSpecificationType.h".

llvm-svn: 127115
2011-03-06 00:17:36 +00:00
Sebastian Redl 69d37125a9 Propagate new-style exception spec information to ExtProtoInfo.
llvm-svn: 127112
2011-03-05 22:42:26 +00:00
Benjamin Kramer 024e619f2a Move private structs into anonymous namespaces.
llvm-svn: 126997
2011-03-04 13:12:48 +00:00
Argyrios Kyrtzidis 7a1778eba1 -Woverloaded-virtual shouldn't warn for static functions. Fixes rdar://9083431 & http://llvm.org/PR9396.
llvm-svn: 126966
2011-03-03 22:58:57 +00:00
Abramo Bagnara 66a35d765f Removed left brace location from LinkageSpecDecl.
llvm-svn: 126945
2011-03-03 16:52:29 +00:00
Abramo Bagnara 4a8cda8556 Fixed end source location for LinkageSpecDecl.
llvm-svn: 126943
2011-03-03 14:52:38 +00:00
Douglas Gregor 844cb50266 Reinstate the introduction of source-location information for
nested-name-speciciers within elaborated type names, e.g.,
 
  enum clang::NestedNameSpecifier::SpecifierKind

Fixes in this iteration include:

  (1) Compute the type-source range properly for a dependent template
  specialization type that starts with "template template-id ::", as
  in a member access expression

    dep->template f<T>::f()

  This is a latent bug I triggered with this change (because now we're
  checking the computed source ranges for dependent template
  specialization types). But the real problem was...

  (2) Make sure to set the qualifier range on a dependent template
  specialization type appropriately. This will go away once we push
  nested-name-specifier locations into dependent template
  specialization types, but it was the source of the
  valgrind errors on the buildbots.
  

llvm-svn: 126765
2011-03-01 18:12:44 +00:00
Douglas Gregor b3a58b08e0 Revert r126748, my second attempt at nested-name-specifier source
location information for elaborated types. *sigh*

llvm-svn: 126753
2011-03-01 17:25:47 +00:00
Douglas Gregor bf5fe47b12 Reinstate r126737, extending the generation of type-source location
information for qualifier type names throughout the parser to address
several problems.

The commit message from r126737:

Push nested-name-specifier source location information into elaborated
name types, e.g., "enum clang::NestedNameSpecifier::SpecifierKind".

Aside from the normal changes, this also required some tweaks to the
parser. Essentially, when we're looking at a type name (via
getTypeName()) specifically for the purpose of creating an annotation
token, we pass down the flag that asks for full type-source location
information to be stored within the returned type. That way, we retain
source-location information involving nested-name-specifiers rather
than trying to reconstruct that information later, long after it's
been lost in the parser.

With this change, test/Index/recursive-cxx-member-calls.cpp is showing
much improved results again, since that code has lots of
nested-name-specifiers.

llvm-svn: 126748
2011-03-01 16:31:39 +00:00
Douglas Gregor 62a60c50f4 Revert r126737, the most recent nested-name-specifier location change, for buildbot breakage.
llvm-svn: 126746
2011-03-01 15:34:37 +00:00
Douglas Gregor 9720642c68 Push nested-name-specifier source location information into elaborated
name types, e.g., "enum clang::NestedNameSpecifier::SpecifierKind".

Aside from the normal changes, this also required some tweaks to the
parser. Essentially, when we're looking at a type name (via
getTypeName()) specifically for the purpose of creating an annotation
token, we pass down the flag that asks for full type-source location
information to be stored within the returned type. That way, we retain
source-location information involving nested-name-specifiers rather
than trying to reconstruct that information later, long after it's
been lost in the parser.

With this change, test/Index/recursive-cxx-member-calls.cpp is showing
much improved results again, since that code has lots of
nested-name-specifiers.

llvm-svn: 126737
2011-03-01 03:11:17 +00:00
Douglas Gregor 3d0da5f5dd Push nested-name-specifier source location information into
DependentNameTypeLoc. Teach the recursive AST visitor and libclang how to
walk DependentNameTypeLoc nodes.

Also, teach libclang about TypedefDecl source ranges, so that we get
those. The massive churn in test/Index/recursive-cxx-member-calls.cpp
is a good thing: we're annotating a lot more of this test correctly
now.

llvm-svn: 126729
2011-03-01 01:34:45 +00:00
Douglas Gregor 9cbc22ba2d Teach Sema::CheckTypenameType to use nested-name-specifiers with
source-location information. We don't actually preserve this
information in any of the resulting TypeLocs (yet), so it doesn't
matter.

llvm-svn: 126693
2011-02-28 22:42:13 +00:00
Douglas Gregor ea972d3faa Push nested-name-specifier location information into DeclRefExpr and
MemberExpr, the last of the expressions with qualifiers!

llvm-svn: 126688
2011-02-28 21:54:11 +00:00
Alexis Hunt c5575cced8 Implement delegating constructors partially.
This successfully performs constructor lookup and verifies that a
delegating initializer is the only initializer present.

This does not perform loop detection in the initialization, but it also
doesn't codegen delegating constructors at all, so this won't cause
runtime infinite loops yet.

llvm-svn: 126552
2011-02-26 19:13:13 +00:00
Douglas Gregor c05ba2ef12 Push nested-name-specifier source location information into namespace
aliases.

llvm-svn: 126496
2011-02-25 17:08:07 +00:00
Douglas Gregor 12441b3bc5 Push nested-name-specifier source location information into using directives.
llvm-svn: 126489
2011-02-25 16:33:46 +00:00
Douglas Gregor a9d87bc6ac Update UsingDecl, UnresolvedUsingTypenameDecl, and
UnresolvedUsingValueDecl to use NestedNameSpecifierLoc rather than the
extremely-lossy NestedNameSpecifier/SourceRange pair it used to use,
improving source-location information.

Various infrastructure updates to support NestedNameSpecifierLoc:
  - AST/PCH (de-)serialization
  - Recursive AST visitor
  - libclang traversal (including the first tests of this
    functionality)

llvm-svn: 126459
2011-02-25 00:36:19 +00:00
Douglas Gregor 869ad45f8f Retain complete source-location information for C++
nested-name-specifiers throughout the parser, and provide a new class
(NestedNameSpecifierLoc) that contains a nested-name-specifier along
with its type-source information.

Right now, this information is completely useless, because we don't
actually store the source-location information anywhere in the
AST. Call this Step 1/N.

llvm-svn: 126391
2011-02-24 17:54:50 +00:00
Douglas Gregor 2ab3fee3f3 Tweak the CXXScopeSpec API a bit, so that we require the
nested-name-specifier and source range to be set at the same time.

llvm-svn: 126347
2011-02-24 00:49:34 +00:00
Douglas Gregor 385d3fd97d When checking for abstract types, don't crash when we have a
FunctionProtoTypeLoc with NULL function parameter types, which can
occur in invalid code. Fixes PR9247 / <rdar://problem/9037911>.

llvm-svn: 126262
2011-02-22 23:21:06 +00:00
Richard Smith b2bc2e6752 Tweaks to C++0x deduced auto type support:
* Flag indicating 'we're parsing this auto typed variable's initializer' moved from VarDecl to Sema
 * Temporary template parameter list for auto deduction is now allocated on the stack.
 * Deduced 'auto' types are now uniqued.

llvm-svn: 126139
2011-02-21 20:05:19 +00:00
Richard Smith 30482bc786 Implement the C++0x deduced 'auto' feature.
This fixes PR 8738, 9060 and 9132.

llvm-svn: 126069
2011-02-20 03:19:35 +00:00
Douglas Gregor 0cf82f6ad0 Teach the virtual-functions-without-virtual-destructor warning to only
warn about polymorphic classes (which have virtual functions) rather
than dynamic classes (which are polymorphic or have virtual bases).

llvm-svn: 126036
2011-02-19 19:14:36 +00:00
Chandler Carruth 98e3c568bf Fix PR8767, improve diagnostic wording when allocating an object of an
abstract class type.

Patch by Stephen Hines, with a wording tweak from Doug applied by me.

llvm-svn: 125996
2011-02-18 23:59:51 +00:00
John McCall 1bf5846abf Save a copy expression for non-trivial copy constructions of catch variables.
llvm-svn: 125661
2011-02-16 08:02:54 +00:00
John McCall 25849cab8b Return a declaration to the parser when creating a field in C++ so that
the parser will complete the declarator with a valid decl and thus trigger
delayed diagnostics for it.  It certainly looks like we were intentionally
returning null here, but I couldn't find any good reason for it, and there
wasn't a comment, so farewell to all that.

llvm-svn: 125556
2011-02-15 07:12:36 +00:00
John McCall c146582e60 When parsing an out-of-line member function declaration, we must delay
access-control diagnostics which arise from the portion of the declarator
following the scope specifier, just in case access is granted by
friending the individual method.  This can also happen with in-line
member function declarations of class templates due to templated-scope
friend declarations.

We were really playing fast-and-loose before with this sort of thing,
and it turned out to work because *most* friend functions are in file
scope.  Making us delay regardless of context exposed several bugs with
how we were manipulating delay.  I ended up needing a concept of a
context that's independent of the declarations in which it appears,
and then I actually had to make some things save contexts correctly,
but delay should be much cleaner now.

I also encapsulated all the delayed-diagnostics machinery in a single
subobject of Sema;  this is a pattern we might want to consider rolling
out to other components of Sema.

llvm-svn: 125485
2011-02-14 07:13:47 +00:00
John McCall 8322c3a197 Give some convenient idiomatic accessors to Stmt::child_range and
Stmt::const_child_range, then make a bunch of places use them instead
of the individual iterator accessors.

llvm-svn: 125450
2011-02-13 04:07:26 +00:00
Argyrios Kyrtzidis 7dd856a76b For -Woverloaded-virtual take into account canonical methods. Fixes rdar://8979966 & http://llvm.org/PR9182.
llvm-svn: 125296
2011-02-10 18:13:41 +00:00
Sebastian Redl 0890502f44 Basic implementation of inherited constructors. Only generates declarations, and probably only works for very basic use cases.
llvm-svn: 124970
2011-02-05 19:23:19 +00:00
Anders Carlsson 3c23948481 Re-land r124768, with a fix for PR9130.
We now emit everything except unused implicit virtual member functions when building the vtable.

llvm-svn: 124935
2011-02-05 04:35:53 +00:00
Argyrios Kyrtzidis 7272d9cf36 Implement -Woverloaded-virtual.
The difference with gcc is that it warns if you overload virtual methods only if
the method doesn't also override any method. This is to cut down on the number of warnings
and make it more useful like reported here: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20423.
If we want to warn that not all overloads are overriden we can have an additional
warning like -Wpartial-override.

-Woverloaded-virtual, unlike gcc, is added to -Wmost. Addresses rdar://8757630.

llvm-svn: 124805
2011-02-03 18:01:15 +00:00
Rafael Espindola af5b92e8f7 Revert 124768.
This reopens PR99114, but that one at least can be avoided with an #include.
PR9130 cannot.

llvm-svn: 124780
2011-02-03 06:30:58 +00:00
Anders Carlsson bac84bef65 Don't try to mark virtual members referenced for classes where the key function
is not defined in the current translation unit. Doing so lead to compile errors
such as PR9114.

Instead, when CodeGen is building the vtable, don't try to emit a definition
for functions that aren't marked used in the current translation unit.
Fixes PR9114.

llvm-svn: 124768
2011-02-03 02:08:44 +00:00
Argyrios Kyrtzidis 83b797f490 Don't warn for -Wnon-virtual-dtor for dependent classes.
llvm-svn: 124735
2011-02-02 18:47:41 +00:00
Argyrios Kyrtzidis 33799caf6d Only warn for -Wnon-virtual-dtor for public destructors. Thanks to Benjamin Kramer for the hint!
llvm-svn: 124585
2011-01-31 17:10:25 +00:00
Argyrios Kyrtzidis 7f3986dc64 Warn if the class has virtual methods but non-virtual destructor. Addresses rdar://8756445.
llvm-svn: 124582
2011-01-31 07:05:00 +00:00
Anders Carlsson a03f3a85cb When building with optimizations, emit vtables where the key is not in the
current translation unit as available_externally. 

This helps devirtualize the second example in PR3100, comment 18:

struct S { S() {}; virtual void xyzzy(); };
inline void foo(S *s) { s->xyzzy(); }
void bar() { S s; foo(&s); }

This involved four major changes:

1. In DefineUsedVTables, always mark virtual member functions as referenced for
   non-template classes and class template specializations.
2. In CodeGenVTables::ShouldEmitVTableInThisTU return true if optimizations are
   enabled, even if the key function is not implemented in this translation 
   unit. We don't ever do this for code compiled with -fapple-kext, because we
   don't ever want to devirtualize virtual member function calls in that case.
3. Give the correct linkage for vtables where the key function is not defined.
4. Update the linkage for RTTI structures when necessary.

llvm-svn: 124565
2011-01-30 20:45:54 +00:00
Douglas Gregor 3fb22baddb Allow elision of invocations of move constructors from temporary objects.
llvm-svn: 124455
2011-01-27 23:24:55 +00:00
Douglas Gregor db9d664244 Rvalue references for *this:
- Add ref-qualifiers to the type system; they are part of the
  canonical type. Print & profile ref-qualifiers
  - Translate the ref-qualifier from the Declarator chunk for
    functions to the function type. 
  - Diagnose mis-uses of ref-qualifiers w.r.t. static member
  functions, free functions, constructors, destructors, etc.
  - Add serialization and deserialization of ref-qualifiers.

llvm-svn: 124281
2011-01-26 05:01:58 +00:00
Anders Carlsson e771e76326 Don't insert class templates into the DynamicClasses vector.
llvm-svn: 124201
2011-01-25 18:08:22 +00:00
Anders Carlsson 1eb95961d3 Use attributes for all the override control specifiers.
llvm-svn: 124122
2011-01-24 16:26:15 +00:00
Anders Carlsson 19588aa40b Get rid of the [[final]] C++0x attribute.
llvm-svn: 124083
2011-01-23 21:07:30 +00:00
Anders Carlsson 7d59a68330 Implement [class.derived]p8.
llvm-svn: 124047
2011-01-22 22:23:37 +00:00
Anders Carlsson fc1eef4898 Mark classes as final or explicit. Diagnose when a class marked 'final' is used as a base.
llvm-svn: 124039
2011-01-22 17:51:53 +00:00
Anders Carlsson 3f610c75de Diagnose when a virtual member function marked final is overridden.
llvm-svn: 123916
2011-01-20 16:25:36 +00:00
Anders Carlsson fa8e5d3d67 When checking for functions marked override, ignore dependent contexts.
llvm-svn: 123894
2011-01-20 06:33:26 +00:00
Anders Carlsson c87f861d0a Make CheckOverrideControl a member of Sema.
llvm-svn: 123893
2011-01-20 06:29:02 +00:00
Anders Carlsson fd83553733 Diagnose virtual member functions marked override but not overriding any virtual member functions.
llvm-svn: 123888
2011-01-20 05:57:14 +00:00
Anders Carlsson 13a69102d7 Only allow virtual member functions to be marked 'override' and 'final'.
llvm-svn: 123882
2011-01-20 04:34:22 +00:00
Anders Carlsson db36b8055e Pass the VirtSpecifiers along to Sema::ActOnCXXMemberDeclarator.
llvm-svn: 123878
2011-01-20 03:57:25 +00:00
Douglas Gregor 0231d8dac7 Implement support for non-type template parameter packs whose type is
a pack expansion, e.g., the parameter pack Values in:

  template<typename ...Types>
  struct Outer {
    template<Types ...Values>
    struct Inner;
  };

This new implementation approach introduces the notion of an
"expanded" non-type template parameter pack, for which we have already
expanded the types of the parameter pack (to, say, "int*, float*",
for Outer<int*, float*>) but have not yet expanded the values. Aside
from creating these expanded non-type template parameter packs, this
patch updates template argument checking and non-type template
parameter pack instantiation to make use of the appropriate types in
the parameter pack.

llvm-svn: 123845
2011-01-19 20:10:05 +00:00
John McCall 8b7fd8f156 When building the copy expression for a __block variable, make sure
there's a respectable point of instantiation.  Also, make sure we do
this operation even when instantiating a dependently-typed variable.

llvm-svn: 123818
2011-01-19 11:48:09 +00:00
John McCall 424cec97bd Change QualType::getTypePtr() to return a const pointer, then change a
thousand other things which were (generally inadvertantly) relying on that.

llvm-svn: 123814
2011-01-19 06:33:43 +00:00
Jeffrey Yasskin 8dfa5f1776 Fix warnings found by gcc-4.6, from -Wunused-but-set-variable and
-Wint-to-pointer-cast.

llvm-svn: 123719
2011-01-18 02:00:16 +00:00
Alexis Hunt 1d7926502f Renamed CXXBaseOrMemberInitializer to CXXCtorInitializer. This is both shorter,
more accurate, and makes it make sense for it to hold a delegating constructor
call.

llvm-svn: 123084
2011-01-08 20:30:50 +00:00
Alexis Hunt 4049b8d4cd Check for delegating constructors and (currently) return an error about them.
llvm-svn: 123076
2011-01-08 19:20:43 +00:00
Douglas Gregor 44e7df67d9 Implement pack expansion of base initializers, so that we can
initialize those lovely mixins that come from pack expansions of base
specifiers.

llvm-svn: 122793
2011-01-04 00:32:56 +00:00
Douglas Gregor 752a595655 Implement pack expansions whose pattern is a base-specifier.
llvm-svn: 122782
2011-01-03 22:36:02 +00:00
Douglas Gregor 7c84229db6 When checking a using declaration, make sure that the context we're
looking in is complete. Fixes PR8756.

llvm-svn: 122323
2010-12-21 07:41:49 +00:00
Douglas Gregor 72772f65ec Add tests checking for unexpanded parameter packs in declarations that
occur within statements. Teach Sema::ActOnExceptionDeclarator() to
check for unexpanded parameter packs in the exception type.

llvm-svn: 121984
2010-12-16 17:48:04 +00:00
Douglas Gregor 6ff1fbf65f Check for unexpanded parameter packs in default arguments.
llvm-svn: 121962
2010-12-16 08:48:57 +00:00
Douglas Gregor 71f39c96fb Check for unexpanded parameter packs within variable initializers.
llvm-svn: 121938
2010-12-16 01:31:22 +00:00
Douglas Gregor 6c110f385b Check for unexpanded parameter packs in friend declarations.
llvm-svn: 121934
2010-12-16 01:14:37 +00:00
Douglas Gregor c435653998 Check for unexpanded parameter packs in using declarations. As a
drive-by, make sure to check for unexpanded parameter packs within the
name of a declaration.

llvm-svn: 121930
2010-12-16 00:46:58 +00:00
Douglas Gregor ef68feee1d Check for unexpanded parameter packs in static assertion expressions.
llvm-svn: 121922
2010-12-15 23:55:21 +00:00
Argyrios Kyrtzidis 1cb0de1d4c Fix diagnostic pragmas.
Diagnostic pragmas are broken because we don't keep track of the diagnostic state changes and we only check the current/latest state.
Problems manifest if a diagnostic is emitted for a source line that has different diagnostic state than the current state; this can affect
a lot of places, like C++ inline methods, template instantiations, the lexer, etc.

Fix the issue by having the Diagnostic object keep track of the source location of the pragmas so that it is able to know what is the diagnostic state at any given source location.

Fixes rdar://8365684.

llvm-svn: 121873
2010-12-15 18:44:22 +00:00
John McCall db40c7f573 Restore r121752 without modification.
llvm-svn: 121763
2010-12-14 08:05:40 +00:00
John McCall 5546da68bb Pull out r121752 in case it's causing the selfhost breakage.
llvm-svn: 121759
2010-12-14 07:30:51 +00:00
John McCall aa6d98c160 Factor out most of the extra state in a FunctionProtoType into a separate
class to be passed around.  The line between argument and return types and
everything else is kindof vague, but I think it's justifiable.

llvm-svn: 121752
2010-12-14 06:51:39 +00:00
Douglas Gregor 506bd56484 Variadic templates: extend Type, NestedNameSpecifier, TemplateName,
and TemplateArgument with an operation that determines whether there
are any unexpanded parameter packs within that construct. Use this
information to diagnose the appearance of the names of parameter packs
that have not been expanded (C++ [temp.variadic]p5). Since this
property is checked often (every declaration, ever expression
statement, etc.), we extend Type and Expr with a bit storing the
result of this computation, rather than walking the AST each time to
determine whether any unexpanded parameter packs occur.

This commit is deficient in several ways, which will be remedied with
future commits:
  - Expr has a bit to store the presence of an unexpanded parameter
  pack, but it is never set.
  - The error messages don't point out where the unexpanded parameter
  packs were named in the type/expression, but they should. 
  - We don't check for unexpanded parameter packs in all of the places
  where we should.
  - Testing is sparse, pending the resolution of the above three
  issues.

llvm-svn: 121724
2010-12-13 22:49:22 +00:00
Chandler Carruth 88bfa5ea51 Move the functionality to mark all vtables of key functions as used within
a translation unit to the ActOnEndOfTranslationUnit function instead of doing
it at the start of DefineUsedVTables. The latter is now called *recursively*
during template instantiation, which causes an absolutely insane number of
walks of every record decl in the translation unit.

After this patch, an extremely template instantiation heavy test case's compile
time drops by 10x, and we see between 15% and 20% improvement in average
compile times across a project. This is just recovering a regression, it
doesn't make anything faster than it was several weeks ago.

llvm-svn: 121644
2010-12-12 21:36:11 +00:00
Abramo Bagnara 924a8f3573 Added ParenType type node.
llvm-svn: 121488
2010-12-10 16:29:40 +00:00
John McCall 2faf32c4fd Treat visibility on an enclosing namespace as a non-explicit source of
visibility.  Fixes PR8713.

I've disabled a test which was testing that you can #pragma pop visibility
to get out of a namespace's visibility attribute.  We should probably just
diagnose that as an error unless it's instrumental to someone's system
headers.

llvm-svn: 121459
2010-12-10 02:59:44 +00:00
Jay Foad 6d4db0c885 PR5207: Change APInt methods trunc(), sext(), zext(), sextOrTrunc() and
zextOrTrunc(), and APSInt methods extend(), extOrTrunc() and new method
trunc(), to be const and to return a new value instead of modifying the
object in place.

llvm-svn: 121121
2010-12-07 08:25:34 +00:00
Douglas Gregor a40433a33a Use Sema::MaybeCreateExprWithCleanups() only after we've checked for a NULL/invalid expression
llvm-svn: 121081
2010-12-07 00:41:46 +00:00
Chandler Carruth d44c3105fb Un-templatetize this method. It's definition is out of line in the .cpp file,
so that's not a valid thing to do at all. Instead, switch to a ValueDecl
argument, the template isn't really necessary here.

When handling the types explicitly in the code, it becomes awkward to cerate
the CXXBaseOrMemberInitializer object in so many places. Re-flow the code to
calculate the Init expression first, and then create the initializer. If this
is too gross, we can factor the init expression logic into helper functions,
but it's not past my threshold yet.

llvm-svn: 120997
2010-12-06 09:23:57 +00:00
John McCall 5d41378146 Rename CXXExprWithTemporaries -> ExprWithCleanups; there's no theoretical
reason this is limited to C++, and it's certainly not limited to temporaries.

llvm-svn: 120996
2010-12-06 08:20:24 +00:00
Francois Pichet d583da04d0 More anonymous struct/union redesign. This one deals with anonymous field used in a constructor initializer list:
struct X {
  X() : au_i1(123) {}
  union {
    int au_i1;
    float au_f1;
  };
};

clang will now deal with au_i1 explicitly as an IndirectFieldDecl.

llvm-svn: 120900
2010-12-04 09:14:42 +00:00
John McCall 032092ffc2 Revert r120063, it was wrong.
llvm-svn: 120296
2010-11-29 18:01:58 +00:00
Nico Weber 20c9f1db48 Minor whitespace and comment fixes. No functionality change.
llvm-svn: 120266
2010-11-28 22:53:37 +00:00
John McCall 8a1013f8c3 Redeclarations of using declarations are not okay in function scopes.
Not sure what I was thinking before.

Fixes PR8668.

llvm-svn: 120063
2010-11-23 22:03:51 +00:00
Francois Pichet 783dd6ece4 Major anonymous union/struct redesign.
A new AST node is introduced:
   def IndirectField : DDecl<Value>;
IndirectFields are injected into the anonymous's parent scope and chain back to
the original field. Name lookup for anonymous entities now result in an
IndirectFieldDecl instead of a FieldDecl.
There is no functionality change, the code generated should be the same.

llvm-svn: 119919
2010-11-21 06:08:52 +00:00
Nick Lewycky 9331ed89f8 A bundle of whitespace changes, separated out from the functional changes.
llvm-svn: 119886
2010-11-20 01:29:55 +00:00
Argyrios Kyrtzidis 1865342442 Refactoring.
Move ErrorTrap from clang/Sema to clang/Basic as DiagnosticErrorTrap and use it in Scope.

llvm-svn: 119763
2010-11-19 00:19:12 +00:00
John McCall 4bc41aee2b Add an assertion, fix a whole bunch of bugs, comment the assertion
out because there are still bugs left.

llvm-svn: 119722
2010-11-18 19:01:18 +00:00
John McCall 7decc9e4ea Calculate the value kind of an expression when it's created and
store it on the expression node.  Also store an "object kind",
which distinguishes ordinary "addressed" l-values (like
variable references and pointer dereferences) and bitfield,
@property, and vector-component l-values.

Currently we're not using these for much, but I aim to switch
pretty much everything calculating l-valueness over to them.
For now they shouldn't necessarily be trusted.

llvm-svn: 119685
2010-11-18 06:31:45 +00:00
Ted Kremenek 5eec2b0bd3 Region-allocate all AttributeList objects from a factory object instead of manually managing them
using new/delete and OwningPtrs.  After memory profiling Clang, I witnessed periodic leaks of these
objects; digging deeper into the code, it was clear that our management of these objects was a mess.  The ownership rules were murky at best, and not always followed.  Worse, there are plenty of error paths where we could screw up.

This patch introduces AttributeList::Factory, which is a factory class that creates AttributeList
objects and then blows them away all at once.  While conceptually simple, most of the changes in
this patch just have to do with migrating over to the new interface.  Most of the changes have resulted in some nice simplifications.

This new strategy currently holds on to all AttributeList objects during the lifetime of the Parser
object.  This is easily tunable.  If we desire to have more bound the lifetime of AttributeList
objects more precisely, we can have the AttributeList::Factory object (in Parser) push/pop its
underlying allocator as we enter/leave key methods in the Parser.  This means that we get
simple memory management while still having the ability to finely control memory use if necessary.

Note that because AttributeList objects are now BumpPtrAllocated, we may reduce malloc() traffic
in many large files with attributes.

This fixes the leak reported in: <rdar://problem/8650003>

llvm-svn: 118675
2010-11-10 05:59:39 +00:00
John McCall 9b72f89f0f Diagnose attempst to template using declarations and using directives.
Recover from the latter and fail early for the former.  Fixes PR8022.

llvm-svn: 118669
2010-11-10 02:40:36 +00:00
Chris Lattner 8ea6442f92 tidy up
llvm-svn: 118626
2010-11-09 20:15:55 +00:00
Douglas Gregor 23ab745e79 Fix source locations in unnamed bitfield diagnostic, from Jakub
Wieczorek! Fixes PR8025.

llvm-svn: 118481
2010-11-09 03:31:16 +00:00
Douglas Gregor 266bb5fd5b Check for an invalid field earlier in a constructor's initialization
of that field. Otherwise, we can end up building and later trying to
instantiate a dependent member initializer that will fail at
instantiation time. 

Unfortunately, I've only managed to trigger this bug with very large
sources, so there's no test case :(

llvm-svn: 118306
2010-11-05 22:21:31 +00:00
John McCall c3007a2145 No really, we don't have a retain/release system for statements/expressions
anymore.

llvm-svn: 117357
2010-10-26 07:05:15 +00:00
Chandler Carruth 0171815ae1 Improve the tracking of source locations for parentheses in constructor calls.
This adds them where missing, and traces them through PCH. We fix at least one
bug in the extents found by the Index library, and make a lot of refactoring
tools which care about the exact formulation of a constructor call easier to
write. Also some minor cleanups to more consistently follow the friend pattern
instead of the setter pattern when rebuilding a serialized AST.

Patch originally by Samuel Benzaquen.

llvm-svn: 117254
2010-10-25 08:47:36 +00:00
Douglas Gregor 412c362d9e When performing name lookup for a namespace definition, only look into
the current context's redeclaration context, ignoring using
directives. Fixes PR8430.

llvm-svn: 117097
2010-10-22 15:24:46 +00:00
Craig Silverstein af8808dd28 Pass TInfo to CXXDestructorDecl::Create(), just like we do for other
function decls.

Reviewed by rjmccall and nlewycky.

llvm-svn: 116979
2010-10-21 00:44:50 +00:00
John McCall ace48cd872 Redirect templated friend class decls to a new Sema callback and
construct an unsupported friend when there's a friend with a templated
scope specifier.  Fixes a consistency crash, rdar://problem/8540527

llvm-svn: 116786
2010-10-19 01:40:49 +00:00
John McCall c9739e30c6 Reformatting.
llvm-svn: 116662
2010-10-16 07:23:36 +00:00
John McCall 2c2eb12d9c White-listing templated-scope friend decls is a good idea, but doing it
by marking the decl invalid isn't.  Make some steps towards supporting these
and then hastily shut them down at the last second by marking them as
unsupported.

llvm-svn: 116661
2010-10-16 06:59:13 +00:00
Douglas Gregor 36c22a2335 Diagnose C++ [class.mem]p13-14, where a class member has the same name
as the class itself. Fixes PR7082.

llvm-svn: 116573
2010-10-15 13:21:21 +00:00
John McCall 1c9c3fd50a Death to blocks, or at least the word "block" in one particular obnoxiously
ambiguous context.

llvm-svn: 116567
2010-10-15 04:57:14 +00:00
John McCall f477659040 template-ids are looked up differently in friend declarations.
llvm-svn: 116529
2010-10-14 22:22:28 +00:00
Douglas Gregor a007d36c1b Generalize the checking for qualification of (non-friend) class
members. Provide a hard error when the qualification doesn't match the
current class type, or a warning + Fix-it if it does match the current
class type. Fixes PR8159.

llvm-svn: 116445
2010-10-13 22:19:53 +00:00
John McCall ccbc032146 Preserve the original scope when picking the right scope for a friend
declaration, because we'll need it later.  Hopefully fixed self-host.

llvm-svn: 116399
2010-10-13 06:22:15 +00:00
John McCall f7cfb2212c Support friend function declarations in local classes correctly.
Fixes a crash and diagnoses the error condition of an unqualified
friend which doesn't resolve to something.  I'm still not certain how
this is useful.

llvm-svn: 116393
2010-10-13 05:45:15 +00:00
John McCall de3fd2264c Handle dependent friends more explicitly and deal with the possibility
of templated-scope friends by marking them invalid and white-listing all
accesses until such time as we implement them.  Fixes a crash, this time
without a broken test case.

llvm-svn: 116364
2010-10-12 23:13:28 +00:00
Douglas Gregor 758cb67fcf If we end up instantiating a function parameter whose default argument
has not yet been parsed, note that the default argument hasn't been
parsed and keep track of all of the instantiations of that function
parameter. When its default argument does get parsed, imbue the
instantiations with that default argument. Fixes PR8245.

llvm-svn: 116324
2010-10-12 18:23:32 +00:00
John McCall acf0ee57b6 Track the location of the context requiring an implicit conversion and use it
to white-list conversions required by system headers.  rdar://problem/8232669

llvm-svn: 116029
2010-10-08 02:01:28 +00:00
Nick Lewycky 3005242401 Silence unused variable warning in Release builds.
llvm-svn: 115806
2010-10-06 18:37:39 +00:00
Anders Carlsson 0f7e94fd7b When checking for uninitialized fields in member initializers, special case static variables and enums. Fixes PR8075.
llvm-svn: 115732
2010-10-06 02:43:25 +00:00
Douglas Gregor 457104e98b Move the management of the set of conversion functions in a C++ class
into CXXRecordDecl. The only part that we do not handle this way are
using declarations, since that would require extra name lookup that we
don't currently want to pay for. This fixes <rdar://problem/8459981>,
so that LLDB can build a CXXRecordDecl and magically get all of the
right bits set.

llvm-svn: 115026
2010-09-29 04:25:11 +00:00
Douglas Gregor 8fb9512966 Move the maintenance of CXXRecordDecl::DefinitionData's Abstract bit
completely into CXXRecordDecl, by adding a new completeDefinition()
function. This required a little reshuffling of the final-overrider
checking code, since the "abstract" calculation in the presence of
abstract base classes needs to occur in
CXXRecordDecl::completeDefinition() but we don't want to compute final
overriders more than one in the common case.

llvm-svn: 115007
2010-09-29 00:15:42 +00:00
Douglas Gregor 7d9120c3ed Teach FunctionDecl::setPure() to (indirectly) mark the Abstract bit in
CXXRecordDecl::DefinitionData, rather than having Sema mark the bit.

llvm-svn: 114993
2010-09-28 21:55:22 +00:00
Douglas Gregor 11c024bbeb Reinstate r114925 and r114929, both steps toward
<rdar://problem/8459981>.

llvm-svn: 114984
2010-09-28 20:50:54 +00:00
Douglas Gregor 9d5938ae8a Centralize the management of CXXRecordDecl::DefinitionData's Empty bit
in CXXRecordDecl itself. Yes, this is also part of <rdar://problem/8459981>.

This reinstates r114924, with one crucial bug fix: we were ignoring
the implicit fields created by anonymous structs/unions when updating
the bits in CXXRecordDecl, which means that a class/struct containing
only an anonymous class/struct would be considered "empty". Hilarity
follows. 

llvm-svn: 114980
2010-09-28 20:38:10 +00:00
Douglas Gregor a832d3e2cc Reinstate r114921, which I've exonerated via a self-host build.
Centralize the management of CXXRecordDecl::DefinitionData's Aggregate
and PlainOldData bits in CXXRecordDecl itself. Another milepost on the
road toward <rdar://problem/8459981>.

llvm-svn: 114977
2010-09-28 19:45:33 +00:00
Bill Wendling 6d8c442e08 Temporarily revert 114929 114925 114924 114921. It looked like they (or at least
one of them) was causing a series of failures:

http://google1.osuosl.org:8011/builders/clang-x86_64-darwin10-selfhost/builds/4518

svn merge -c -114929 https://llvm.org/svn/llvm-project/cfe/trunk
--- Reverse-merging r114929 into '.':
U    include/clang/Sema/Sema.h
U    include/clang/AST/DeclCXX.h
U    lib/Sema/SemaDeclCXX.cpp
U    lib/Sema/SemaTemplateInstantiateDecl.cpp
U    lib/Sema/SemaDecl.cpp
U    lib/Sema/SemaTemplateInstantiate.cpp
U    lib/AST/DeclCXX.cpp
svn merge -c -114925 https://llvm.org/svn/llvm-project/cfe/trunk
--- Reverse-merging r114925 into '.':
G    include/clang/AST/DeclCXX.h
G    lib/Sema/SemaDeclCXX.cpp
G    lib/AST/DeclCXX.cpp
svn merge -c -114924 https://llvm.org/svn/llvm-project/cfe/trunk
--- Reverse-merging r114924 into '.':
G    include/clang/AST/DeclCXX.h
G    lib/Sema/SemaDeclCXX.cpp
G    lib/Sema/SemaDecl.cpp
G    lib/AST/DeclCXX.cpp
U    lib/AST/ASTContext.cpp
svn merge -c -114921 https://llvm.org/svn/llvm-project/cfe/trunk
--- Reverse-merging r114921 into '.':
G    include/clang/AST/DeclCXX.h
G    lib/Sema/SemaDeclCXX.cpp
G    lib/Sema/SemaDecl.cpp
G    lib/AST/DeclCXX.cpp

llvm-svn: 114933
2010-09-28 01:09:49 +00:00
Douglas Gregor 1f93ffb3e6 Centralize the management of CXXRecordDecl::DefinitionData's
HasTrivialConstructor, HasTrivialCopyConstructor,
HasTrivialCopyAssignment, and HasTrivialDestructor bits in
CXXRecordDecl's methods. This completes all but the Abstract bit and
the set of conversion functions, both of which will require a bit of
extra work. The majority of <rdar://problem/8459981> is now
implemented (but not all of it).

llvm-svn: 114929
2010-09-28 00:00:00 +00:00
Douglas Gregor d22553cf21 Centralize the management of CXXRecordDecl::DefinitionData's
Polymorphic bit in CXXRecordDecl itself. Yes, this is also part of
<rdar://problem/8459981>.

llvm-svn: 114925
2010-09-27 23:39:06 +00:00
Douglas Gregor 01daafc58a Centralize the management of CXXRecordDecl::DefinitionData's Empty bit
in CXXRecordDecl itself. Yes, this is also part of <rdar://problem/8459981>.

llvm-svn: 114924
2010-09-27 23:31:14 +00:00
Douglas Gregor 1be93f5143 Centralize the management of CXXRecordDecl::DefinitionData's Aggregate
and PlainOldData bits in CXXRecordDecl itself. Another milepost on the
road toward <rdar://problem/8459981>.

llvm-svn: 114921
2010-09-27 23:16:44 +00:00
Douglas Gregor 8f9ebe54b3 Centralize the handling of CXXRecordDecl::DefinitionData's
DeclaredDestructor and UserDeclaredDestructor bits in CXXRecordDecl
itself. Another step on the road to <rdar://problem/8459981>.

llvm-svn: 114918
2010-09-27 22:48:58 +00:00
Douglas Gregor ec3bec0c7a Kill FunctionDecl's IsCopyAssignment bit; it duplicated what could
already be determined by isCopyAssignmentOperator(), and was set too
late in the process for all clients to see the appropriate
value. Cleanup only; no functionality change.

llvm-svn: 114916
2010-09-27 22:37:28 +00:00
Douglas Gregor a1ce1f80cf Centralize the handling of
CXXRecordDecl::DefinitionData::DeclaredCopyAssignment, for
copy-assignment operators. Another step toward <rdar://problem/8459981>.

llvm-svn: 114899
2010-09-27 22:06:20 +00:00
Douglas Gregor d30e79f839 Clean up the handling of the DeclaredDefaultConstructor and
DeclaredCopyConstructor bits in CXXRecordDecl's DefinitionData
structure. Rather than having Sema call addedConstructor or set the
bits directly at semi-random places, move all of the logic for
managing these bits into CXXRecordDecl itself and tie the
addedConstructor call into DeclContext::addDecl().

This makes it easier for AST-building clients to get the right bits
set in DefinitionData, and is one small part of <rdar://problem/8459981>.

llvm-svn: 114889
2010-09-27 21:17:54 +00:00
Fariborz Jahanian 8fb87aec78 Patch implements passing arrays to functions expecting
vla. Implements pr7827.

llvm-svn: 114737
2010-09-24 17:30:16 +00:00