Commit Graph

1509 Commits

Author SHA1 Message Date
Richard Smith d22652122d Implement C++ DR1391 (wg21.link/cwg1391)
Check for implicit conversion sequences for non-dependent function
template parameters between deduction and substitution. The idea is to accept
as many cases as possible, on the basis that substitution failure outside the
immediate context is much more common during substitution than during implicit
conversion sequence formation.

This re-commits r290808, reverted in r290811, with a fix for handling of
explicitly-specified template argument packs.

llvm-svn: 291410
2017-01-09 00:43:47 +00:00
Renato Golin dad96d6751 Revert "DR1391: Check for implicit conversion sequences for non-dependent function template parameters between deduction and substitution. The idea is to accept as many cases as possible, on the basis that substitution failure outside the immediate context is much more common during substitution than during implicit conversion sequence formation."
This reverts commit r290808, as it broken all ARM and AArch64 test-suite
test: MultiSource/UnitTests/C++11/frame_layout

Also, please, next time, try to write a commit message in according to
our guidelines:

http://llvm.org/docs/DeveloperPolicy.html#commit-messages

llvm-svn: 290811
2017-01-02 11:15:42 +00:00
Richard Smith efcfe86072 DR1391: Check for implicit conversion sequences for non-dependent function
template parameters between deduction and substitution. The idea is to accept
as many cases as possible, on the basis that substitution failure outside
the immediate context is much more common during substitution than during
implicit conversion sequence formation.

This does not implement the partial ordering portion of DR1391, which so
far appears to be misguided.

llvm-svn: 290808
2017-01-02 02:42:17 +00:00
Richard Smith 26b86ea8b1 [c++17] Implement P0522R0 as written. This allows a template template argument
to be specified for a template template parameter whenever the parameter is at
least as specialized as the argument (when there's an obvious and correct
mapping from uses of the parameter to uses of the argument). For example, a
template with more parameters can be passed to a template template parameter
with fewer, if those trailing parameters have default arguments.

This is disabled by default, despite being a DR resolution, as it's fairly
broken in its current state: there are no partial ordering rules to cope with
template template parameters that have different parameter lists, meaning that
code that attempts to decompose template-ids based on arity can hit unavoidable
ambiguity issues.

The diagnostics produced on a non-matching argument are also pretty bad right
now, but I aim to improve them in a subsequent commit.

llvm-svn: 290792
2016-12-31 21:41:23 +00:00
Richard Smith 57aae07b4a DR1315: a non-type template argument in a partial specialization is permitted
to make reference to template parameters. This is only a partial
implementation; we retain the restriction that the argument must not be
type-dependent, since it's unclear how that would work given the existence of
other language rules requiring an exact type match in this context, even for
type-dependent cases (a question has been raised on the core reflector).

llvm-svn: 290647
2016-12-28 02:37:25 +00:00
Richard Smith 0e617ecdd1 DR1495: A partial specialization is ill-formed if it is not (strictly) more
specialized than the primary template. (Put another way, if we imagine there
were a partial specialization matching the primary template, we should never
select it if some other partial specialization also matches.)

llvm-svn: 290593
2016-12-27 07:56:27 +00:00
Richard Smith cb0ccb08ee [c++1z] cxx_status: mark p0195r2 as done.
llvm-svn: 290081
2016-12-19 04:16:03 +00:00
Richard Smith 378b8c8f01 [c++1z] P0217R3: Allow by-value structured binding of arrays.
llvm-svn: 289630
2016-12-14 03:22:16 +00:00
Richard Smith f0e87cf2c3 Add tests for a couple more DRs.
llvm-svn: 289258
2016-12-09 19:35:45 +00:00
Richard Smith b11b087a85 cxx_dr_status: update to latest issue list and add a couple more tests.
llvm-svn: 289255
2016-12-09 19:11:50 +00:00
Richard Smith 82da19ddb3 [c++1z] P0003R5: Removing dynamic exception specifications.
We continue to support dynamic exception specifications in C++1z as an
extension, but produce an error-by-default warning when we encounter one. This
allows users to opt back into the feature with a warning flag, and implicitly
opts system headers back into the feature should they happen to use it.

There is one semantic change implied by P0003R5 but not implemented here:
violating a throw() exception specification should now call std::terminate
directly instead of calling std::unexpected(), but since P0003R5 also removes
std::unexpected() and std::set_unexpected, and the default unexpected handler
calls std::terminate(), a conforming C++1z program cannot tell that we are
still calling it. The upside of this strategy is perfect backwards
compatibility; the downside is that we don't get the more efficient 'noexcept'
codegen for 'throw()'.

llvm-svn: 289019
2016-12-08 02:49:07 +00:00
Richard Smith 122f88d481 [c++17] P0135R1: Guaranteed copy elision.
When an object of class type is initialized from a prvalue of the same type
(ignoring cv qualifications), use the prvalue to initialize the object directly
instead of inserting a redundant elidable call to a copy constructor.

llvm-svn: 288866
2016-12-06 23:52:28 +00:00
Richard Smith b3189a1802 DR1213: element access on an array xvalue or prvalue produces an xvalue. In the
latter case, a temporary array object is materialized, and can be
lifetime-extended by binding a reference to the member access. Likewise, in an
array-to-pointer decay, an rvalue array is materialized before being converted
into a pointer.

This caused IR generation to stop treating file-scope array compound literals
as having static storage duration in some cases in C++; that has been rectified
by modeling such a compound literal as an lvalue. This also improves clang's
compatibility with GCC for those cases.

llvm-svn: 288654
2016-12-05 07:49:14 +00:00
Richard Smith 4baaa5ab52 DR616, and part of P0135R1: member access (or pointer-to-member access) on a
temporary produces an xvalue, not a prvalue. Support this by materializing the
temporary prior to performing the member access.

llvm-svn: 288563
2016-12-03 01:14:32 +00:00
Richard Smith a7d9378761 P0012R1: add Itanium ABI support for throwing non-noexcept function pointers and catching as noexcept.
llvm-svn: 288305
2016-12-01 03:32:42 +00:00
Richard Smith b17d6fa5b3 Revert r285664, cxx-abi-dev chose to go in a different direction for the ABI here.
llvm-svn: 288304
2016-12-01 03:04:07 +00:00
Devin Coughlin 0f77429df3 [www] Fix spelling error in checker release notes.
llvm-svn: 287105
2016-11-16 14:23:41 +00:00
Devin Coughlin e88a786947 [www] Update analyzer website for release of checker-279
llvm-svn: 287063
2016-11-16 00:47:56 +00:00
Richard Smith ca18579766 PR23281: Fix implementation of DR1891 to implement the intent: that is, a
lambda-expression does not have a move-assignment operator.

llvm-svn: 287057
2016-11-16 00:03:24 +00:00
Mehdi Amini 0f5b90c0cc Add instructions in clang get_started page about working with a monorepo
llvm-svn: 286696
2016-11-12 01:18:17 +00:00
Richard Smith 7e4e1aea15 [c++1z] std::byte didn't make it
llvm-svn: 286685
2016-11-12 00:15:24 +00:00
Richard Smith da6b5721b5 [c++1z] Two more features have been accepted.
llvm-svn: 286681
2016-11-11 23:51:47 +00:00
Richard Smith e0c7500735 [c++1z] p0522 is approved.
llvm-svn: 286679
2016-11-11 23:46:25 +00:00
Richard Smith 5a20d7eebe [cxx_status] Prepare features list for WG21 motions.
llvm-svn: 286660
2016-11-11 22:48:43 +00:00
Alex Lorenz da43a5e768 [www] Update the link to the 'include what you use' project
llvm-svn: 286121
2016-11-07 16:56:19 +00:00
Alex Lorenz 56148a1bcc [www] Fix a typo on the analyzer website
llvm-svn: 285686
2016-11-01 11:12:41 +00:00
Richard Smith 6e5610fa4d Implement ABI proposal for throwing noexcept function pointers, per discussion
on cxx-abi-dev (thread starting 2016-10-11). This is currently hidden behind a
cc1-only -m flag, pending discussion of how best to deal with language changes
that require use of new symbols from the ABI library.

llvm-svn: 285664
2016-11-01 01:34:46 +00:00
Richard Smith eb1bf312d5 [cxx_status] update comment
llvm-svn: 285154
2016-10-26 01:37:36 +00:00
Richard Smith 6294a768e5 Mark P0012R1 as "Partial" since it's now substantially complete.
llvm-svn: 284907
2016-10-22 01:35:34 +00:00
Richard Smith 1be59c5106 [c++1z] P0012R1: Implement a few remaining pieces: downgrade diagnostic for
mismatched dynamic exception specifications in expressions from an error to a
warning, since this is no longer ill-formed in C++1z.

Allow reference binding of a reference-to-non-noexcept function to a noexcept
function lvalue. As defect resolutions, also allow a conditional between
noexcept and non-noexcept function lvalues to produce a non-noexcept function
lvalue (rather than decaying to a function pointer), and allow function
template argument deduction to deduce a reference to non-noexcept function when
binding to a noexcept function type.

llvm-svn: 284905
2016-10-22 01:32:19 +00:00
Richard Smith 5e9746f520 DR583, DR1512: Implement a rewrite to C++'s 'composite pointer type' rules.
This has two significant effects:

1) Direct relational comparisons between null pointer constants (0 and nullopt)
   and pointers are now ill-formed. This was always the case for C, and it
   appears that C++ only ever permitted by accident. For instance, cases like
     nullptr < &a
   are now rejected.

2) Comparisons and conditional operators between differently-cv-qualified
   pointer types now work, and produce a composite type that both source
   pointer types can convert to (when possible). For instance, comparison
   between 'int **' and 'const int **' is now valid, and uses an intermediate
   type of 'const int *const *'.

Clang previously supported #2 as an extension.

We do not accept the cases in #1 as an extension. I've tested a fair amount of
code to check that this doesn't break it, but if it turns out that someone is
relying on this, we can easily add it back as an extension.

This is a re-commit of r284800.

llvm-svn: 284890
2016-10-21 22:00:42 +00:00
Renato Golin 41189656ed Revert "DR583, DR1512: Implement a rewrite to C++'s 'composite pointer type' rules."
This reverts commit r284800, as it failed all ARM/AArch64 bots.

llvm-svn: 284811
2016-10-21 08:03:49 +00:00
Richard Smith 0c1c53e3fa DR583, DR1512: Implement a rewrite to C++'s 'composite pointer type' rules.
This has two significant effects:

1) Direct relational comparisons between null pointer constants (0 and nullopt)
   and pointers are now ill-formed. This was always the case for C, and it
   appears that C++ only ever permitted by accident. For instance, cases like
     nullptr < &a
   are now rejected.

2) Comparisons and conditional operators between differently-cv-qualified
   pointer types now work, and produce a composite type that both source
   pointer types can convert to (when possible). For instance, comparison
   between 'int **' and 'const int **' is now valid, and uses an intermediate
   type of 'const int *const *'.

Clang previously supported #2 as an extension.

We do not accept the cases in #1 as an extension. I've tested a fair amount of
code to check that this doesn't break it, but if it turns out that someone is
relying on this, we can easily add it back as an extension.

llvm-svn: 284800
2016-10-21 02:36:37 +00:00
Richard Smith 84a0b6dba1 DR1330: instantiate exception-specifications when "needed". We previously did
not instantiate exception specifications of functions if they were only used in
unevaluated contexts (other than 'noexcept' expressions).

In C++17 onwards, this becomes essential since the exception specification is
now part of the function's type.

Note that this means that constructs like the following no longer work:

  struct A {
    static T f() noexcept(...);
    decltype(f()) *p;
  };

... because the decltype expression now needs the exception specification of
'f', which has not yet been parsed.

llvm-svn: 284549
2016-10-18 23:39:12 +00:00
Dominic Chen a1ab61cd8b [analyzer] Update alpha and potential checker documentation, esp. alpha.valist
Summary:
Move alpha.valist from potential to alpha since it was implemented in D15227

Cleanup some HTML comments, add a missing link

Reviewers: jordan_rose, zaks.anna

Subscribers: cfe-commits, xazax.hun

Differential Revision: https://reviews.llvm.org/D25663

llvm-svn: 284445
2016-10-18 01:15:19 +00:00
Richard Smith f5d8a75efa Mark aligned allocation as done.
llvm-svn: 283724
2016-10-10 06:55:42 +00:00
Richard Smith a560ccf2af Switch to a different workaround for unimplementability of P0145R3 in MS ABIs.
Instead of ignoring the evaluation order rule, ignore the "destroy parameters
in reverse construction order" rule for the small number of problematic cases.
This only causes incorrect behavior in the rare case where both parameters to
an overloaded operator <<, >>, ->*, &&, ||, or comma are of class type with
non-trivial destructor, and the program is depending on those parameters being
destroyed in reverse construction order.

We could do a little better here by reversing the order of parameter
destruction for those functions (and reversing the argument evaluation order
for all direct calls, not just those with operator syntax), but that is not a
complete solution to the problem, as the same situation can be reached by an
indirect function call.

Approach reviewed off-line by rnk.

llvm-svn: 282777
2016-09-29 21:30:12 +00:00
Richard Smith 27143d82f0 Mark P0127R3 as done, and replace its __has_feature check with the corresponding SD-6 macro.
llvm-svn: 282652
2016-09-29 00:08:05 +00:00
Richard Smith e2bf878d59 cxx_status: use HTML5 details/summary elements to hide implementation status
tables for fully-implemented language modes by default. Also add some missing
elements to TS support table.

llvm-svn: 282631
2016-09-28 21:01:37 +00:00
Richard Smith 6e4bedc0d7 Add a couple more tentative names for upcoming SD-6 feature checks. These might
not reflect the final chosen names, but supporting them now seems to have
little downside.

llvm-svn: 282629
2016-09-28 20:42:56 +00:00
Richard Smith 38d91d49ce P0095R3: Implement the latest published revision of SD-6 (C++ feature test macros).
llvm-svn: 282627
2016-09-28 20:26:06 +00:00
Richard Smith b02043cd0f P0096R2: Implement more recent revision of SD-6 (C++ feature test macros).
llvm-svn: 282622
2016-09-28 19:44:50 +00:00
Richard Smith 018811000c Long-overdue update to cxx_status: C++14 is no longer "upcoming".
llvm-svn: 282621
2016-09-28 19:22:36 +00:00
Richard Smith 762672a73a Re-commit r282556, reverted in r282564, with a fix to CallArgList::addFrom to
function correctly when targeting MS ABIs (this appears to have never mattered
prior to this change).

Update test case to always cover both 32-bit and 64-bit Windows ABIs, since
they behave somewhat differently from each other here.

Update test case to also cover operators , && and ||, which it appears are also
affected by P0145R3 (they're not explicitly called out by the design document,
but this is the emergent behavior of the existing wording).


Original commit message:

P0145R3 (C++17 evaluation order tweaks): evaluate the right-hand side of
assignment and compound-assignment operators before the left-hand side. (Even
if it's an overloaded operator.)

This completes the implementation of P0145R3 + P0400R0 for all targets except
Windows, where the evaluation order guarantees for <<, >>, and ->* are
unimplementable as the ABI requires the function arguments are evaluated from
right to left (because parameter destructors are run from left to right in the
callee).

llvm-svn: 282619
2016-09-28 19:09:10 +00:00
Richard Smith 4499145a5f Revert r282556. This change made several bots unhappy.
llvm-svn: 282564
2016-09-28 02:20:06 +00:00
Richard Smith 97a616d624 P0145R3 (C++17 evaluation order tweaks): evaluate the right-hand side of
assignment and compound-assignment operators before the left-hand side. (Even
if it's an overloaded operator.)

This completes the implementation of P0145R3 + P0400R0 for all targets except
Windows, where the evaluation order guarantees for <<, >>, and ->* are
unimplementable as the ABI requires the function arguments are evaluated from
right to left (because parameter destructors are run from left to right in the
callee).

llvm-svn: 282556
2016-09-27 23:44:22 +00:00
Sylvestre Ledru 16f4ebbb91 In the get started page, also explain how to start the testsuite
llvm-svn: 282402
2016-09-26 13:22:34 +00:00
Sylvestre Ledru ac2f1933d4 update the link to the code coverage
llvm-svn: 282400
2016-09-26 12:53:53 +00:00
Richard Smith e4caa48dbb DR259: Demote the pedantic error for an explicit instantiation after an
explicit specialization to a warning for C++98 mode (this is a defect report
resolution, so per our informal policy it should apply in C++98), and turn
the warning on by default for C++11 and later. In all cases where it fires, the
right thing to do is to remove the pointless explicit instantiation.

llvm-svn: 280308
2016-08-31 23:23:25 +00:00
Devin Coughlin 0fb33f9690 [www] Add nullability questions to analyzer FAQ.
llvm-svn: 279330
2016-08-19 22:04:45 +00:00
Devin Coughlin 9ec2cb600b [www] Add analyzer FAQ about not releasing ivars in -dealloc.
llvm-svn: 279183
2016-08-19 01:22:50 +00:00
Richard Smith b1a268aae7 cxx_status: update features implemented in clang 3.9 from "svn" to "Clang 3.9" now that svn trunk is 4.0.
llvm-svn: 278650
2016-08-15 02:47:23 +00:00
Richard Smith 6ec6b248ab cxx_status: mark decomposition declarations as "partial": the implementation is
essentially complete, other than parts where design questions have been raised
(lambda capture, decomposition of arrays by copy).

llvm-svn: 278649
2016-08-15 02:37:43 +00:00
Artem Dergachev d73c57c328 [analyzer] Update the web manual for checker developers.
Fix the explanation of how to run tests after migration
from autotools to cmake.

Significantly expand the "debugging" section
with more interesting stuff.

Update the table of contents accordingly.

Fix paragraphs in the overview section.

Differential Revision: https://reviews.llvm.org/D22874

llvm-svn: 277029
2016-07-28 20:13:14 +00:00
Hans Wennborg d63a6620a7 Update cxx_dr_Status after 3.9 branch
llvm-svn: 276887
2016-07-27 16:39:45 +00:00
Richard Smith 63497c6492 www/cxx_status: give more precise links to initialization order wording
llvm-svn: 275351
2016-07-14 00:14:59 +00:00
Richard Smith a547eb27fa P0305R0: Semantic analysis and code generation for C++17 init-statement for 'if' and 'switch':
if (stmt; condition) { ... }

Patch by Anton Bikineev! Some minor formatting and comment tweets by me.

llvm-svn: 275350
2016-07-14 00:11:03 +00:00
Richard Smith 4a93c59e7f cxx_status: make c++17 footnote list formatting consistent with other footnote lists.
llvm-svn: 274060
2016-06-28 20:37:43 +00:00
Richard Smith 1aad29dfd2 cxx_status: fix footnote for p0136.
llvm-svn: 274059
2016-06-28 20:37:00 +00:00
Richard Smith 168c0e2789 Update cxx_dr_status from test/CXX/drs.
llvm-svn: 274058
2016-06-28 20:35:53 +00:00
Richard Smith 5179eb7821 P0136R1, DR1573, DR1645, DR1715, DR1736, DR1903, DR1941, DR1959, DR1991:
Replace inheriting constructors implementation with new approach, voted into
C++ last year as a DR against C++11.

Instead of synthesizing a set of derived class constructors for each inherited
base class constructor, we make the constructors of the base class visible to
constructor lookup in the derived class, using the normal rules for
using-declarations.

For constructors, UsingShadowDecl now has a ConstructorUsingShadowDecl derived
class that tracks the requisite additional information. We create shadow
constructors (not found by name lookup) in the derived class to model the
actual initialization, and have a new expression node,
CXXInheritedCtorInitExpr, to model the initialization of a base class from such
a constructor. (This initialization is special because it performs real perfect
forwarding of arguments.)

In cases where argument forwarding is not possible (for inalloca calls,
variadic calls, and calls with callee parameter cleanup), the shadow inheriting
constructor is not emitted and instead we directly emit the initialization code
into the caller of the inherited constructor.

Note that this new model is not perfectly compatible with the old model in some
corner cases. In particular:
 * if B inherits a private constructor from A, and C uses that constructor to
   construct a B, then we previously required that A befriends B and B
   befriends C, but the new rules require A to befriend C directly, and
 * if a derived class has its own constructors (and so its implicit default
   constructor is suppressed), it may still inherit a default constructor from
   a base class

llvm-svn: 274049
2016-06-28 19:03:57 +00:00
Richard Smith 62f19e700d Implement C++17 P0386R2, inline variables. (The 'inline' specifier gives a
variable weak discardable linkage and partially-ordered initialization, and is
implied for constexpr static data members.)

llvm-svn: 273754
2016-06-25 00:15:56 +00:00
Richard Smith 90ea9ebb00 Correct error in change description.
llvm-svn: 273683
2016-06-24 14:23:32 +00:00
Richard Smith bd07d42deb Remaining motions pass.
llvm-svn: 273681
2016-06-24 14:10:58 +00:00
Richard Smith 7541c32b2c Inline variables tentatively approved for C++17.
llvm-svn: 273680
2016-06-24 14:04:07 +00:00
Richard Smith 2517843eaf Updates from further motions.
llvm-svn: 273676
2016-06-24 13:25:08 +00:00
Richard Smith 3a2dc6f00c More approved features for C++17.
llvm-svn: 273668
2016-06-24 12:21:30 +00:00
Richard Smith 5bb7d7a84f Dynamic memory allocation with alignment has been approved for C++17.
llvm-svn: 273667
2016-06-24 12:16:11 +00:00
Richard Smith b7d7a046d8 Using for attributes voted into C++17.
llvm-svn: 273666
2016-06-24 12:15:12 +00:00
Richard Smith 74f56e7de2 Add (commented out) status entries for the upcoming WG21 motions.
llvm-svn: 273662
2016-06-24 11:20:31 +00:00
Richard Smith b130fe7d31 Implement p0292r2 (constexpr if), a likely C++1z feature.
llvm-svn: 273602
2016-06-23 19:16:49 +00:00
Richard Smith 4bc32f28a9 Add test for DR1359.
llvm-svn: 272575
2016-06-13 19:04:44 +00:00
Devin Coughlin 37d3264a30 [www][analyzer] Update recommended suppression mechanism for localization.
Based on feedback from Jordan Rose, make the recommended suppression function be 'static
inline'.

llvm-svn: 268768
2016-05-06 18:13:30 +00:00
Devin Coughlin b1255de973 [www][analyzer] Add FAQ about suppression of missing localization diagnostic.
llvm-svn: 268764
2016-05-06 17:51:34 +00:00
Richard Smith c1e50d5090 Documentation updates for recent changes to VLAs and default-initialization of const-qualified class objects.
llvm-svn: 268600
2016-05-05 02:53:55 +00:00
Adrian McCarthy 02d0a635d6 Add warning about CR+LF line endings on Windows.
s/checkout/check out/ when used as a verb.

Differential Revision: http://reviews.llvm.org/D19285

llvm-svn: 266887
2016-04-20 16:43:34 +00:00
Reid Kleckner 88cbe5a1cc Update getting started docs
compiler-rt is optional. We often get email from users with compiler-rt
build errors who don't actually need compiler-rt. Marking it optional
should help them avoid those potential problems.

While I'm here, update a reference to the build directory and remove an
obsolete reference to llvm-gcc. Nobody today is under the impression
that Clang depends on GCC.

llvm-svn: 265963
2016-04-11 17:02:34 +00:00
Mike Spertus 6601a4420b Use VS2015 Project Support for Natvis to eliminate the need to manually install clang native visualizer
This is the clang equivalent to llvm commit 264601. When using Visual Studio 2015, cmake now puts the native visualizers in llvm.sln, so the developer automatically sees custom visualizations.
Much thanks to ariccio who provided extensive help on this change. (manual installation still needed on VS2013).

llvm-svn: 264603
2016-03-28 18:03:37 +00:00
Richard Smith ed638864d3 P0138R2: Allow direct-list-initialization of an enumeration from an integral
value that can convert to the enum's underlying type.

llvm-svn: 264564
2016-03-28 06:08:37 +00:00
Richard Smith fd55fc86ed Make SemaAccess smarter about determining when a dependent class might
instantiate to match a friend class declaration. It's still pretty dumb,
though.

llvm-svn: 264189
2016-03-23 20:39:06 +00:00
Faisal Vali dc6b596ebb [Cxx1z] Implement Lambda Capture of *this by Value as [=,*this] (P0018R3)
Implement lambda capture of *this by copy.
For e.g.:
struct A {

  int d = 10;
  auto foo() { return [*this] (auto a) mutable { d+=a; return d; }; }

};

auto L = A{}.foo(); // A{}'s lifetime is gone.

// Below is still ok, because *this was captured by value.
assert(L(10) == 20);
assert(L(100) == 120);

If the capture was implicit, or [this] (i.e. *this was captured by reference), this code would be otherwise undefined.

Implementation Strategy:
  - amend the parser to accept *this in the lambda introducer
  - add a new king of capture LCK_StarThis
  - teach Sema::CheckCXXThisCapture to handle by copy captures of the
    enclosing object (i.e. *this)
  - when CheckCXXThisCapture does capture by copy, the corresponding 
    initializer expression for the closure's data member 
    direct-initializes it thus making a copy of '*this'.
  - in codegen, when assigning to CXXThisValue, if *this was captured by 
    copy, make sure it points to the corresponding field member, and
    not, unlike when captured by reference, what the field member points
    to.
  - mark feature as implemented in svn

Much gratitude to Richard Smith for his carefully illuminating reviews!   

llvm-svn: 263921
2016-03-21 09:25:37 +00:00
Richard Smith 25dde97526 Mark C++ features implemented in Clang 3.8 as done now that 3.8 has released.
llvm-svn: 263896
2016-03-20 10:37:12 +00:00
Richard Smith 01694c340d P0184R0: Allow types of 'begin' and 'end' expressions in range-based for loops to differ.
llvm-svn: 263895
2016-03-20 10:33:40 +00:00
Aaron Ballman 0bcd6c1b18 Implement support for [[maybe_unused]] in C++1z that is based off existing support for unused, and treat it as an extension pre-C++1z. This also means extending the existing unused attribute so that it can be placed on an enum and enumerator, in addition to the other subjects.
llvm-svn: 263025
2016-03-09 16:48:08 +00:00
Richard Smith 872307e2ac P0017R1: In C++1z, an aggregate class can have (public non-virtual) base classes; these are initialized as if they were data members.
llvm-svn: 262963
2016-03-08 22:17:41 +00:00
Richard Smith 89e9597a50 Use class="svn" for features with SVN status.
llvm-svn: 262889
2016-03-08 00:45:37 +00:00
Richard Smith 4f902c7ecc P0188R1: add support for standard [[fallthrough]] attribute. This is almost
exactly the same as clang's existing [[clang::fallthrough]] attribute, which
has been updated to have the same semantics. The one significant difference
is that [[fallthrough]] is ill-formed if it's not used immediately before a
switch label (even when -Wimplicit-fallthrough is disabled). To support that,
we now build a CFG of any function that uses a '[[fallthrough]];' statement
to check.

In passing, fix some bugs with our support for statement attributes -- in
particular, diagnose their use on declarations, rather than asserting.

llvm-svn: 262881
2016-03-08 00:32:55 +00:00
Aaron Ballman e7964789da Implement support for [[nodiscard]] in C++1z that is based off existing support for warn_unused_result, and treat it as an extension pre-C++1z. This also means extending the existing warn_unused_result attribute so that it can be placed on an enum as well as a class.
llvm-svn: 262872
2016-03-07 22:44:55 +00:00
Richard Smith 8ee39e31bb Implement P0036R0: remove support for empty unary folds of +, *, |, &.
llvm-svn: 262747
2016-03-04 21:27:21 +00:00
Richard Smith f006a96aff Update cxx_status with likely new features from Jacksonville WG21 meeting.
llvm-svn: 262743
2016-03-04 21:01:14 +00:00
Nico Weber 6a6376b17c Implement the likely resolution of core issue 253.
C++11 requires const objects to have a user-provided constructor, even for
classes without any fields. DR 253 relaxes this to say "If the implicit default
constructor initializes all subobjects, no initializer should be required."

clang is currently the only compiler that implements this C++11 rule, and e.g.
libstdc++ relies on something like DR 253 to compile in newer versions.  This
change  makes it possible to build code that says `const vector<int> v;' again
when using libstdc++5.2 and _GLIBCXX_DEBUG
(https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60284).

Fixes PR23381.

http://reviews.llvm.org/D16552

llvm-svn: 261297
2016-02-19 01:52:46 +00:00
Nico Weber 5f1c2851cc Update cxx_dr_status.html with today's cwg_index.html.
Created by:
cd www
curl -O http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_index.html
./make_cxx_dr_status

llvm-svn: 261295
2016-02-19 01:49:39 +00:00
Yury Gribov a6560ebe4c [analyzer] Add --force-analyze-debug-code option to scan-build
to force debug build and hopefully enable more precise warnings.

Static Analyzer is much more efficient when built in debug mode
(-UNDEBUG) so we advice users to enable it manually. This may be
inconvenient in case of large complex projects (think about Linux
distros e.g. Android or Tizen). This patch adds a flag to scan-build
which inserts -UNDEBUG automatically.

Differential Revision: http://reviews.llvm.org/D16200

llvm-svn: 261204
2016-02-18 11:08:46 +00:00
Mandeep Singh Grang a2623c8739 Test commit, fixed "clang" to "Clang" in docs
Reviewers: weimingz

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D17085

llvm-svn: 260433
2016-02-10 21:06:10 +00:00
Richard Smith 952923be11 Update documentation to reflect that libc++abi provides __cxa_thread_atexit (and has for quite a while). Also document that we have not yet implemented the new inheriting constructor rules.
llvm-svn: 260311
2016-02-09 22:48:14 +00:00
Devin Coughlin 81f240a3ff [www] Update analyzer release notes to correct the checker-278 build date.
This is not the future.

llvm-svn: 259969
2016-02-06 00:59:14 +00:00
Devin Coughlin ca14ce0f1d [www] Update analyzer website for checker-278.
llvm-svn: 259967
2016-02-06 00:53:33 +00:00
David Majnemer 31be598153 Mark DR1250 as implemented
We implemented this DR back in r258768 but forgot to mark it as
implemented.

llvm-svn: 259335
2016-02-01 01:33:17 +00:00
Alexey Samsonov 433c43cd85 Remove references to autotools build.
llvm-svn: 259278
2016-01-30 00:54:42 +00:00
Richard Smith 2761508fcd Update cxx_dr_status for latest issues list.
llvm-svn: 257698
2016-01-13 22:58:22 +00:00
Richard Smith ba651344a8 Update make_cxx_dr_status after the 3.8 branch.
llvm-svn: 257695
2016-01-13 22:51:59 +00:00
Hans Wennborg e3391d7ef9 Update cxx_dr_status.html after the 3.8 branch
llvm-svn: 257652
2016-01-13 19:14:03 +00:00
Richard Smith 9043d75e75 Fix grammar.
llvm-svn: 255727
2015-12-16 00:19:23 +00:00
Richard Smith e873686e3c Update our claims about GCC's diagnostics quality to reflect recent improvements to GCC.
llvm-svn: 255726
2015-12-16 00:18:47 +00:00
Richard Smith 90ae7922b5 These days, GCC has at least minimal documentation for its VLAIS extension.
llvm-svn: 255723
2015-12-16 00:09:57 +00:00
Justin Bogner 78a9db7ae0 www: Mention -DGCC_INSTALL_PREFIX instead of --with-gcc-toolchain
Since the instructions use cmake, we should probably refer to the
cmake flags and not the configure ones.

llvm-svn: 255297
2015-12-10 20:52:59 +00:00
Richard Smith 85864d5b43 Update reference to final TM TS spec.
llvm-svn: 254123
2015-11-26 02:23:21 +00:00
Richard Smith 4a0cd89325 P0002R1: increment on expressions of type bool is no longer allowed in C++1z.
llvm-svn: 254122
2015-11-26 02:16:37 +00:00
Richard Smith 291027692f P0001R1: 'register' storage class specifier is no longer permitted in C++1z.
We will still allow it in system headers, in macros from system headers, when
combined with an 'asm' label, and under the flag -Wno-register.

llvm-svn: 254097
2015-11-25 21:34:21 +00:00
Richard Smith 990668b7d0 DR407: Rationalize how we handle tags being hidden by typedefs. Even with
DR407, the C++ standard doesn't really say how this should work. Here's what we
do (which is consistent with DR407 as far as I can tell):

 * When performing name lookup for an elaborated-type-specifier, a tag
   declaration hides a typedef declaration that names the same type.
 * When performing any other kind of lookup, a typedef declaration hides
   a tag declaration that names the same type.

In any other case where lookup finds both a typedef and a tag (that is, when
they name different types), the lookup will be ambiguous. If lookup finds a
tag and a typedef that name the same type, and finds anything else, the lookup
will always be ambiguous (even if the other entity would hide the tag, it does
not also hide the typedef).

llvm-svn: 252959
2015-11-12 22:04:34 +00:00
Richard Smith 42b1057244 N3922: direct-list-initialization of an auto-typed variable no longer deduces a
std::initializer_list<T> type. Instead, the list must contain a single element
and the type is deduced from that.

In Clang 3.7, we warned by default on all the cases that would change meaning
due to this change. In Clang 3.8, we will support only the new rules -- per
the request in N3922, this change is applied as a Defect Report against earlier
versions of the C++ standard.

This change is not entirely trivial, because for lambda init-captures we
previously did not track the difference between direct-list-initialization and
copy-list-initialization. The difference was not previously observable, because
the two forms of initialization always did the same thing (the elements of the
initializer list were always copy-initialized regardless of the initialization
style used for the init-capture).

llvm-svn: 252688
2015-11-11 01:36:17 +00:00
Jonathan Roelofs e961432ae7 Create install targets for scan-build and scan-view
http://reviews.llvm.org/D14403

llvm-svn: 252474
2015-11-09 16:12:56 +00:00
Richard Smith ea26041bbb Better link for Library Fundamentals TS.
llvm-svn: 252223
2015-11-05 22:21:52 +00:00
Richard Smith 3f22bf947d Fix incorrect status for P0012R1.
llvm-svn: 252216
2015-11-05 21:42:32 +00:00
Richard Smith 60fc149e43 Fix CSS style name.
llvm-svn: 252215
2015-11-05 21:42:07 +00:00
Richard Smith 894835f611 Update C++ status page to match motions from Kona.
llvm-svn: 252214
2015-11-05 21:41:06 +00:00
Ehsan Akhgari f16435d85e Add a link to the DXR project
DXR is a project developed at Mozilla that implements a code indexing
and browsing utility on top of libclang that has features such as
call graph querying.

llvm-svn: 251638
2015-10-29 17:20:17 +00:00
Devin Coughlin 97f78cfa28 [analyzer] Update analyzer website for release of checker-277.
llvm-svn: 251591
2015-10-29 01:23:57 +00:00
Anna Zaks ac98dbc33b [analyzer] Enhance FAQ with instructions on handing unused variables.
llvm-svn: 251448
2015-10-27 20:19:38 +00:00
Jordan Rose 76a74c5617 [analyzer] Update links to developer.apple.com.
The content at the new links is /also/ a little dated, but that's our
(Apple's) problem.

llvm-svn: 247999
2015-09-18 16:12:16 +00:00
Yury Gribov daace1bb6b Mention that libcxx is required to build Compiler-RT tests on OS X.
llvm-svn: 247696
2015-09-15 15:05:47 +00:00
Tanya Lattner 4a08e931b6 Update mailing list references to lists.llvm.org
llvm-svn: 244000
2015-08-05 03:55:23 +00:00
Davide Italiano 9e1006d785 Revert r243827.
Until I figure out what's the right way of updating this file.

llvm-svn: 243840
2015-08-01 18:25:03 +00:00
Davide Italiano 2dd004487d Convertibility of nullptr_t to bool is available in clang. Note it.
llvm-svn: 243827
2015-08-01 05:48:03 +00:00
Hans Wennborg 3f398b51fb Update cxx_dr_status.html after 3.7 branch
llvm-svn: 242244
2015-07-14 23:21:53 +00:00
Richard Smith 88fe69ce21 DR1909: Diagnose all invalid cases of a class member sharing its name with the class.
llvm-svn: 241425
2015-07-06 01:45:27 +00:00
Eric Christopher 2c4555ad1b Fix "the the" in comments/documentation/etc.
llvm-svn: 240110
2015-06-19 01:52:53 +00:00
Faisal Vali 24d59d14ba "This adds -fconcepts-ts as a cc1 option for enabling the
in-progress implementation of the Concepts TS. The recommended feature
test macro __cpp_experimental_concepts is set to 1 (as opposed to
201501) to indicate that the feature is enabled, but the
implementation is incomplete.

The link to the Concepts TS in cxx_status is updated to refer to the
PDTS (N4377). Additional changes related to __has_feature and
__has_extension are to follow in a later change.

Relevant tests include:

test/Lexer/cxx-features.cpp

The test file is updated with testing of the C++14 + Concepts TS mode.
The expected behaviour is the same as that of the C++14 modes except
for the case of __cpp_experimental_concepts."

- Hubert Tong.

Being committed for Hubert (as per his understanding with Richard Smith) as we start work on the concepts-ts following our preliminary strategy session earlier today. 

The patch is tiny and seems quite standard.

Thanks Hubert!

llvm-svn: 237982
2015-05-22 01:11:10 +00:00
Jonathan Roelofs 99bdd98a2b Fix 'CFG graph' typo. NFC
Patch by Jon Eyolfson!

llvm-svn: 237713
2015-05-19 18:51:56 +00:00
Richard Smith a462b4c9ac DR295: cv-qualifiers on function types are ignored in C++.
llvm-svn: 237383
2015-05-14 19:10:42 +00:00
Richard Smith 2d5814c2d4 Update cxx_dr_status to latest issues list.
llvm-svn: 237382
2015-05-14 19:07:47 +00:00
Yaron Keren 9f88702ac6 Update the subversion link to http://subversion.apache.org/packages.html.
llvm-svn: 236734
2015-05-07 15:15:16 +00:00
Yaron Keren 37f99ed0fb Fix clang getting started guide to require VC2013 instead of VS2012.
llvm-svn: 236733
2015-05-07 15:12:30 +00:00
Alexey Samsonov ec0bff9262 Recommend to use CMake on the Clang Getting Started page.
llvm-svn: 235402
2015-04-21 18:38:31 +00:00
Benjamin Kramer 6dcddc21f8 Mark DR777 only as fixed in clang SVN.
llvm-svn: 233391
2015-03-27 17:38:35 +00:00
Benjamin Kramer fe25759022 [Sema] Implement DR777
A parameter pack after a default argument is now valid.

PR23029.

llvm-svn: 233377
2015-03-27 13:58:41 +00:00
Reid Kleckner 7ffc3fbb2f C++14: Disable sized deallocation by default due to ABI breakage
There are no widely deployed standard libraries providing sized
deallocation functions, so we have to punt and ask the user if they want
us to use sized deallocation. In the future, when such libraries are
deployed, we can teach the driver to detect them and enable this
feature.

N3536 claimed that a weak thunk from sized to unsized deallocation could
be emitted to avoid breaking backwards compatibility with standard
libraries not providing sized deallocation. However, this approach and
other variations don't work in practice.

With the weak function approach, the thunk has to have default
visibility in order to ensure that it is overridden by other DSOs
providing sized deallocation. Weak, default visibility symbols are
particularly expensive on MachO, so John McCall was considering
disabling this feature by default on Darwin. It also changes behavior
ELF linking behavior, causing certain otherwise unreferenced object
files from an archive to be pulled into the link.

Our second approach was to use an extern_weak function declaration and
do an inline conditional branch at the deletion call site. This doesn't
work because extern_weak only works on MachO if you have some archive
providing the default value of the extern_weak symbol. Arranging to
provide such an archive has the same challenges as providing the symbol
in the standard library. Not to mention that extern_weak doesn't really
work on COFF.

Reviewers: rsmith, rjmccall

Differential Revision: http://reviews.llvm.org/D8467

llvm-svn: 232788
2015-03-20 00:31:07 +00:00
Anton Yartsev 1c6ff0ac2e [analyzer] www: +progress for undefbehavior.ZeroAllocDereference
llvm-svn: 231978
2015-03-11 22:29:32 +00:00
Sylvestre Ledru b062fd587d Fix a menu issue. patch by Vassil Vassilev
llvm-svn: 231637
2015-03-09 09:09:55 +00:00
Hans Wennborg b202b27a22 Add a download link to the web page (PR22764)
llvm-svn: 231431
2015-03-06 00:13:55 +00:00
Larisse Voufo 17151eba64 Fix typo.
llvm-svn: 230579
2015-02-25 23:48:35 +00:00
Larisse Voufo 351f309dab Move -fdefine-sized-deallocation and -fno-sized-deallocation options from driver into CC1 for now.
llvm-svn: 230577
2015-02-25 23:48:25 +00:00
Larisse Voufo 01c97c0860 Fix typo.
llvm-svn: 230159
2015-02-22 06:36:49 +00:00
Larisse Voufo 0d0237f6cb Move -fdefine-sized-deallocation and -fno-sized-deallocation options from driver into CC1 for now.
llvm-svn: 230158
2015-02-22 06:36:46 +00:00
Larisse Voufo 2e5c25ac77 Fix typo.
llvm-svn: 230114
2015-02-21 01:05:29 +00:00
Larisse Voufo dcc0eddd18 Move -fdefine-sized-deallocation and -fno-sized-deallocation options from driver into CC1 for now.
llvm-svn: 230112
2015-02-21 01:03:48 +00:00
David Majnemer 12d3783add Mark DR1940 as implemented
llvm-svn: 229829
2015-02-19 07:29:01 +00:00
David Majnemer 6440548434 Mark DR1947 as implemented
llvm-svn: 229828
2015-02-19 07:28:57 +00:00
David Majnemer 7da2302780 Mark DR1948 as implemented
llvm-svn: 229827
2015-02-19 07:28:55 +00:00
David Majnemer 54dc82e1d2 Mark DR1994 as a duplicate of DR529
llvm-svn: 229826
2015-02-19 07:28:52 +00:00
David Majnemer 2dbad01349 Mark DR1968 as implemented
llvm-svn: 229825
2015-02-19 07:28:49 +00:00
Larisse Voufo ee3c1b2a71 Update C++ implementation status page with recent changes w.r.t. to sized deallocation.
llvm-svn: 229818
2015-02-19 04:34:13 +00:00
Richard Smith 3cfad7ee25 Update cxx_dr_status to cover dr1748 and add test.
llvm-svn: 229229
2015-02-14 03:38:31 +00:00
Benjamin Kramer eb0ad45f3f Update cxx_status to list features implemented in Clang 3.6.
Still yellow because 3.6 is unreleased. While there make Urbana paper
links clickable and list binary literals as available in Clang 2.9
(they've been available basically since the dawn of Clang, but not
having a version number in the table looks weird)

llvm-svn: 228571
2015-02-09 11:48:43 +00:00
Larisse Voufo 4891e74c39 Re-arrange DR test cases, and update DR status page.
llvm-svn: 227279
2015-01-28 01:01:21 +00:00
Richard Smith 48372b68fe DR1902: if overload resolution recurses, and the inner overload resolution
selects a deleted function, the outer function is still a candidate even though
the initialization sequence is "otherwise ill-formed".

llvm-svn: 227169
2015-01-27 03:30:40 +00:00
Hans Wennborg a38fb96796 Update cxx_dr_status.html after 3.6 branch
llvm-svn: 226008
2015-01-14 18:14:00 +00:00
Anton Yartsev df7a5b14c2 [analyzer] Updated progress for memory.ZeroAlloc
llvm-svn: 224797
2014-12-24 01:04:38 +00:00
Anton Yartsev 50a91cca17 [analyzer] +memory.ZeroAlloc
llvm-svn: 224796
2014-12-24 00:46:56 +00:00
Richard Smith 5a0e50cd87 DR1048: drop top-level cv-qualifiers when deducing the return type of a
lambda-expression in C++11, to match the C++14 rules.

llvm-svn: 224620
2014-12-19 22:10:51 +00:00
Richard Smith d52186ff5a DR1684: a constexpr member function need not be a member of a literal class type.
llvm-svn: 224388
2014-12-16 23:12:52 +00:00
Richard Smith 83d3f150c8 [c++1z] Remove terse range-based for loops; they've been removed from
consideration for C++17 for now. Update C++ status page to match.

llvm-svn: 222865
2014-11-27 01:54:27 +00:00
Richard Smith 410cc89374 [c++1z] Most of N4268 (allow constant evaluation for non-type template arguments).
We don't yet support pointer-to-member template arguments that have undergone
pointer-to-member conversions, mostly because we don't have a mangling for them yet.

llvm-svn: 222807
2014-11-26 03:26:53 +00:00
Aaron Ballman a0344c5d7b Complete support for the SD-6 standing document (based off N4200) with support for __has_cpp_attribute.
llvm-svn: 221991
2014-11-14 13:44:02 +00:00
Richard Smith 38af8561f9 Update Clang's SD-6 support to match N4200 (except for __has_cpp_attribute,
which we don't yet implement).

llvm-svn: 221816
2014-11-12 21:16:38 +00:00
Aaron Ballman 730476b50e [c++1z] Support for attributes on namespaces and enumerators.
llvm-svn: 221580
2014-11-08 15:33:35 +00:00
Richard Smith 3e3a705062 [c++1z] Support for u8 character literals.
llvm-svn: 221576
2014-11-08 06:08:42 +00:00
Richard Smith 13307f5f24 [c++1z] Implement nested-namespace-definitions.
This allows 'namespace A::B { ... }' as a shorthand for 'namespace A {
namespace B { ... } }'. We already supported this correctly for error recovery;
promote that support to a full implementation.

This is not the right implementation: we do not maintain source fidelity
because we desugar the nested namespace definition in the parser. This is
tricky to avoid, since the definition genuinely does inject one named
entity per level in the namespace name.

llvm-svn: 221574
2014-11-08 05:37:34 +00:00
Richard Smith 0f0af19b05 [c++1z] N4295: fold-expressions.
This is a new form of expression of the form:

  (expr op ... op expr)

where one of the exprs is a parameter pack. It expands into

  (expr1 op (expr2onwards op ... op expr))

(and likewise if the pack is on the right). The non-pack operand can be
omitted; in that case, an empty pack gives a fallback value or an error,
depending on the operator.

llvm-svn: 221573
2014-11-08 05:07:16 +00:00
Anton Yartsev 5ad0169855 [analyzer] Helpful hints for Windows users of scan-build.
llvm-svn: 220999
2014-10-31 20:57:57 +00:00
Anton Yartsev 9959295142 [analyzer] Updated tests for ZeroAllocDereference checker.
llvm-svn: 220911
2014-10-30 15:16:26 +00:00
Daniel Marjamaki 3f4062902a Update contact person in Open Projects webpage for copy-paste detection. From Per Viberg to Daniel Marjamäki.
llvm-svn: 220905
2014-10-30 12:44:33 +00:00
Richard Smith ab506adf7d Switch C compilations to C11 by default.
This is long-since overdue, and matches GCC 5.0. This should also be
backwards-compatible, because we already supported all of C11 as an extension
in C99 mode.

llvm-svn: 220244
2014-10-20 23:26:58 +00:00
Richard Smith 0680d8aa68 Per comments on PR12350, move DR244 back from 'done' to 'partial' and add tests showing what we get wrong.
llvm-svn: 220009
2014-10-17 01:03:17 +00:00
Richard Smith 31563ef090 Tests for DR600-640.
llvm-svn: 218591
2014-09-29 06:03:56 +00:00
Richard Smith 2d525eb9ad Tests for DR581-600.
llvm-svn: 217844
2014-09-15 22:56:03 +00:00
Richard Smith ee0a49c802 Update C++ status page to reflect that Clang 3.5 has released.
llvm-svn: 217609
2014-09-11 17:30:32 +00:00
Richard Smith c0d20ef22a Update DR status list to reflect that Clang 3.5 has been released.
llvm-svn: 217608
2014-09-11 17:29:13 +00:00
Richard Smith 414598e20a Tests for DR573-580.
llvm-svn: 217606
2014-09-11 17:28:14 +00:00
Richard Smith 8c9d2c7cc5 Remove suppression of dr547 test and instead test that deduction succeeds if we
use __thiscall. (This doesn't actually work for MSVC; they don't allow the
__thiscall qualifier here, but it's sufficient to demonstrate that we do
implement the intent of the DR.)

llvm-svn: 217213
2014-09-05 00:17:00 +00:00
Richard Smith a10a16264f Tests for DR550-572.
llvm-svn: 216953
2014-09-02 21:29:16 +00:00
Richard Smith 1b88632886 cxx_status: we did support some of C++14 in Clang 3.3.
llvm-svn: 216837
2014-08-31 04:18:54 +00:00
Richard Smith 20f3767f36 cxx_status: the name C++14 isn't provisional any more.
llvm-svn: 216836
2014-08-31 04:17:48 +00:00
Richard Smith fb640501a2 Tests for DR525-550.
llvm-svn: 216834
2014-08-31 03:06:20 +00:00
Richard Smith 707e3ba37c [cxx_status] Minor wording tweaks.
llvm-svn: 211471
2014-06-22 16:00:05 +00:00
Richard Smith e114c3a3ba [cxx_status] Be a bit more precise.
llvm-svn: 211470
2014-06-22 15:56:23 +00:00
Richard Smith 7cebe465ef Fix dead link.
llvm-svn: 211469
2014-06-22 15:54:54 +00:00
Richard Smith 4a4b357c90 C++ status page: restore the convention of saying "SVN" until we reach a release.
llvm-svn: 211398
2014-06-20 20:35:42 +00:00
Richard Smith a32124a231 Be less bold.
llvm-svn: 211397
2014-06-20 20:34:03 +00:00
Richard Smith cf31c6b6f2 [C++1z] Add C++1z to the C++ status page.
llvm-svn: 211396
2014-06-20 20:33:10 +00:00
Nico Weber 39f17b6d46 Tweak documentation.
1. Having "get started", "get involved", and "hacking" makes it hard to find
   how to send patches, so add a link from "get involved" to "hacking".
2. Remove an almost 5 year old note on the test running meachanism changing
   soon.
3. Let "hacking" link to the LLVM developer policy.

llvm-svn: 210826
2014-06-12 21:15:10 +00:00
Richard Smith 8de08a9627 Update DR page for latest revision of CWG issues list.
llvm-svn: 210130
2014-06-03 21:58:55 +00:00
Richard Smith 454a7cdfb3 Implement DR990 and DR1070. Aggregate initialization initializes uninitialized
elements from {}, rather than value-initializing them. This permits calling an
initializer-list constructor or constructing a std::initializer_list object.
(It would also permit initializing a const reference or rvalue reference if
that weren't explicitly prohibited by other rules.)

llvm-svn: 210091
2014-06-03 08:26:00 +00:00
David Majnemer e37a6ce9f7 Sema: Implement DR244
Summary:
Naming the destructor using a typedef-name for the class-name is
well-formed.

This fixes PR19620.

Reviewers: rsmith, doug.gregor

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D3583

llvm-svn: 209319
2014-05-21 20:19:59 +00:00
Anton Yartsev 45056dc50a [analyzer] Alpha and implicit checker lists, expand/collapse feature.
The list of alpha and the list of implicit checkers added. An ability to expand/collapse long texts added. Markup fixed.

http://reviews.llvm.org/D3457

llvm-svn: 209131
2014-05-19 15:04:55 +00:00
Richard Smith 6fdeaabda9 Correct incoherent function versus function template partial ordering for conversion operators (the comparison could claim that two conversion operators are both better than each other). Actually implement DR495, rather than passing its test by chance because the declarations happened to be in the "lucky" order.
llvm-svn: 209054
2014-05-17 01:58:45 +00:00
Richard Smith 10f22aa1ea Fix link target.
llvm-svn: 208376
2014-05-09 00:20:01 +00:00
Alp Toker 1fd1d5215c www: add a missing HTML open tag
This went AWOL in r207995.

llvm-svn: 208018
2014-05-06 00:17:24 +00:00
Alp Toker 871de4ff4d www: remove proprietary dbtree.js script from r96013
This minified source code and artwork is copied from a commercial product and
carries no license information:

  dbtree.js (7 kb), 25.03.2014 14:51:32
  Purchase and download DBTree now for only $29.75 $9.75

It was used by a small TOC which looks fine now as a plain unordered list.

llvm-svn: 207995
2014-05-05 19:53:49 +00:00
David Majnemer a2245271af Revert "Sema: Implement DR244"
This was accidentally committed.

This reverts commit r207892.

llvm-svn: 207893
2014-05-03 02:22:11 +00:00
David Majnemer 22fcb08357 Sema: Implement DR244
Naming the destructor using a typedef-name for the class-name is
well-formed.

This fixes PR19620.

llvm-svn: 207892
2014-05-03 02:18:46 +00:00
David Majnemer deca705593 Sema: Implement DR477
Summary: Friend declarations shouldn't mention explicit or virtual.

Reviewers: rsmith

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D3562

llvm-svn: 207682
2014-04-30 18:24:01 +00:00
Jordan Rose 1057e09432 [analyzer] Clean up the lists of current and potential checkers.
Patch by Anton Yartsev, modified by me.

llvm-svn: 207478
2014-04-29 00:46:17 +00:00
Sylvestre Ledru 7db5ab49cd remove less relevant information + about packaging/Mac OS X + link to cfe-dev
llvm-svn: 207362
2014-04-27 15:17:15 +00:00
Sylvestre Ledru ba3f838e70 Remove no longer relevant information in the gcc/llvm comparison page + minor updates
llvm-svn: 207361
2014-04-27 15:02:05 +00:00
Sylvestre Ledru 39f85b185c Remove deprecated information about performances:
* It is better if we leave third parties to do "independent" benchmark.
* We compare Clang (version unspecified) with gcc 4.0 or 4.2.
* The graphs have not been updated for a while.
* Clang is well known now. I don't think we still need to explain why
Clang is great.

llvm-svn: 207358
2014-04-27 14:54:11 +00:00
Richard Smith c7f9bb1757 Tests for DR501-525.
llvm-svn: 206123
2014-04-13 00:40:32 +00:00
Jordan Rose 7f07fc1fee [analyzer] Fix mistake in example for potential checker "posix.Errno".
Found by Richard Osbourne!

llvm-svn: 205721
2014-04-07 16:36:15 +00:00
Jordan Rose 4d6da2bb4f [analyzer] Add an ErrnoChecker (PR18701) to the Potential Checkers list.
llvm-svn: 205667
2014-04-05 06:10:28 +00:00
Jordan Rose a32968fc10 [analyzer] Update Open Projects page with BitwiseConstraintManager.
Also, add the names of people most recently working on particular projects,
and remove "relate bugs and checkers" (thanks, Alex!).

llvm-svn: 205666
2014-04-05 06:10:22 +00:00
Richard Smith 5557f6d678 Add failing testcase for DR305. Looks like we didn't implement the resolution
here in the simple-template-id case.

llvm-svn: 205273
2014-04-01 01:58:11 +00:00
David Majnemer ee4f4025c3 Sema: Implement DR317
Summary:
Declaring a function as inline after it has been defined is in violation
of [dcl.fct.spec]p4.  The program would get a strong definition instead
of getting a function with linkonce_odr linkage.

Reviewers: rsmith

CC: cfe-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D3220

llvm-svn: 205129
2014-03-30 06:44:54 +00:00
Richard Smith 6190ee65e1 Tests for dr475-dr500.
llvm-svn: 205127
2014-03-30 06:05:29 +00:00
Jordan Rose 6fc2ec96b8 [analyzer] Remove the implemented Identical* checkers from the "potential" list.
Edit by Daniel Fahlgren.

llvm-svn: 204842
2014-03-26 18:59:22 +00:00
Richard Smith 17710217fa Tests for DR450-475.
llvm-svn: 204217
2014-03-19 08:04:12 +00:00
Richard Smith ba41a73993 Tests for DR400-450.
llvm-svn: 204033
2014-03-17 08:20:10 +00:00
Richard Smith 7e34fbdaa0 Add two missing entries to the C++11 support page. Bump one relevant diagnostic
(for an integer too large for any signed type) from Warning to ExtWarn -- it's
ill-formed in C++11 and C99 onwards, and UB during translation in C89 and
C++98. Add diagnostic groups for two relevant diagnostics.

llvm-svn: 203974
2014-03-14 21:21:24 +00:00
Richard Smith d997cce05f Try to remove confusion about C++11 feature support:
* Explicitly say that we conform to the two N/A bullets that required no
   compiler changes.
 * Remove a library feature from our features list.

llvm-svn: 203964
2014-03-14 20:26:09 +00:00
Richard Smith 4a558a44a0 Tests for DR389-399.
llvm-svn: 203771
2014-03-13 08:40:37 +00:00
Richard Smith 66204ecff9 DR1346: a parenthesized braced-init-list cannot be used as the initializer when
performing auto type deduction.

llvm-svn: 203683
2014-03-12 17:42:45 +00:00
Richard Smith b81b196a58 Tests for DR381-388.
llvm-svn: 203549
2014-03-11 07:49:32 +00:00
Nico Weber ab88f0b12f "Mac OS/X" -> "Mac OS X" spelling fixes for clang.
Patch from Sean McBride <sean@rogue-research.com>!

llvm-svn: 203259
2014-03-07 18:09:57 +00:00
Richard Smith a13f8ae84e DR status page: add link targets for individual DRs, and link duplicates.
llvm-svn: 203022
2014-03-05 23:02:47 +00:00
Richard Smith faf156ad15 Tests for DR370-380.
Also promote a couple of Warnings on ill-formed code found by this testing to
ExtWarns.

llvm-svn: 203021
2014-03-05 22:54:58 +00:00
Richard Smith 2f0e4e78b2 Add tests for newly-resolved core issues <= 370.
llvm-svn: 202889
2014-03-04 21:14:30 +00:00
Richard Smith 37213e219b Update DR status page to match post-Issaquah core issues list.
llvm-svn: 202886
2014-03-04 20:44:20 +00:00
Richard Smith 586cd94340 Add links to TSen from post-Issaquah mailing.
llvm-svn: 202882
2014-03-04 20:22:54 +00:00
Ted Kremenek 2e25fbfc11 [analyzer] post analyzer build checker-276
llvm-svn: 201648
2014-02-19 08:09:22 +00:00
David Majnemer 141a7b5402 Remove gunk from cxx_dr_status.html
Accidentally piped the stdout from make_cxx_dr_status into
cxx_dr_status.html

llvm-svn: 201634
2014-02-19 03:21:27 +00:00
David Majnemer 49864d6676 Regenerate DR status page.
llvm-svn: 201632
2014-02-19 03:03:21 +00:00
Richard Smith efa20ae276 Remove transactional memory from c++ status page; there's no working paper for it yet.
llvm-svn: 201452
2014-02-15 00:48:38 +00:00
Richard Smith 78c7bbb430 Add some missing threes.
llvm-svn: 201449
2014-02-15 00:29:44 +00:00
Richard Smith 3a0ed87ed9 Add entries to C++ status page for Technical Specification Working Papers that
WG21 is about to vote on.

llvm-svn: 201448
2014-02-15 00:29:00 +00:00
Richard Smith cc4a72ecd2 Tests for DR351-370, plus update DR status page to match the latest core issue list.
llvm-svn: 201106
2014-02-10 19:53:17 +00:00
Richard Smith 18819307d3 DR101, PR12770: If a function is declared in the same context as a
using-declaration, and they declare the same function (either because
the using-declaration is in the same namespace as the declaration it
imports, or because they're both extern "C"), they do not conflict.

llvm-svn: 200897
2014-02-06 01:31:33 +00:00
Richard Smith 5e34db94bb Fix typo in CSS class name.
llvm-svn: 200680
2014-02-03 07:02:19 +00:00
Richard Smith 7fe896251d Clang 3.4 was released, make the boxes green.
llvm-svn: 200679
2014-02-03 06:58:08 +00:00
Richard Smith c94410bc8d Tests for DR331-350.
llvm-svn: 200678
2014-02-03 06:34:23 +00:00
Richard Smith 209bbb7774 Update C++ DR page now 3.4 has been released.
llvm-svn: 200674
2014-02-03 02:40:25 +00:00
Richard Smith 91dfaacd38 Implement DR329. We already did the right thing here in C++98 mode, but r104014
(which implemented the DR) was disabled in C++11.

llvm-svn: 200673
2014-02-03 02:37:59 +00:00
Richard Smith 9f38709193 Tests for DR321-330.
llvm-svn: 200672
2014-02-03 02:13:49 +00:00
Richard Smith 6938adbd16 Tests for DR301-320.
llvm-svn: 200671
2014-02-03 01:23:27 +00:00
Nikola Smiljanic d8fe631d7f Update debugging visualizers section.
llvm-svn: 200460
2014-01-30 07:15:53 +00:00
Richard Smith 6a6a4bbdd4 PR17052 / DR1560 (+DR1550): In a conditional expression between a glvalue and a
throw-expression, the result is also a glvalue and isn't unnecessarily coerced
to a prvalue.

llvm-svn: 200189
2014-01-27 04:19:56 +00:00
Richard Smith a8e1e9b143 Correct < and > to &lt; and &gt;. Thanks to Samuel Harrington for pointing this out!
llvm-svn: 200048
2014-01-24 22:55:47 +00:00
Richard Smith 0e50a883ff Update page on clang diagnostics to contrast to GCC 4.9 instead of 4.2. A lot
of the differences we identified here have been fixed by improvements in GCC.

llvm-svn: 199970
2014-01-24 03:13:34 +00:00
Aaron Ballman 13472563ad Updating the minimum version information for Visual Studio.
Patch thanks to Nikola Smiljanic!

llvm-svn: 199457
2014-01-17 03:38:49 +00:00
Richard Smith 3dd73db411 Move away from 'general' / 'generalized' as a way of identifying C++11
attribute syntax. There's nothing generalized about this; it's one of
several first-class attribute syntaxes we support, all of which are
more-or-less equally general.

As discussed on cfe-commits, we may want to revisit this if we start allowing
this syntax as an extension in C (or if C adopts the syntax), but hopefully
this diagnostic wording will be crystal clear to everyone in the mean time.

llvm-svn: 199443
2014-01-17 00:11:48 +00:00
Alp Toker 344845b43f www: update the "Follow what's going on" section too
Includes some style tweaks and removes the tautological observation that "Clang
is still under heavy development" -- it hopefully always will be.

llvm-svn: 199401
2014-01-16 17:04:52 +00:00
Alp Toker 5a1a81841a www: link to the planet clang newsfeed
Also shuffle the Communication section so the bug tracker comes first.

(The sidebar isn't scrollable at the moment so this gives a better chance of
the bug tracker being seen. The links further down are basically invisible --
we should look into that.)

llvm-svn: 199398
2014-01-16 16:29:02 +00:00
Richard Smith 75a9a1a3c2 Update feature name "Generalized Attributes" to match the heading in the paper.
llvm-svn: 199177
2014-01-14 02:52:38 +00:00
Richard Smith 8e6afd4785 Regenerate DR status page.
llvm-svn: 196893
2013-12-10 08:26:19 +00:00
Richard Smith e0cabb7756 Versions of GCC newer than 4.8 exist these days =)
llvm-svn: 196765
2013-12-09 08:55:59 +00:00
Richard Smith 6058634007 Minor cleanup and reorg of C++ status page.
llvm-svn: 196763
2013-12-09 08:52:23 +00:00
Richard Smith 99b72425f0 Update compatibility page to list some GCC language extensions that Clang does
not support as a possible reason for choosing GCC instead of Clang (and vice
versa). Weaken some of the claimed advantages of Clang in light of GCC
improvements.

llvm-svn: 196758
2013-12-09 07:03:59 +00:00
Alp Toker 05f894358a Add introductory paragraph to the C++ status page
Use internal links to provide easier access to recent and ongoing work.

Also shift up the order of standards in the page title in order to avoid web
search results focusing on C++98 in the summary.

This is done to highlight the modern standards support in clang that was
previously languishing at the bottom of the page.

  "C++98/03 is sooooo yesterday" - dgregor

llvm-svn: 196565
2013-12-06 06:35:49 +00:00
Richard Smith e7f5249913 Mark auto-generated file as auto-generated, as suggested by Alp.
llvm-svn: 196534
2013-12-05 21:08:20 +00:00
Alp Toker f6a24ce40f Fix a tranche of comment, test and doc typos
llvm-svn: 196510
2013-12-05 16:25:25 +00:00
Richard Smith 28b1939849 Update C++ status from 'SVN' to 'Clang 3.4' in preparation for release. Leave
boxes yellow until we release, though.

llvm-svn: 196482
2013-12-05 07:52:05 +00:00
Richard Smith a230224be4 Implement DR482: namespace members can be redeclared with a qualified name
within their namespace, and such a redeclaration isn't required to be a
definition any more.

Update DR status page to say Clang 3.4 instead of SVN and add new Clang 3.5
category (but keep Clang 3.4 yellow for now).

llvm-svn: 196481
2013-12-05 07:51:02 +00:00
Alp Toker d473363876 Correct hyphenations in comments and assert messages
This patch tries to avoid unrelated changes other than fixing a few
hyphen-related ambiguities in nearby lines.

llvm-svn: 196466
2013-12-05 04:47:09 +00:00
Alp Toker 3b557ba3f6 Documentation typo corrections
llvm-svn: 196215
2013-12-03 06:53:39 +00:00
Richard Smith 91e474fc91 Add support for C++'s SD6 feature test macros.
llvm-svn: 195888
2013-11-27 22:58:16 +00:00
Richard Smith ce42084402 Tests for core issues 270-300.
llvm-svn: 195626
2013-11-25 08:07:41 +00:00
Richard Smith 5327b86430 Tests for core issues 251-270.
llvm-svn: 194989
2013-11-18 05:24:03 +00:00
Richard Smith 3cde3d245a Tests for core issue 241-250.
llvm-svn: 194951
2013-11-17 06:39:43 +00:00
Richard Smith 7101fd0e56 Tests for core issues 224-240.
llvm-svn: 194946
2013-11-17 02:50:30 +00:00
Richard Smith b09a4fe192 Tests for core issue 216-223.
llvm-svn: 194795
2013-11-15 08:55:01 +00:00
Richard Smith 00f5d8927b DR408: If a static data member of incomplete array type is declared in a class
template, that member has a dependent type (even if we can see the definition
of the member of the primary template), because the array size could change in
a member specialization.

Patch by Karthik Bhat!

llvm-svn: 194740
2013-11-14 22:40:45 +00:00
Richard Smith 8c98c1e704 Tests for core issue 201-215.
llvm-svn: 194458
2013-11-12 09:16:15 +00:00
Hans Wennborg 1b6973fc99 Update macro expansion diagnostic examples to say 'expanded from:'
instead of 'instantiated from:'. The actual wording of the note was
changed in r135135.

llvm-svn: 194297
2013-11-08 23:52:29 +00:00
Richard Smith c8f7fd10a9 Tests for core issue 170-200.
llvm-svn: 194240
2013-11-08 02:05:54 +00:00
Richard Smith 786d8a26f2 Tests for CWG issue 165-170.
llvm-svn: 194215
2013-11-07 19:26:14 +00:00
Richard Smith 76b9f23f2d Mark generic lambdas, and thus C++14, as complete. Add commented-out stub for C++17.
llvm-svn: 194194
2013-11-07 06:41:26 +00:00
Richard Smith 14bdd7a925 Tests for DR150 - DR165.
llvm-svn: 194192
2013-11-07 06:24:09 +00:00
Richard Smith 677fb06cec Update cxx_dr_status.html to match current cwg issue list.
llvm-svn: 194189
2013-11-07 05:34:58 +00:00
Richard Smith 96c07b165e Remove stray comma from documentation.
llvm-svn: 194056
2013-11-05 09:12:55 +00:00
Richard Smith b47c36f8e1 C++1y sized deallocation: if we have a use, but not a definition, of a sized
deallocation function (and the corresponding unsized deallocation function has
been declared), emit a weak discardable definition of the function that
forwards to the corresponding unsized deallocation.

This allows a C++ standard library implementation to provide both a sized and
an unsized deallocation function, where the unsized one does not just call the
sized one, for instance by putting both in the same object file within an
archive.

llvm-svn: 194055
2013-11-05 09:12:18 +00:00
Richard Smith 2d1d3ca1cc Enable links now that they work.
llvm-svn: 194054
2013-11-05 08:27:00 +00:00
Richard Smith 1cdec019e8 Implement C++1y sized deallocation (n3778). This is not enabled by -std=c++1y;
instead, it's enabled by the -cc1 flag -fsized-deallocation, until we sort out
the backward-compatibility issues.

llvm-svn: 191629
2013-09-29 04:40:38 +00:00
Richard Smith ee84919175 Remove commented-out entry for ARBs, they're not in C++1y any more.
llvm-svn: 191627
2013-09-28 19:09:34 +00:00
Richard Smith b438e62aba Mark lambda init-captures as complete.
llvm-svn: 191607
2013-09-28 04:37:56 +00:00
Chandler Carruth 826eec5913 Implementation of N3760 which is planned to be voted into C++14's draft
tomorrow is complete.

There is a missing warning due to a serious issue with template
instantiation in Clang (and potentially in the core language).

llvm-svn: 191577
2013-09-27 22:30:27 +00:00
Richard Smith dca0c7a5fb Mark variable template implementation as complete. Nearly all of the credit
here goes to Larisse Voufo.

llvm-svn: 191549
2013-09-27 20:19:41 +00:00
Richard Smith 23e43cdda6 Comment out links for papers that aren't up yet.
llvm-svn: 191547
2013-09-27 19:55:03 +00:00
Benjamin Kramer 8ba47d017b Fix typo: Dellocation.
llvm-svn: 191542
2013-09-27 19:35:09 +00:00
Richard Smith 36f11c56ed Fix formatting goof.
llvm-svn: 191541
2013-09-27 19:12:22 +00:00
Richard Smith 3ca005bd01 Update status:
* generic lambdas are now partially supported
 * add papers from formal motions in committee

llvm-svn: 191540
2013-09-27 19:11:33 +00:00
Richard Smith 541b38be7b Switch the semantic DeclContext for a block-scope declaration of a function or
variable from being the function to being the enclosing namespace scope (in
C++) or the TU (in C). This allows us to fix a selection of related issues
where we would build incorrect redeclaration chains for such declarations, and
fail to notice type mismatches.

Such declarations are put into a new IdentifierNamespace, IDNS_LocalExtern,
which is only found when searching scopes, and not found when searching
DeclContexts. Such a declaration is only made visible in its DeclContext if
there are no non-LocalExtern declarations.

llvm-svn: 191064
2013-09-20 01:15:31 +00:00
Ted Kremenek 6700934ac7 Move checker downloads to llvm.org.
llvm-svn: 190316
2013-09-09 17:19:27 +00:00
Sylvestre Ledru 525e4444c4 add OCLint to the list of projects based on clang
llvm-svn: 190248
2013-09-07 07:59:01 +00:00
Sylvestre Ledru 26a4fff380 add he 'include what you use' project
llvm-svn: 190247
2013-09-07 07:56:03 +00:00
Sylvestre Ledru 215707b660 remove the description about clang & llvm in the freebsd section (the reader probably know what are llvm and clang
llvm-svn: 190246
2013-09-07 07:52:20 +00:00
Sylvestre Ledru e1f8a17a9c about the debian effort to rebuild the archive with clang
llvm-svn: 190245
2013-09-07 07:51:23 +00:00
Sylvestre Ledru 901be185d8 Clang event are now part of the llvm events. Add a link to the LLVM events
llvm-svn: 190244
2013-09-07 07:39:49 +00:00
Sylvestre Ledru a07226fff8 Update the link to the current code coverage reports (the previous one has not been updated since february 2010) + remove the spec references, not updated since May 2010
llvm-svn: 190243
2013-09-07 07:37:18 +00:00
Jordan Rose 6f937e9a21 [analyzer] Note that deadcode.UnmodifiedVariable would be an opt-in checker.
Website-only change.

llvm-svn: 188731
2013-08-19 23:54:35 +00:00
Jordan Rose 23b2f755ce [analyzer] Add "unmodified variable" checker to the Potential Checkers.
This is PR16890.

llvm-svn: 188681
2013-08-19 16:27:37 +00:00
Jordan Rose 60619a639b [analyzer] Assume that strings are no longer than SIZE_MAX/4.
This keeps the analyzer from making silly assumptions, like thinking
strlen(foo)+1 could wrap around to 0. This fixes PR16558.

Patch by Karthik Bhat!

llvm-svn: 188680
2013-08-19 16:27:34 +00:00
Jordan Rose 7964ab5a43 [analyzer] Update Open Projects and Potential Checkers pages.
- va_list checker (PR16811 and PR16812)
- Model floating-point values
- Bound bitwise masking operations (PR16615)
- Bound C string length (PR16558 and others)

llvm-svn: 188127
2013-08-10 01:24:35 +00:00