Commit Graph

13259 Commits

Author SHA1 Message Date
Ted Kremenek d94854a42e Rename 'currentX' to 'currX' throughout analyzer and libAnalysis.
Also rename 'getCurrentBlockCounter()' to 'blockCount()'.

This ripples a bunch of code simplifications; mostly aesthetic,
but makes the code a bit tighter.

llvm-svn: 162349
2012-08-22 06:26:15 +00:00
Ted Kremenek d227833cba Rename 'getConjuredSymbol*' to 'conjureSymbol*'.
No need to have the "get", the word "conjure" is a verb too!
Getting a conjured symbol is the same as conjuring one up.

This shortening is largely cosmetic, but just this simple changed
cleaned up a handful of lines, making them less verbose.

llvm-svn: 162348
2012-08-22 06:26:06 +00:00
Ted Kremenek 1afcb7442f Remove Store::bindDecl() and Store::bindDeclWithNoInit(), and
all forwarding methods.

This functionality is already covered by bindLoc().

llvm-svn: 162346
2012-08-22 06:00:18 +00:00
Ted Kremenek 2cd56c4c6e Rename 'BindCompoundLiteral' to 'bindCompoundLiteral' and
add doxygen comments.

llvm-svn: 162345
2012-08-22 06:00:12 +00:00
Ted Kremenek 086011f8c0 Remove stale header file.
llvm-svn: 162341
2012-08-22 04:42:05 +00:00
Jordan Rose e3e95cdf27 [analyzer] Set the default IPA mode to 'basic-inlining', which excludes C++.
Under -analyzer-ipa=basic-inlining, only C functions, blocks, and C++ static
member functions are inlined -- essentially, the calls that behave like simple
C function calls. This is essentially the behavior in Xcode 4.4.

C++ support still has some rough edges, and we don't want users to be worried
about them if they download and run their own checker. (In particular, the
massive number of false positives for analyzing LLVM comes from inlining
defensively-written code in contexts where more aggressive assumptions are
implicitly made. This problem is not unique to C++, but it is exacerbated by
the higher proportion of code that lives in header files in C++.)

The eventual goal is to be comfortable enough with C++ support (and simple
Objective-C support) to advance to -analyzer-ipa=inlining as the default
behavior. See the IPA design notes for more details.

llvm-svn: 162318
2012-08-21 21:44:21 +00:00
Dmitri Gribenko f6e2a4a15a Update comment to match the reality.
llvm-svn: 162316
2012-08-21 21:35:58 +00:00
Michael J. Spencer d492219e59 Reduce the amount of state in the Option class by relying on the data from OptTable::Info.
llvm-svn: 162299
2012-08-21 18:51:17 +00:00
Richard Smith a75e1cff0a Switch some realignment calculations over to llvm::RoundUpToAlignment.
llvm-svn: 162297
2012-08-21 18:18:06 +00:00
Dmitri Gribenko a93a7e8d5e Rename PrintingPolicy::DontRecurseInDeclContext to PrintingPolicy::TerseOutput
to reflect the intention, not the implementation.

llvm-svn: 162293
2012-08-21 17:36:32 +00:00
Chad Rosier db3da83b28 [driver] Add support for the --param ssp-buffer-size= driver option.
PR9673

llvm-svn: 162285
2012-08-21 16:16:06 +00:00
Richard Smith c7520bf785 Fix alignment of array of VarDecl* following array of unsigned in LambdaExpr.
llvm-svn: 162255
2012-08-21 05:42:49 +00:00
John McCall f1249929c8 When performing a trivial copy of a C++ type, we must be careful not
to overwrite objects that might have been allocated into the type's
tail padding.  This patch is missing some potential optimizations where
the destination is provably a complete object, but it's necessary for
correctness.

Patch by Jonathan Sauer.

llvm-svn: 162254
2012-08-21 04:10:00 +00:00
John McCall 3deb1ad40c Screw around with ObjCRuntime some more, changing the
diagnostics for bad deployment targets and adding a few
more predicates.  Includes a patch by Jonathan Schleifer
to enable ARC for ObjFW.

llvm-svn: 162252
2012-08-21 02:47:43 +00:00
Dmitri Gribenko 3e358ccf92 DeclPrinter: describe what 'terse' output is.
llvm-svn: 162251
2012-08-21 02:30:28 +00:00
Sam Panzer 0f38443616 Better diagnostics for range-based for loops with bad range types.
The old error message stating that 'begin' was an undeclared identifier
is replaced with a new message explaining that the error is in the range
expression, along with which of the begin() and end() functions was
problematic if relevant.

Additionally, if the range was a pointer type or defines operator*,
attempt to dereference the range, and offer a FixIt if the modified range
works.

llvm-svn: 162248
2012-08-21 00:52:01 +00:00
Dmitri Gribenko 309856ae9f DeclPrinter: add terse output mode and lots of tests
Add a flag PrintingPolicy::DontRecurseInDeclContext to provide "terse" output
from DeclPrinter.  The motivation is to use DeclPrinter to print declarations
in user-friendly format, without overwhelming user with inner detail of the
declaration being printed.

Also add many tests for DeclPrinter.  There are quite a few things that we
print incorrectly: search for WRONG in DeclPrinterTest.cpp -- and these tests
check our output against incorrect output, so that we can fix/refactor/rewrite
the DeclPrinter later.

llvm-svn: 162245
2012-08-20 23:39:06 +00:00
David Blaikie c276b25e46 Remove unused variable.
llvm-svn: 162235
2012-08-20 22:22:48 +00:00
Michael J. Spencer ad3ccc3cb0 Make Option non virtual.
llvm-svn: 162231
2012-08-20 21:41:17 +00:00
Jordan Rose 2b10f3f8a9 [analyzer] Add comments to ExplodedNode::NodeGroup.
No functionality change.

llvm-svn: 162216
2012-08-20 18:59:46 +00:00
Jordan Rose 4b4613cbec [analyzer] Replace boolean IsSink parameters with 'generateSink' methods.
Generating a sink is significantly different behavior from generating a
normal node, and a simple boolean parameter can be rather opaque. Per
offline discussion with Anna, adding new generation methods is the
clearest way to communicate intent.

No functionality change.

llvm-svn: 162215
2012-08-20 18:43:42 +00:00
Chad Rosier d4e55b8e35 [ms-inline asm] Remove old cruft now that MS-style asms their own code path.
llvm-svn: 162210
2012-08-20 17:11:53 +00:00
Dmitri Gribenko b1cfa19b5a Use correct matcher name in the comment.
llvm-svn: 162206
2012-08-20 16:48:14 +00:00
Manuel Klimek 4f3ecf1ce0 Fix comments and variable naming:
- use InnerMatcher consistently, fix style violations on the way
- doxygenify code snippets across all comments
- start doxygenifying code references in text
- addeed missing Usable as: sections

llvm-svn: 162205
2012-08-20 16:37:20 +00:00
Hans Wennborg d799a2b3b9 Better wording for reference self-initialization warning.
llvm-svn: 162198
2012-08-20 08:52:22 +00:00
Jordan Rose 8c1ac0c376 Allow -verify to be used with files that don't have an associated FileEntry.
In Debug builds, VerifyDiagnosticConsumer checks any files with diagnostics
to make sure we got the chance to parse them for directives (expected-warning
and friends). This check previously relied on every parsed file having a
FileEntry, which broke the cling interpreter's test suite.

This commit changes the extra debug checking to mark a file as unparsed
as soon as we see a diagnostic from that file. At the very end, any files
that are still marked as unparsed are checked for directives, and a fatal
error is emitted (as before) if we find out that there were directives we
missed. -verify directives should always live in actual parsed files, not
in PCH or AST files.

Patch by Andy Gibbs, with slight modifications by me.

llvm-svn: 162171
2012-08-18 16:58:52 +00:00
Benjamin Kramer a95b3ffe8f Silence a sign compare warning that only occurs on 32 bit platforms.
llvm-svn: 162168
2012-08-18 10:33:09 +00:00
Richard Smith 4f605aff7f PR41111, PR5925, PR13210: Teach tentative parsing to annotate identifiers and
nested names as id-expressions, using the annot_primary_expr annotation, where
possible. This removes some redundant lookups, and also allows us to
typo-correct within tentative parsing, and to carry on disambiguating past an
identifier which we can determine will fail lookup as both a type and as a
non-type, allowing us to disambiguate more declarations (and thus offer
improved error recovery for such cases).

This also introduces to the parser the notion of a tentatively-declared name,
which is an identifier which we *might* have seen a declaration for in a
tentative parse (but only if we end up disambiguating the tokens as a
declaration). This is necessary to correctly disambiguate cases where a
variable is used within its own initializer.

llvm-svn: 162159
2012-08-18 00:55:03 +00:00
Jordan Rose 80547386b8 [analyzer] Use PointerUnion to implement ExplodedNode::NodeGroup.
We shouldn't be reinventing our own wheels. This also paves the way for
marking different kinds of sinks.

No functionality change.

llvm-svn: 162154
2012-08-18 00:30:10 +00:00
Fariborz Jahanian f85f338634 c: privide deprecated warning when __private_extern__ storage
specifier is unsed in a declaration; as it may not make the symbol
local to linkage unit as intended. Suggest using "hidden" visibility 
attribute instead. // rdar://7703982

llvm-svn: 162138
2012-08-17 21:44:55 +00:00
Richard Smith 87deab3e6c Part of PR13618: visit the TypeLoc when RecursiveASTVisitor visits a CompoundLiteralExpr.
llvm-svn: 162133
2012-08-17 21:23:17 +00:00
Jordan Rose 9844ab8992 [analyzer] Make BlockDataRegions typed, so that they have DynamicTypeInfo.
Fixes <rdar://problem/12119814>

llvm-svn: 162123
2012-08-17 20:16:34 +00:00
Fariborz Jahanian dbd89aedd2 Remove -Wbad-function-cast from -Wall.
llvm-svn: 162117
2012-08-17 18:50:02 +00:00
Dmitri Gribenko d394c8a83e AST Matchers: introduce functionTemplate(), classTemplate() and
isExplicitTemplateSpecialization() matchers which do what their name says.

llvm-svn: 162115
2012-08-17 18:42:47 +00:00
Fariborz Jahanian 91f548b04b c: implement gcc's -Wbad-function-cast which warns
on unsafe cast of a c-function call. This is
a C-only option.

llvm-svn: 162109
2012-08-17 17:22:34 +00:00
Benjamin Kramer 0e72d5c3e5 Define __builtin_ffs[ll] with a signed argument instead of unsigned.
GCC documents these as unsigned, but defines them as signed.

llvm-svn: 162106
2012-08-17 16:39:13 +00:00
Douglas Gregor cda209a944 When we need the complete set of visible declarations from a
declaration context, check whether the primary context---not the
current context---has any external visible declarations. Fixes
PR13616.

llvm-svn: 162083
2012-08-17 05:26:33 +00:00
Richard Smith 2683b4c0fd Switch PTH format from a 7 byte magic number to an 8 byte one, to avoid
misaligned reads throughout the file. Bump PTH format version to 10.

llvm-svn: 162076
2012-08-17 03:55:43 +00:00
Richard Smith 39fc5b42a6 Fix misaligned DeclGroup allocation.
llvm-svn: 162069
2012-08-17 00:34:00 +00:00
Dmitri Gribenko e4a5a90e8d Add support for "type safety" attributes that allow checking that 'void *'
function arguments and arguments for variadic functions are of a particular
type which is determined by some other argument to the same function call.

Usecases include:
* MPI library implementations, where these attributes enable checking that
  buffer type matches the passed MPI_Datatype;
* for HDF5 library there is a similar usecase as MPI;
* checking types of variadic functions' arguments for functions like
  fcntl() and ioctl().

llvm-svn: 162067
2012-08-17 00:08:38 +00:00
Fariborz Jahanian 78f565b0a0 objective-C++: issue diagnostic when ivar type is
an abstract c++ class. // rdar://12095239

llvm-svn: 162052
2012-08-16 22:38:41 +00:00
Sam Panzer 2c4ca0fa7d Removed unused LParenLoc parameter to ActOnCXXForRangeStmt
llvm-svn: 162048
2012-08-16 21:47:25 +00:00
Fariborz Jahanian 350a17b7ce objective-C: make -Wcast-of-sel-type the default.
// rdar://12107381

llvm-svn: 162045
2012-08-16 20:16:46 +00:00
Dmitri Gribenko 2d81b34104 CommentCommandTraits: rename BeginName -> StartName for consistency.
llvm-svn: 162044
2012-08-16 20:16:11 +00:00
Fariborz Jahanian 5ad9659688 objective-C: deprecate casts of ObjC's SEL
expressions except to void, void * and their
qualified versions. // rdar://12107381

llvm-svn: 162036
2012-08-16 18:33:47 +00:00
Dmitri Gribenko 4ae66a31fe Attaching comments to declarations: parse the comment in context of the
declaration it was attached to.

llvm-svn: 162033
2012-08-16 18:19:43 +00:00
Ted Kremenek 1e60273eed Remove "range_iterator" from PathDiagnosticPiece and just use ArrayRef<SourceRange> for ranges. This
removes conceptual clutter, and can allow us to easy migrate to C++11 style for-range loops if we
ever move to using C++11 in Clang.

llvm-svn: 162029
2012-08-16 17:45:29 +00:00
Ted Kremenek 9bf9af92a4 Allow multiple PathDiagnosticConsumers to be used with a BugReporter at the same time.
This fixes several issues:

- removes egregious hack where PlistDiagnosticConsumer would forward to HTMLDiagnosticConsumer,
but diagnostics wouldn't be generated consistently in the same way if PlistDiagnosticConsumer
was used by itself.

- emitting diagnostics to the terminal (using clang's diagnostic machinery) is no longer a special
case, just another PathDiagnosticConsumer.  This also magically resolved some duplicate warnings,
as we now use PathDiagnosticConsumer's diagnostic pruning, which has scope for the entire translation
unit, not just the scope of a BugReporter (which is limited to a particular ExprEngine).

As an interesting side-effect, diagnostics emitted to the terminal also have their trailing "." stripped,
just like with diagnostics emitted to plists and HTML.  This required some tests to be updated, but now
the tests have higher fidelity with what users will see.

There are some inefficiencies in this patch.  We currently generate the report graph (from the ExplodedGraph)
once per PathDiagnosticConsumer, which is a bit wasteful, but that could be pulled up higher in the
logic stack.  There is some intended duplication, however, as we now generate different PathDiagnostics (for the same issue)
for different PathDiagnosticConsumers.  This is necessary to produce the diagnostics that a particular
consumer expects.

llvm-svn: 162028
2012-08-16 17:45:23 +00:00
Sam Panzer d624bfb5f0 Matchers related to DeclStmt for matching the count of declarations, a particular declaration within the statement, and single-Decl DeclStmts.
llvm-svn: 162027
2012-08-16 17:20:59 +00:00
Sam Panzer 80c13773e3 Matchers which correspond to CastExpr, IgnoreImpCasts, IgnoreParenCasts, and IgnoreParenImpCasts
llvm-svn: 162025
2012-08-16 16:58:10 +00:00
Richard Smith 235341bc88 Store SourceManager pointer on PrintingPolicy in the case where we're dumping,
and remove ASTContext reference (which was frequently bound to a dereferenced
null pointer) from the recursive lump of printPretty functions. In so doing,
fix (at least) one case where we intended to use the 'dump' mode, but that
failed because a null ASTContext reference had been passed in.

llvm-svn: 162011
2012-08-16 03:56:14 +00:00
Richard Smith 52f04a2e8f Don't constant-fold when pretty-printing alignment attribute. This fixes a
potential crasher -- Context is sometimes a null reference (!!) here.

llvm-svn: 162007
2012-08-16 02:43:29 +00:00
Chad Rosier 7dbef3e035 [ms-inline asm] Add inputs and outputs to AST. No functional change.
llvm-svn: 162000
2012-08-16 00:06:53 +00:00
Jordan Rose 5fc5da0578 [analyzer] Correctly devirtualize virtual method calls in constructors.
This is the other half of C++11 [class.cdtor]p4 (the destructor side
was added in r161915). This also fixes an issue with post-call checks
where the 'this' value was already being cleaned out of the state, thus
being omitted from a reconstructed CXXConstructorCall.

llvm-svn: 161981
2012-08-15 20:07:17 +00:00
Daniel Jasper faaffe373e Add ASTMatcher for matching extern "C" function declarations.
llvm-svn: 161974
2012-08-15 18:52:19 +00:00
Fariborz Jahanian 05f4e7181a Patch to warn about __private_extern__ on tentative definitions
as it does something unexpected (but gcc compatible).
Suggest use of __attribute__((visibility("hidden")))
on declaration instead. // rdar://7703982

llvm-svn: 161972
2012-08-15 18:42:26 +00:00
Chad Rosier b6f46c1af9 [ms-inline asm] Add the left brace source location and improve the pretty
printer.  Patch by Enea Zaffanella <zaffanella@cs.unipr.it>.

llvm-svn: 161958
2012-08-15 16:53:30 +00:00
Hans Wennborg 420052640f Check for improper use of 'static' and type qualifiers in array
declarators.

They are only allowed for function parameters, and then only on the
outermost array type derivation.

llvm-svn: 161934
2012-08-15 07:42:30 +00:00
Richard Smith f3bb0b2a9b Fix overallocation and underalignment of ASTTemplateArgumentListInfo objects.
llvm-svn: 161918
2012-08-15 01:22:58 +00:00
Jordan Rose 3e45307564 [analyzer] Doxygen comments in ObjCMethodCall.
No functionality change.

llvm-svn: 161917
2012-08-15 00:52:03 +00:00
Jordan Rose 0f6d63be06 [analyzer] Correctly devirtualize virtual method calls in destructors.
C++11 [class.cdtor]p4: When a virtual function is called directly or
  indirectly from a constructor or from a destructor, including during
  the construction or destruction of the class’s non-static data members,
  and the object to which the call applies is the object under
  construction or destruction, the function called is the final overrider
  in the constructor's or destructor's class and not one overriding it in
  a more-derived class.

llvm-svn: 161915
2012-08-15 00:51:56 +00:00
Chad Rosier 068e4775f8 [ms-inline asm] Mark getClobber() const.
llvm-svn: 161912
2012-08-15 00:41:20 +00:00
Chad Rosier 767a7b9ed0 [ms-inline asm] Remove the last bits of LineEnds.
llvm-svn: 161904
2012-08-14 23:14:45 +00:00
Richard Smith 1226c60593 Remove trailing return flag from FunctionTypeLoc, since we now carry that
information on FunctionProtoType. (This also fixes one of *many* misalignment
problems in the TypeLoc hierarchy...)

llvm-svn: 161901
2012-08-14 22:51:13 +00:00
Dmitri Gribenko b261088a61 Attaching comments to redeclarations: fix wrong assumptions
The reason for the recent fallout for "attaching comments to any redeclaration"
change are two false assumptions:
(1) a RawComment is attached to a single decl (not true for 'typedef struct X *Y'
    where we want the comment to be attached to both X and Y);
(2) the whole redeclaration chain has only a single comment (obviously false, the
    user can put a separate comment for each redeclaration).

To fix (1) I revert the part of the recent change where a 'Decl*' member was
introduced to RawComment.  Now ASTContext has a separate DenseMap for mapping
'Decl*' to 'FullComment*'.

To fix (2) I just removed the test with this assumption.  We might not parse
every comment in redecl chain if we already parsed at least one.

llvm-svn: 161878
2012-08-14 17:17:18 +00:00
Aaron Ballman 378b292aab Changing an enumeration to a const int to fix MSVC compiler warnings.
llvm-svn: 161877
2012-08-14 16:46:35 +00:00
Benjamin Kramer 9299d8c298 Do NOT use inline functions with LLVM_ATTRIBUTE_USED.
The function will be emitted into every single TU including the header!

llvm-svn: 161872
2012-08-14 14:50:32 +00:00
Richard Smith f995f2ce7c Fix undefined behavior: don't bind a dereferenced null pointer to a reference.
No functionality change.

llvm-svn: 161832
2012-08-14 04:19:29 +00:00
Richard Smith 697cc9e60c Fix undefined behavior in code completion, caught by
-fcatch-undefined-behavior. Don't try to fit 34 different flags
into 32 bits. Also, don't use 32-bit signed left shifts for this.

llvm-svn: 161830
2012-08-14 03:13:00 +00:00
Anna Zaks 773aa58270 [analyzer] Add getStackFrame() to CheckerContext and ExplodedNode.
llvm-svn: 161819
2012-08-14 00:36:12 +00:00
Jordan Rose ce6c99a559 [analyzer] Reduce code duplication: make CXXDestructorCall a CXXInstanceCall.
While there is now some duplication between SimpleCall and the CXXInstanceCall
sub-hierarchy, this is much better than copy-and-pasting the devirtualization
logic shared by both instance methods and destructors.

An unfortunate side effect is that there is no longer a single CallEvent type
that corresponds to "calls written as CallExprs". For the most part this is a
good thing, but the checker callback eval::Call still takes a CallExpr rather
than a CallEvent (since we're not sure if we want to allow checkers to
evaluate other kinds of calls). A mistake here will be caught by a cast<> in
CheckerManager::runCheckersForEvalCall.

No functionality change.

llvm-svn: 161809
2012-08-13 23:46:05 +00:00
Jordan Rose 07a7ed80cb [analyzer] Don't strip CXXBaseObjectRegions when checking dynamic_casts.
...and /do/ strip CXXBaseObjectRegions when casting to a virtual base class.

This allows us to enforce the invariant that a CXXBaseObjectRegion can always
provide an offset for its base region if its base region has a known class
type, by only allowing virtual bases and direct non-virtual bases to form
CXXBaseObjectRegions.

This does mean some slight problems for our modeling of dynamic_cast, which
needs to be resolved by finding a path from the current region to the class
we're trying to cast to.

llvm-svn: 161797
2012-08-13 22:11:34 +00:00
Richard Smith ef8bf4368e Factor out computation of whether a typeid's expression is potentially
evaluated into a CXXTypeid member function. No functionality change.

llvm-svn: 161779
2012-08-13 20:08:14 +00:00
Dmitri Gribenko a43ec186a4 Attaching comments to declarations: find comment attached to any redeclaration
Not only look for the comment near the declaration itself, but also walk the
redeclaration chain: the previous declaration might have had a documentation
comment.

llvm-svn: 161722
2012-08-11 00:51:43 +00:00
Jordan Rose a423e4c022 [analyzer] Remove unused StoreManager::CastResult class.
No functionality change.

llvm-svn: 161715
2012-08-10 22:43:32 +00:00
Fariborz Jahanian 5e74a1af6f Removed an unused function I added a while back.
llvm-svn: 161714
2012-08-10 22:28:13 +00:00
Chad Rosier baf53f9ff8 [ms-inline asm] Avoid extra allocations by making this an array of StringRefs.
llvm-svn: 161703
2012-08-10 21:36:25 +00:00
Chad Rosier d6ef704fe4 [ms-inline asm] Fix a memory leak introduced in r161686.
llvm-svn: 161698
2012-08-10 21:06:19 +00:00
Chad Rosier a7020aee00 [ms-inline asm] Add clobbers to AST representation.
llvm-svn: 161686
2012-08-10 19:13:14 +00:00
Anna Zaks 75f49a9c07 [analyzer] Track if a region can be a subclass in the dynamic type info.
When object is allocated with alloc or init, we assume it cannot be a
subclass (currently used only for bifurcation purposes).

llvm-svn: 161682
2012-08-10 18:55:58 +00:00
Anna Zaks 920af014c1 [analyzer] Optimize dynamic dispatch bifurcation by detecting the cases
when we don't need to split.

In some cases we know that a method cannot have a different
implementation in a subclass:
 - the class is declared in the main file (private)
 - all the method declarations (including the ones coming from super
classes) are in the main file.

This can be improved further, but might be enough for the heuristic.
(When we are too aggressive splitting the state, efficiency suffers.
When we fail to split the state coverage might suffer.)

llvm-svn: 161681
2012-08-10 18:55:53 +00:00
John McCall a0a9689550 Check access to friend declarations. There's a number of different
things going on here that were problematic:
  - We were missing the actual access check, or rather, it was suppressed
    on account of being a redeclaration lookup.
  - The access check would naturally happen during delay, which isn't
    appropriate in this case.
  - We weren't actually emitting dependent diagnostics associated with
    class templates, which was unfortunate.
  - Access was being propagated incorrectly for friend method declarations
    that couldn't be matched at parse-time.

llvm-svn: 161652
2012-08-10 03:15:35 +00:00
Jordan Rose b00073db80 Update VerifyDiagnosticConsumer to only get directives during parsing.
The old behavior was to re-scan any files (like modules) where we may have
directives but won't actually be parsing during the -verify invocation.
Now, we keep the old behavior in Debug builds as a sanity check (though
modules are a known entity), and expect all legitimate directives to come
from comments seen by the preprocessor.

This also affects the ARC migration tool, which captures diagnostics in
order to filter some out. This change adds an explicit cleanup to
CaptureDiagnosticsConsumer in order to let its sub-consumer handle the
real end of diagnostics.

This was originally split into four patches, but the tests do not run
cleanly without all four, so I've combined them into one commit.

Patches by Andy Gibbs, with slight modifications from me.

llvm-svn: 161650
2012-08-10 01:06:16 +00:00
David Blaikie f5697e5222 Provide isConst/Volatile on CXXMethodDecl.
This also provides isConst/Volatile/Restrict on FunctionTypes to coalesce
the implementation with other callers (& update those other callers).

Patch contributed by Sam Panzer (panzer@google.com).

llvm-svn: 161647
2012-08-10 00:55:35 +00:00
Jordan Rose c91e01bc11 [analyzer] Cache the "concrete offset base" for regions with symbolic offsets.
This makes it faster to access and invalidate bindings with symbolic offsets
by only computing this information once.

No intended functionality change.

llvm-svn: 161635
2012-08-09 22:55:37 +00:00
Jordan Rose b7596f6015 [analyzer] Devirtualize StoreManager::evalDerivedToBase(SVal, CastExpr)
This was triggering -Woverloaded-virtual, but there's really no reason for
the cast version to be virtual anyway. It just calls through to the QualType
entry point.

llvm-svn: 161631
2012-08-09 22:48:16 +00:00
Jordan Rose 996d309fb7 [analyzer] A CXXBaseObjectRegion should correspond to a DIRECT base.
An ASTContext's RecordLayoutInfo can only be used to look up offsets of
direct base classes, and we need the offset to make non-symbolic bindings
in RegionStore. This change makes sure that we have one layer of
CXXBaseObjectRegion for each base we are casting through.

This was causing crashes on an internal buildbot.

llvm-svn: 161621
2012-08-09 21:24:02 +00:00
Chad Rosier 8640a2a0db [ms-inline asm] Use StringRef here, per Jordan's suggestion.
llvm-svn: 161619
2012-08-09 21:06:32 +00:00
Anna Zaks a0105b2320 [analyzer] Rename the function to better reflect what it actually does.
llvm-svn: 161617
2012-08-09 21:02:45 +00:00
Anna Zaks 85383182ec [analyzer] Improve readability of the dyn. dispatch bifurcation patch
r161552.

As per Jordan's feedback.

llvm-svn: 161603
2012-08-09 18:43:00 +00:00
Dmitri Gribenko ba7aca3b38 Comment to HTML and XML conversion: ignore commands that contain a declaration
as their argument.  For example, \fn, \function, \typedef, \method, \class etc.

llvm-svn: 161601
2012-08-09 18:20:29 +00:00
Dmitri Gribenko dcbc8ce2b5 Comment to HTML and XML conversion: use CommandTraits to classify commands.
This also fixes a bug in comment to XML conversion: \result was just an
ordinary paragraph, not an alias for \returns.

llvm-svn: 161596
2012-08-09 17:33:20 +00:00
Anna Zaks bc6d0ccf92 Unbreak the build.
Declaring "const Decl *Decl" is not a good idea.

llvm-svn: 161567
2012-08-09 02:57:02 +00:00
Anna Zaks 123af098b8 [analyzer] Bifurcate the path with dynamic dispatch.
This is an initial (unoptimized) version. We split the path when
inlining ObjC instance methods. On one branch we always assume that the
type information for the given memory region is precise. On the other we
assume that we don't have the exact type info. It is important to check
since the class could be subclassed and the method can be overridden. If
we always inline we can loose coverage.

Had to refactor some of the call eval functions.

llvm-svn: 161552
2012-08-09 00:21:33 +00:00
Dmitri Gribenko ca7f80ada0 Comment parsing: extract TableGen'able pieces into new CommandTraits class.
llvm-svn: 161548
2012-08-09 00:03:17 +00:00
Eli Friedman 934dbbfa11 Minor simplification for r161534.
llvm-svn: 161544
2012-08-08 23:53:27 +00:00
Fariborz Jahanian 18d0a5d509 objective-C: refactor/simplify parsing of delayed
method/c-funcs defined in objc class implementation.
No intended functionality change.

llvm-svn: 161540
2012-08-08 23:41:08 +00:00
Richard Smith ac4e36d1af PR13558: Fix typo 'compatiblity'. Thinking of the children. Apparently.
llvm-svn: 161537
2012-08-08 23:32:13 +00:00
Eli Friedman 89b1f2c7e1 Handle deprecation diagnostics correctly for C struct fields and Objective-C properties/ivars. <rdar://problem/6642337>.
llvm-svn: 161534
2012-08-08 23:04:35 +00:00
Anna Zaks 13b0857ad0 Address code review comments for Wstrncat-size warning (r161440).
llvm-svn: 161527
2012-08-08 21:42:23 +00:00
Chad Rosier 3ed0bd9938 [ms-inline asm] Refactor the logic to generate the AsmString into Sema. No
functional change intended.

llvm-svn: 161518
2012-08-08 19:48:07 +00:00
Chad Rosier 55a2d9397c Whitespace.
llvm-svn: 161517
2012-08-08 18:51:50 +00:00
Jordan Rose d86b3bdb7a [analyzer] Clean up the printing of FieldRegions for leaks.
Unfortunately, generalized region printing is very difficult:
- ElementRegions are used both for casting and as actual elements.
- Accessing values through a pointer means going through an intermediate
  SymbolRegionValue; symbolic regions are untyped.
- Referring to implicitly-defined variables like 'this' and 'self' could be
  very confusing if they come from another stack frame.

We fall back to simply not printing the region name if we can't be sure it
will print well. This will allow us to improve in the future.

llvm-svn: 161512
2012-08-08 18:23:36 +00:00
Jordan Rose 3a80cec5e9 [analyzer] Revamp RegionStore to distinguish regions with symbolic offsets.
RegionStore currently uses a (Region, Offset) pair to describe the locations
of memory bindings. However, this representation breaks down when we have
regions like 'array[index]', where 'index' is unknown. We used to store this
as (SubRegion, 0); now we mark them specially as (SubRegion, SYMBOLIC).

Furthermore, ProgramState::scanReachableSymbols depended on the existence of
a sub-region map, but RegionStore's implementation doesn't provide for such
a thing. Moving the store-traversing logic of scanReachableSymbols into the
StoreManager allows us to eliminate the notion of SubRegionMap altogether.

This fixes some particularly awkward broken test cases, now in
array-struct-region.c.

llvm-svn: 161510
2012-08-08 18:23:27 +00:00
Jordan Rose 55edf5ff14 Constify CXXRecordDecl::isVirtuallyDerivedFrom.
No functionality change. A couple ugly const_casts because the ancestor
search code is used for other purposes as well.

llvm-svn: 161509
2012-08-08 18:23:20 +00:00
Chad Rosier d2ff32aa94 Add the IsSimple/IsVolatile parameters to the MSAsmStmt constructor.
llvm-svn: 161503
2012-08-08 17:35:36 +00:00
David Blaikie 1c7c8f7637 Implement warning for integral null pointer constants other than the literal 0.
This is effectively a warning for code that violates core issue 903 & thus will
become standard error in the future, hopefully. It catches strange null
pointers such as: '\0', 1 - 1, const int null = 0; etc...

There's currently a flaw in this warning (& the warning for 'false' as a null
pointer literal as well) where it doesn't trigger on comparisons (ptr == '\0'
for example). Fix to come in a future patch.

Also, due to this only being a warning, not an error, it triggers quite
frequently on gtest code which tests expressions for null-pointer-ness in a
SFINAE context (so it wouldn't be a problem if this was an error as in an
actual implementation of core issue 903). To workaround this for now, the
diagnostic does not fire in unevaluated contexts.

Review by Sean Silva and Richard Smith.

llvm-svn: 161501
2012-08-08 17:33:31 +00:00
Richard Smith f2b084fc5a Implement final piece of DR963 and also DR587:
A conditional operator between glvalues of types cv1 T and cv2 T produces a
glvalue if the expressions are of the same value kind and one of cv1 and cv2
is a subset of the other.

A conditional operator between two null pointer constants is permitted if one
of them is of type std::nullptr_t.

llvm-svn: 161476
2012-08-08 06:13:49 +00:00
Dmitri Gribenko 25db8721e9 Remove obsolete comment. Obsoleted by r116524 when Type hierarhy bitfield
implementation was changed to a union of bitfields.

llvm-svn: 161447
2012-08-07 21:19:46 +00:00
Dmitri Gribenko 168d23414a Comment AST: DeclInfo: add a special kind for enums.
Comment XML: add a root node kind for enums.

llvm-svn: 161442
2012-08-07 18:59:04 +00:00
Anna Zaks f0267f5c9e Turn on strncat-size warning implemented a while ago.
Warns on anti-patterns/typos in the 'size' argument to strncat. The
correct size argument should look like the following:
 - strncat(dst, src, sizeof(dst) - strlen(dest) - 1);

We warn on: 
 - sizeof(dst)
 - sizeof(src)
 - sizeof(dst) - strlen(dst)
 - sizeof(src) - anything

(This has been implemented in void Sema::CheckStrncatArguments().)

llvm-svn: 161440
2012-08-07 18:36:58 +00:00
Dmitri Gribenko a4eeae7930 Comment.h: fix typo in comment
llvm-svn: 161436
2012-08-07 18:20:04 +00:00
Dmitri Gribenko 94ef6357ca Comment AST: treat enumerators as "variables" in DeclInfo.
llvm-svn: 161435
2012-08-07 18:12:22 +00:00
Dmitri Gribenko 740c0fbe0e libclang API for comment-to-xml conversion.
The implementation also includes a Relax NG schema and tests for the schema
itself.  The schema is used in c-index-test to verify that XML documents we
produce are valid.  In order to do the validation, we add an optional libxml2
dependency for c-index-test.

Credits for CMake part go to Doug Gregor.  Credits for Autoconf part go to Eric
Christopher.  Thanks!

llvm-svn: 161431
2012-08-07 17:54:38 +00:00
Hans Wennborg b1ab2a84f0 Remove ScanfArgType and bake that logic into ArgType.
This is useful for example for %n in printf, which expects
a pointer to int with the same logic for checking as %d
would have in scanf.

llvm-svn: 161407
2012-08-07 08:59:46 +00:00
Hans Wennborg c3b3da0bb2 Rename analyze_format_string::ArgTypeResult to ArgType
Also remove redundant constructors and unused member functions.

llvm-svn: 161403
2012-08-07 08:11:26 +00:00
Richard Smith a33e4fe603 Update documentation of HasSideEffects to match its callers' expectations, and
update implementation to match. An elidable, non-trivial constructor call is a
side-effect under this definition, but wasn't under the old one, because we are
not required to evaluate it even though it may have an effect.

Also rationalize checking for volatile reads: just look for lvalue-to-rvalue
conversions on volatile glvalues, and ignore whether a DeclRefExpr etc is for
a volatile variable.

llvm-svn: 161393
2012-08-07 05:18:29 +00:00
Ted Kremenek 724923945b Enhance ClangDiagnosticsEmitter to reject diagnostics that are errors that are also
included in warning groups.  Warning groups can only contain warnings, because only
warnings can be mapped to errors or ignored.

This caught a few diagnostics that were incorrectly in diagnostic groups, and
could have resulted in a compiler crash when those diagnostic groups were mapped.

Fixes <rdar://problem/12044436>

llvm-svn: 161389
2012-08-07 05:01:49 +00:00
Ted Kremenek e7df6f952e Remove two fall through diagnostics from the IgnoredAttributes group, since they are errors, not warnings.
Only warnings should be in warning groups.  This was causing an assertion failure in
code using pragmas to map -Wignored-attributes to ignored, but this kind of
diagnostic mapping is disallowed for builtin errors.  We should just wire
up tablegen to reject errors being in diagnostic groups.

llvm-svn: 161376
2012-08-07 00:34:48 +00:00
Chad Rosier 99fc38191b [ms-inline asm] Stmt destructors are never called, so allocate the AsmToks using
the ASTContext BumpPtr.  Also use the preferred llvm::ArrayRef interface.

llvm-svn: 161373
2012-08-07 00:29:06 +00:00
Fariborz Jahanian 14f1aa70a9 objective-c: Implement gcc's -Wdirect-ivar-access option.
// rdar://6505197

llvm-svn: 161362
2012-08-06 23:50:51 +00:00
Anna Zaks 472dbcf156 [analyzer] Add a checker to manage dynamic type propagation.
Instead of sprinkling dynamic type info propagation throughout
ExprEngine, the added checker would add the more precise type
information on known APIs (Ex: ObjC alloc, new) and propagate
the type info in other cases (ex: ObjC init method, casts (the second is
not implemented yet)).

Add handling of ObjC alloc, new and init to the checker.

llvm-svn: 161357
2012-08-06 23:25:39 +00:00
David Blaikie 131fcb4a06 Refactor checks for unevaluated contexts into a common utility function.
The one caller that's surrounded by nearby code manipulating the underlying
evaluation context list is left unmodified for readability.

Review by Sean Silva and Richard Smith.

llvm-svn: 161355
2012-08-06 22:47:24 +00:00
Dmitri Gribenko 8e5d5f1feb Comment AST: DeclInfo: collapse a bunch of boolean flags into an enum.
llvm-svn: 161352
2012-08-06 21:31:15 +00:00
Chad Rosier c6c7133ed6 [ms-inline asm] Pass Tokens to Sema and store them in the AST. No functional
change intended.  No test case as there's no real way to test at this time.

llvm-svn: 161342
2012-08-06 20:03:45 +00:00
Simon Atanasyan a1f8c0ab93 Fix MIPS DSP Rev1 intrinsics memory properties.
The patch reviewed by Akira Hatanaka.

llvm-svn: 161333
2012-08-06 19:48:16 +00:00
Dmitri Gribenko a9770ad820 Comment parser and sema: remove useless return values
llvm-svn: 161331
2012-08-06 19:03:12 +00:00
Dmitri Gribenko 5ec0c7536a Comment diagnostics: warn on duplicate \brief and \return commands.
Doxygen manual claims that multiple \brief or \returns commands will be merged
together, but actual behavior is different (second \brief command becomes a
part of a discussion, second \returns becomes a "Returns: blah" paragraph on
its own).  Anyway, it seems to be a bad idea to use multiple \brief or \returns
commands in a single command.

llvm-svn: 161325
2012-08-06 17:08:27 +00:00
Dmitri Gribenko 558babc53b Comment diagnostics: \return in void function: specialize diagnostic text for
ObjC methods.

llvm-svn: 161324
2012-08-06 16:29:26 +00:00
Craig Topper ef3f5fe6bd Re-enable pcmpistri/pcmpestri builtins in clang now that llvm supports them properly.
llvm-svn: 161319
2012-08-06 07:07:06 +00:00
Richard Smith 403f76ee02 PR13529: Don't crash if the driver sees an unused input file when running as
'clang-cpp'.

For now, the test uses "REQUIRES: shell" to determine if the host system
supports "ln -s", which it uses to create a 'clang-cpp' symlink. This is a bit
hacky and should likely be directly supported by lit.cfg.

llvm-svn: 161317
2012-08-06 04:09:06 +00:00
Richard Smith 18f07db183 PR13499: Don't try to check whether 'override' has been validly applied until
we know whether the function is virtual. But check it as soon as we do know;
in some cases we don't need to wait for an instantiation.

llvm-svn: 161316
2012-08-06 03:25:17 +00:00
Hal Finkel 3fadbb54fd Add __builtin_readcyclecounter() to produce the @llvm.readcyclecounter() intrinsic.
llvm-svn: 161310
2012-08-05 22:03:08 +00:00
Jordan Rose cfb4eb293f [analyzer] When a symbol is null, we should track its constraints.
Because of this, we would previously emit NO path notes when a parameter
is constrained to null (because there are no stores). Now we show where we
made the assumption, which is much more useful.

llvm-svn: 161280
2012-08-03 23:09:01 +00:00
Jordan Rose 3eb3cd45b8 [analyzer] Flatten path diagnostics for text output like we do for HTML.
llvm-svn: 161279
2012-08-03 23:08:54 +00:00
Jordan Rose 92e1449b55 [analyzer] Track null/uninitialized C++ objects used in method calls.
llvm-svn: 161278
2012-08-03 23:08:49 +00:00
Anna Zaks 150843b87e [analyzer] ObjC Inlining: Start tracking dynamic type info in the GDM
In the following code, find the type of the symbolic receiver by
following it and updating the dynamic type info in the state when we
cast the symbol from id to MyClass *.

  MyClass *a = [[self alloc] init];
  return 5/[a testSelf];

llvm-svn: 161264
2012-08-03 21:43:37 +00:00
Dmitri Gribenko 6430583017 Comment diagnostics: warn if \returns is used in a non-function comment or if
the function returns void.

llvm-svn: 161261
2012-08-03 21:15:32 +00:00
Dmitri Gribenko 37a7fafd44 Comments AST: refactor DeclInfo to use an enum for decl kind instead of
separate flags.

llvm-svn: 161217
2012-08-02 21:45:39 +00:00
Dmitri Gribenko 676fd04e9c ASTContext.h: replace include by a forward declaration.
llvm-svn: 161186
2012-08-02 17:39:44 +00:00
Dmitri Gribenko 58e4131995 Comment to HTML conversion: correct typo in CSS class name: taram -> tparam
llvm-svn: 161145
2012-08-01 23:47:30 +00:00
Dmitri Gribenko 527ab21112 Comment AST: add DeclInfo to store information about the declaration. Sema was
already extracting most of this, but discarding at the end of semantic analysis.

llvm-svn: 161140
2012-08-01 23:08:09 +00:00
Eli Friedman 22be06a250 Fix an assertion failure instantiating a constexpr function from within a -dealloc method. PR13401.
llvm-svn: 161135
2012-08-01 21:02:59 +00:00
Dmitri Gribenko 34df220410 Comment parsing: add support for \tparam command on all levels.
The only caveat is renumbering CXCommentKind enum for aesthetic reasons -- this
breaks libclang binary compatibility, but should not be a problem since API is
so new.

This also fixes PR13372 as a side-effect.

llvm-svn: 161087
2012-07-31 22:37:06 +00:00
Jordan Rose a765bac7a1 [analyzer] Turn -cfg-add-initializers on by default, and remove the flag.
llvm-svn: 161060
2012-07-31 18:04:59 +00:00
Manuel Klimek 3aad855a89 Fixes a segfault in Tooling when using pch's:
Clear the FileManager's stat cache in between running
translation units, as the stat cache loaded from a pch
is only valid for one compiler invocation.

llvm-svn: 161047
2012-07-31 13:56:54 +00:00
Benjamin Kramer 1bbcbd0187 Remove deprecated getNameAsCString methods.
llvm-svn: 161044
2012-07-31 11:45:39 +00:00
Alexander Kornienko 4de035947b Added -ast-list option to dump filterable AST decl node names.
llvm-svn: 161040
2012-07-31 09:37:40 +00:00
Manuel Klimek 4b7740a9fe Document the result type of the matcher functions where
it's not obvious from the source code.

llvm-svn: 161035
2012-07-31 06:28:58 +00:00
John McCall f253834456 Introduce new queries on ObjCRuntime for how to interpret subscripts
on object pointers and whether pointer arithmetic on object pointers
is supported.  Make ObjFW interpret subscripts as pseudo-objects.
Based on a patch by Jonathan Schleifer.

llvm-svn: 161028
2012-07-31 05:14:30 +00:00
Jordan Rose 42e8d6497d [analyzer] Let CallEvent decide what goes in an inital stack frame.
This removes explicit checks for 'this' and 'self' from
Store::enterStackFrame. It also removes getCXXThisRegion() as a virtual
method on all CallEvents; it's now only implemented in the parts of the
hierarchy where it is relevant. Finally, it removes the option to ask
for the ParmVarDecls attached to the definition of an inlined function,
saving a recomputation of the result of getRuntimeDefinition().

No visible functionality change!

llvm-svn: 161017
2012-07-31 01:07:55 +00:00
Jordan Rose c2d249ce2c [analyzer] Perform post-call checks for all inlined calls.
Previously, we were only checking the origin expressions of inlined calls.
Checkers using the generic postCall and older postObjCMessage callbacks were
ignored. Now that we have CallEventManager, it is much easier to create
a CallEvent generically when exiting an inlined function, which we can then
use for post-call checks.

No test case because we don't (yet) have any checkers that depend on this
behavior (which is why it hadn't been fixed before now).

llvm-svn: 161005
2012-07-30 23:39:47 +00:00
Richard Smith 943c440455 Improvements to vexing-parse warnings. Make the no-parameters case more
accurate by asking the parser whether there was an ambiguity rather than trying
to reverse-engineer it from the DeclSpec. Make the with-parameters case have
better diagnostics by using semantic information to drive the warning,
improving the diagnostics and adding a fixit.

Patch by Nikola Smiljanic. Some minor changes by me to suppress diagnostics for
declarations of the form 'T (*x)(...)', which seem to have a very high false
positive rate, and to reduce indentation in 'warnAboutAmbiguousFunction'.

llvm-svn: 160998
2012-07-30 21:30:52 +00:00
Fariborz Jahanian b7f03c191c objective-c arc: ARC IRGen correctly assumes result
type of generated call to super dealloc is 'void'
and asserts if user's dealloc is not of 'void type.
This rule must be enforced in clang front-end (with a 
fixit) if this is not the case, instead of asserting in CodeGen.
// rdar://11987838

llvm-svn: 160993
2012-07-30 20:52:48 +00:00
Anna Zaks 63282aefb9 [analyzer] Very simple ObjC instance method inlining
- Retrieves the type of the object/receiver from the state.
- Binds self during stack setup.
- Only explores the path on which the method is inlined (no
bifurcation to explore the path on which the method is not inlined).

llvm-svn: 160991
2012-07-30 20:31:29 +00:00
Anna Zaks b7c2d15065 [analyzer] fixup for adding of the "dynamic" ipa option
llvm-svn: 160990
2012-07-30 20:31:24 +00:00
Anna Zaks 7044adcaa4 Mark ObjCInterfaceDecl::lookupPrivateMethod as const.
llvm-svn: 160989
2012-07-30 20:31:21 +00:00
Anna Zaks e49190984c [analyzer] Add -analyzer-ipa=dynamic option for inlining dynamically
dispatched methods.

Disabled by default for now.

llvm-svn: 160988
2012-07-30 20:31:18 +00:00
Jordan Rose fcd016e57e [analyzer] Only allow CallEvents to be created by CallEventManager.
This ensures that it is valid to reference-count any CallEvents, and we
won't accidentally try to reclaim a CallEvent that lives on the stack.
It also hides an ugly switch statement for handling CallExprs!

There should be no functionality change here.

llvm-svn: 160986
2012-07-30 20:22:09 +00:00
Jordan Rose 01c0a2768f [analyzer] Remove declaration of refactored evalObjCMessage method.
No functionality change.

llvm-svn: 160985
2012-07-30 20:22:03 +00:00
Matt Beaumont-Gay 5c8de784f6 Do not warn on correct use of the '%n' format specifier.
While '%n' can be used for evil in an attacker-controlled format string, there
isn't any acute danger in using it in a literal format string with an argument
of the appropriate type.

llvm-svn: 160984
2012-07-30 20:21:58 +00:00
Jordan Rose d457ca92ce [analyzer] Introduce a CallEventManager to keep a pool of CallEvents.
This allows us to get around the C++ "virtual constructor" problem
when we'd like to create a CallEvent from an ExplodedNode, an inlined
StackFrameContext, or another CallEvent. The solution has three parts:

- CallEventManager uses a BumpPtrAllocator to allocate CallEvent-sized
  memory blocks. It also keeps a cache of freed CallEvents for reuse.
- CallEvents all have protected copy constructors, along with cloneTo()
  methods that use placement new to copy into CallEventManager-managed
  memory, vtables intact.
- CallEvents owned by CallEventManager are now wrapped in an
  IntrusiveRefCntPtr. Going forwards, it's probably a good idea to create
  ALL CallEvents through the CallEventManager, so that we don't accidentally
  try to reclaim a stack-allocated CallEvent.

All of this machinery is currently unused but will be put into use shortly.

llvm-svn: 160983
2012-07-30 20:21:55 +00:00
Dmitri Gribenko a260c030b8 Add an assert to ParamCommandComment::getParamIndex() -- it should not be
called unless index is valid.

llvm-svn: 160970
2012-07-30 17:38:19 +00:00
Benjamin Kramer e0d6e8427a Microoptimize isOffsetInFileID a bit.
llvm-svn: 160928
2012-07-29 11:12:46 +00:00
Dmitri Gribenko 4586df765e Implement resolving of HTML character references (named: &amp;, decimal: &#42;,
hex: &#x1a;) during comment parsing.

Now internal representation of plain text in comment AST does not contain
character references, but the characters themselves.

llvm-svn: 160891
2012-07-27 20:37:06 +00:00
Dmitri Gribenko ce675c52ba Add a function to convert a single Unicode code point to a UTF8 sequence.
llvm-svn: 160890
2012-07-27 20:36:22 +00:00
Hans Wennborg 08574d3559 Make -Wformat walk the typedef chain when looking for size_t, etc.
Clang's -Wformat fix-its currently suggest using "%zu" for values of
type size_t (in C99 or C++11 mode). However, for a type such as
std::vector<T>::size_type, it does not notice that type is actually
typedeffed to size_t, and instead suggests a format for the underlying
type, such as "%lu" or "%u".

This commit makes the format string fix mechanism walk the typedef chain
so that it notices if the type is size_t, even if that isn't "at the
top".

llvm-svn: 160886
2012-07-27 19:17:46 +00:00
Anna Zaks c77a3b1aab Consolidate ObjC lookupPrivateMethod methods from Sema and DeclObjC.
Also, fix a subtle bug, which occurred due to lookupPrivateMethod
defined in DeclObjC.h not looking up the method inside parent's
categories.

Note, the code assumes that Class's parent object has the same methods
as what's in the Root class of a the hierarchy, which is a heuristic
that might not hold for hierarchies which do not descend from NSObject.
Would be great to fix this in the future.

llvm-svn: 160885
2012-07-27 19:07:44 +00:00
Anna Zaks 15b13a9f0c [analyzer] Address Jordan's and Fariborz's review of r160768.
llvm-svn: 160883
2012-07-27 19:07:32 +00:00
Richard Smith d3b5c90865 Final piece of core issue 1330: delay computing the exception specification of
a defaulted special member function until the exception specification is needed
(using the same criteria used for the delayed instantiation of exception
specifications for function temploids).

EST_Delayed is now EST_Unevaluated (using 1330's terminology), and, like
EST_Uninstantiated, carries a pointer to the FunctionDecl which will be used to
resolve the exception specification.

This is enabled for all C++ modes: it's a little faster in the case where the
exception specification isn't used, allows our C++11-in-C++98 extensions to
work, and is still correct for C++98, since in that mode the computation of the
exception specification can't fail.

The diagnostics here aren't great (in particular, we should include implicit
evaluation of exception specifications for defaulted special members in the
template instantiation backtraces), but they're not much worse than before.

Our approach to the problem of cycles between in-class initializers and the
exception specification for a defaulted default constructor is modified a
little by this change -- we now reject any odr-use of a defaulted default
constructor if that constructor uses an in-class initializer and the use is in
an in-class initialzer which is declared lexically earlier. This is a closer
approximation to the current draft solution in core issue 1351, but isn't an
exact match (but the current draft wording isn't reasonable, so that's to be
expected).

llvm-svn: 160847
2012-07-27 04:22:15 +00:00
Jordan Rose 72ce8e2d42 [analyzer] CallEvent is no longer a value object.
After discussion, the type-based dispatch was decided to be bad for
maintenance and made it very easy for subtle bugs to creep in. Instead,
we'll just be very careful when we do have to allocate these on the heap.

llvm-svn: 160817
2012-07-26 21:41:15 +00:00
Jordan Rose 4f7df9be69 [analyzer] Rename Calls.{h,cpp} to CallEvent.{h,cpp}. No functionality change.
llvm-svn: 160815
2012-07-26 21:39:41 +00:00
Jordan Rose 54529a347e [analyzer] Handle C++ member initializers and destructors.
This uses CFG to tell if a constructor call is for a member, and uses
the member's region appropriately.

llvm-svn: 160808
2012-07-26 20:04:21 +00:00
Jordan Rose b970505d0d [analyzer] Handle base class initializers and destructors.
Most of the logic here is fairly simple; the interesting thing is that
we now distinguish complete constructors from base or delegate constructors.
We also make sure to cast to the base class before evaluating a constructor
or destructor, since non-virtual base classes may behave differently.

This includes some refactoring of VisitCXXConstructExpr and VisitCXXDestructor
in order to keep ExprEngine.cpp as clean as possible (leaving the details for
ExprEngineCXX.cpp).

llvm-svn: 160806
2012-07-26 20:04:13 +00:00
Jordan Rose a4c0d21f42 [analyzer] Show paths for destructor calls.
This modifies BugReporter and friends to handle CallEnter and CallExitEnd
program points that came from implicit call CFG nodes (read: destructors).

This required some extra handling for nested implicit calls. For example,
the added multiple-inheritance test case has a call graph that looks like this:

testMultipleInheritance3
  ~MultipleInheritance
    ~SmartPointer
    ~Subclass
      ~SmartPointer
        ***bug here***

In this case we correctly notice that we started in an inlined function
when we reach the CallEnter program point for the second ~SmartPointer.
However, when we reach the next CallEnter (for ~Subclass), we were
accidentally re-using the inner ~SmartPointer call in the diagnostics.

Rather than guess if we saw the corresponding CallExitEnd based on the
contents of the active path, we now just ask the PathDiagnostic if there's
any known stack before popping off the top path.

(A similar issue could have occured without multiple inheritance, but there
wasn't a test case for it.)

llvm-svn: 160804
2012-07-26 20:04:05 +00:00
Jordan Rose 77c28aaa5c Add a const version of Expr::IgnoreImplicit. No functionality change.
llvm-svn: 160801
2012-07-26 20:03:54 +00:00
Alexander Kornienko 49b5f89105 Put back dump() without a default argument, "because debuggers don't usually respect default arguments".
llvm-svn: 160788
2012-07-26 17:11:45 +00:00
Alexander Kornienko 3db68ee109 Added -ast-dump-filter option to clang -cc1.
llvm-svn: 160784
2012-07-26 16:01:23 +00:00
Anna Zaks 83f1495fcb [analyzer] Inline ObjC class methods.
- Some cleanup(the TODOs) will be done after ObjC method inlining is
complete.
- Simplified CallEvent::getDefinition not to require ISDynamicDispatch
parameter.
- Also addressed Jordan's comments from r160530.

llvm-svn: 160768
2012-07-26 00:27:51 +00:00
Ted Kremenek 80b4ac76c5 Remove the ability to stash arbitrary pointers into UndefinedVal (no longer needed).
llvm-svn: 160764
2012-07-25 22:09:19 +00:00
Ted Kremenek b5a18d5881 Remove ExprEngine::MarkBranch(), as it is no longer needed.
llvm-svn: 160761
2012-07-25 21:58:29 +00:00
Manuel Klimek e923569b1b Introduces the 'decl' matcher which was missing for a while
and became necessary with the change to require BindableMatchers
for binding.

Also fixes PR 13445: "hasSourceExpression only works for implicit casts".

llvm-svn: 160716
2012-07-25 10:02:02 +00:00
Ted Kremenek 875a402dc3 Turn -Wobjc-root-class on by default. <rdar://problem/11203649>.
llvm-svn: 160707
2012-07-25 07:26:32 +00:00
Ted Kremenek 2b619662ee Promote warn_unknown_analyzer_checker to an error. Addresses <rdar://problem/10987863>.
llvm-svn: 160706
2012-07-25 07:12:13 +00:00
Richard Smith 2589b9808e PR12057: Allow variadic template pack expansions to cross lambda boundaries.
Rather than adding a ContainsUnexpandedParameterPack bit to essentially every
AST node, we tunnel the bit directly up to the surrounding lambda expression
when we reach a context where an unexpanded pack can not normally appear.
Thus any statement or declaration within a lambda can now potentially contain
an unexpanded parameter pack.

llvm-svn: 160705
2012-07-25 03:56:55 +00:00
Dmitri Gribenko e6af54af9b Make comments::Parser and comments::Sema noncopyable.
llvm-svn: 160702
2012-07-25 00:02:45 +00:00
Dmitri Gribenko 8f0f1b0c41 Comment diagnostics: add warning for multiple \param commands with duplicate
parameter names.

llvm-svn: 160696
2012-07-24 21:44:16 +00:00
Richard Smith 7ac3c6af87 Pedantic -pedantic correction. Duplicate cv-qualifiers are permitted in C++11
unless they appear in a decl-specifier-seq.

llvm-svn: 160688
2012-07-24 20:24:58 +00:00
Hans Wennborg 84ce606b91 Tweak warning text for returning incomplete type from extern "C" functions.
A warning was added in r150128 for returning non-C compatible
user-defined types from functions with C linkage.

This makes the text more clear for the case when the type isn't
decidedly non-C compatible, but incomplete.

llvm-svn: 160681
2012-07-24 17:59:41 +00:00
Dmitri Gribenko 0a36302ae0 Comment parsing: couple TextTokenRetokenizer and comment parser together to
remove one of the two variable-length lookahead buffers.  Now retokenizer will
ask for more tokens when it needs them.

llvm-svn: 160680
2012-07-24 17:52:18 +00:00
Dmitri Gribenko 1bfd9dadda Move TextTokenRetokenizer from CommentLexer.h to CommentParser.cpp since it is
an implementation detail of the parser.

llvm-svn: 160679
2012-07-24 17:43:18 +00:00
Dmitri Gribenko 1c85d5b17d Comment parsing: retokenized text tokens are now pushed back in correct (not
reverse) order

llvm-svn: 160675
2012-07-24 16:10:47 +00:00
Manuel Klimek 86f8bbced4 Introduces a new concept for binding results to matchers
as per Chandler's request:
- introduces a new matcher base type BindableMatcher that
  provides the bind() call
- makes all dynamic-cast matcher creation functions return
  BindableMatchers; the special case about dynamic-cast
  matchers is that the node they match on and the node
  their child matchers match on are the same node, just
  casted to a different type; thus, there is no ambiguity
  on what bind() matches on; additionally, those are the
  matchers that we name with nouns in the matcher language,
  so it's easy for users to intuitively know which matchers
  are bindable

To make this change possible, we got rid of a non-orthogonal
implementation of thisPointerType, which had an implicit
dynamic-cast matcher from CallExpr to CXXMemberCallExpr; as
alternative, we now provide a memberCall dynamic-cast matcher
and thisPointerType is a predicate on CXXMemberCallExpr.

Last, the ArgumentAdaptingMatcher is actually not required
for the implementation of makeDynCastAllOfComposite - this
simplification makes it more obvious where the bind() call
can be used based on the matcher creation function types.

llvm-svn: 160673
2012-07-24 13:37:29 +00:00
Nick Lewycky 085970736f Emit debug info for dynamic initializers. Permit __attribute__((nodebug)) on
variables that have static storage duration, it removes debug info on the
emitted initializer function but not all debug info about this variable.

llvm-svn: 160659
2012-07-24 01:40:49 +00:00
Dmitri Gribenko 4b7f5fe572 Comment Sema: refactor handling of 'ParmVarDecl's and save them in Sema members.
llvm-svn: 160634
2012-07-23 17:40:30 +00:00
Dmitri Gribenko d73e4ce992 Comment AST: add InlineContentComment::RenderKind to specify a default
rendering mode for clients that don't want to interpret Doxygen commands.

Also add a libclang API to query this information.

llvm-svn: 160633
2012-07-23 16:43:01 +00:00
Sylvestre Ledru 830885ca64 Fix a typo (the the => the)
llvm-svn: 160622
2012-07-23 08:59:39 +00:00
Richard Smith 87f5dc53b2 Add diagnostics for comma at end of enum and for extra semicolon at namespace
scope to -Wc++11-extensions. Move extra semicolon after member function
definition diagnostic out of -pedantic, since C++ allows a single semicolon
there. Keep it in -Wextra-semi, though, since it's still questionable.

llvm-svn: 160618
2012-07-23 05:45:25 +00:00
Richard Smith 505df2340a PR12917: Remove incorrect assumption that lambda mangling information cannot
change once it's been assigned. It can change in two ways:
 1) In a template instantiation, the context declaration should be the
    instantiated declaration, not the declaration in the template.
 2) If a lambda appears in the pattern of a variadic pack expansion, the
    mangling number will depend on the pack length.

llvm-svn: 160614
2012-07-22 23:45:10 +00:00
Francois Pichet 0e2b84312f char16_t and char32_t are defined via typedef in MSVC 11 RC. So introduce a way to disable keywords under Microsoft mode.
llvm-svn: 160612
2012-07-22 11:32:41 +00:00