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2012-09-28Pull ScopeInfo implementation into its own file.Jordan Rose
The infrastructure for -Warc-repeated-use-of-weak got a little too heavy to leave sitting at the top of Sema.cpp. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164856 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-28-Warc-repeated-use-of-weak: check ivars and variables as well.Jordan Rose
Like properties, loading from a weak ivar twice in the same function can give you inconsistent results if the object is deallocated between the two loads. It is safer to assign to a strong local variable and use that. Second half of <rdar://problem/12280249>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164855 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-28Add a warning (off by default) for repeated use of the same weak property.Jordan Rose
The motivating example: if (self.weakProp) use(self.weakProp); As with any non-atomic test-then-use, it is possible a weak property to be non-nil at the 'if', but be deallocated by the time it is used. The correct way to write this example is as follows: id tmp = self.weakProp; if (tmp) use(tmp); The warning is controlled by -Warc-repeated-use-of-receiver, and uses the property name and base to determine if the same property on the same object is being accessed multiple times. In cases where the base is more complicated than just a single Decl (e.g. 'foo.bar.weakProp'), it picks a Decl for some degree of uniquing and reports the problem under a subflag, -Warc-maybe-repeated-use-of-receiver. This gives a way to tune the aggressiveness of the warning for a particular project. The warning is not on by default because it is not flow-sensitive and thus may have a higher-than-acceptable rate of false positives, though it is less noisy than -Wreceiver-is-weak. On the other hand, it will not warn about some cases that may be legitimate issues that -Wreceiver-is-weak will catch, and it does not attempt to reason about methods returning weak values. Even though this is not a real "analysis-based" check I've put the bug emission code in AnalysisBasedWarnings for two reasons: (1) to run on every kind of code body (function, method, block, or lambda), and (2) to suggest that it may be enhanced by flow-sensitive analysis in the future. The second (smaller) half of this work is to extend it to weak locals and weak ivars. This should use most of the same infrastructure. Part of <rdar://problem/12280249> git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164854 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-27Make getDefaultSynthIvarName() a member of ObjCPropertyDecl.Anna Zaks
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164789 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-27Pass PrintingPolicy by reference, copying it isn't cheap.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164781 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-27Shrink LinkageInfo from 96 bits to 8 bits.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164771 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-27Revert 'Fix a typo 'iff' => 'if''. iff is an abreviation of if and only if. ↵Sylvestre Ledru
See: http://en.wikipedia.org/wiki/If_and_only_if Commit 164766 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164769 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-27Fix a typo 'iff' => 'if'Sylvestre Ledru
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164766 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-27Per discussion in ↵Argyrios Kyrtzidis
http://lists.cs.uiuc.edu/pipermail/cfe-commits/Week-of-Mon-20120917/064551.html have PPCallbacks::InclusionDirective pass the character range for the filename quotes or brackets. rdar://11113134 & http://llvm.org/PR13880 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164743 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-26[libclang] Remove the ParentKind cursor kind from code-completion results.Argyrios Kyrtzidis
This is to reduce dependency to cursors for the code-completion results. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164705 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-26Have ASTUnit::Save() return a bool to indicate save error.Argyrios Kyrtzidis
Removes a dependency of ASTUnit to clang-c/Index.h. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164704 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-26Revert r163022, it caused PR13924.Nico Weber
Add a test for PR13924. Do not revert the test added in r163022, it surprisingly still passes even after reverting the code changes. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164672 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-26Remove unnecessary ASTContext& parameter from SymExpr::getType().Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164661 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-26Fix an edge case of mangling involving the combination of a lambda and typeid.Eli Friedman
typeid (and a couple other non-standard places where we can transform an unevaluated expression into an evaluated expression) is special because it introduces an an expression evaluation context, which conflicts with the mechanism to compute the current lambda mangling context. PR12123. I would appreciate if someone would double-check that we get the mangling correct with this patch. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164658 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-26Fix the AST representation for non-type template arguments to encodeEli Friedman
enough information so we can mangle them correctly in cases involving dependent parameter types. (This specifically impacts cases involving null pointers and cases involving parameters of reference type.) Fix the mangler to use this information instead of trying to scavenge it out of the parameter declaration. <rdar://problem/12296776>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164656 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-26Teach Type::getAs<TemplateSpecializationType> that a TemplateSpecializationTypeRichard Smith
for a type alias template can appear as sugar at any level of desugaring, just like a TypedefType. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164655 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25[Options] Store the option ID in OptTable::Info.Michael J. Spencer
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164644 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25Remove 'const' version of getBasicVals(), which is useless.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164643 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25[driver] Add support for the -fno-fast-math option.Chad Rosier
rdar://12299433 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164638 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25Macro history (de-)serialization. Deserialization currently reads only the ↵Alexander Kornienko
latest macro definition. Needs more work. Summary: Passes all tests (+ the new one with code completion), but needs a thorough review in part related to modules. Reviewers: doug.gregor Reviewed By: alexfh CC: cfe-commits, rsmith Differential Revision: http://llvm-reviews.chandlerc.com/D41 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164610 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25-iframework should allow separate arguments.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164607 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25Introduce builtin macros to determine whether we're building aDouglas Gregor
specific module (__building_module(modulename)) and to get the name of the current module as an identifier (__MODULE__). Used to help headers behave differently when they're being included as part of building a module. Oh, the irony. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164605 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25A minor doc fix.Alexander Kornienko
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164601 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25Add the Microsoft __is_interface_class type trait.John McCall
Patch by Andy Gibbs! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164591 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25Fix for r163013 regression and further __interface enhancement.John McCall
Patch by Andy Gibbs! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164590 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25Fix crash when a decltype expression in a trailing return type refers to theRichard Smith
function being instantiated. An error recovery codepath was recursively performing name lookup (and triggering an unbounded stack of template instantiations which blew out the stack before hitting the depth limit). Patch by Wei Pan! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164586 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-24objective-C: use 'instance variables' as plural when referringFariborz Jahanian
to the feature. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164566 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-24objective-C: remove use of 'ivar' in favor ofFariborz Jahanian
'instance variable' in text of all diagnostics for objective-C: // rdar://12352442 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164559 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-24StringRef'ize Preprocessor::CreateString().Dmitri Gribenko
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164555 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-24Replace an assertion with an error for empty __asm statements.Bob Wilson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164551 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-24Make sure that we don't end up making an #undef'd macro visible afterDouglas Gregor
the fact. Test cases will come when we're actually (de-)serializing macro history. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164549 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-24[libclang] Bring CXCursor_AsmStmt back as an alias for CXCursor_GCCAsmStmt.Argyrios Kyrtzidis
This was renamed in r162632 which was badness because the C API needs to be stable. rdar://12360096 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164547 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-24Include 'long long' extension warning in the LongLong group so that it can beDmitri Gribenko
silenced by -Wno-long-long. Thanks Richard Smith for the fix idea! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164546 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-24Change the wording of the extension warning fromDmitri Gribenko
> 'long long' is an extension when C99 mode is not enabled to > 'long long' is a C++11 extension while compiling in C++98 mode. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164545 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-24[analyzer] Remove unused.Anna Zaks
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164542 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-24Small cleanup of literal semantic analysis: hiding 'char *' pointers behindDmitri Gribenko
StringRef makes code cleaner. Also, make the temporary buffer smaller: 512 characters is unreasonably large for integer literals. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164484 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-23Implement ToolChain::IsUnwindTablesDefault to reduce code duplication a bit.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164473 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-22Comment sema: warn when comment has \deprecated but declaration does not have aDmitri Gribenko
deprecation attribute ('deprecated', 'availability' or 'unavailable'). This warning is under a separate flag, -Wdocumentation-deprecated-sync, so it can be turned off easily while leaving other -Wdocumentation warnings on. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164467 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-22Remove superfluous \namespace command.Dmitri Gribenko
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164466 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-22[analyzer] Suppress bugs whose paths go through the return of a null pointer.Jordan Rose
This is a heuristic intended to greatly reduce the number of false positives resulting from inlining, particularly inlining of generic, defensive C++ methods that live in header files. The suppression is triggered in the cases where we ask to track where a null pointer came from, and it turns out that the source of the null pointer was an inlined function call. This change brings the number of bug reports in LLVM from ~1500 down to around ~300, a much more manageable number. Yes, some true positives may be hidden as well, but from what I looked at the vast majority of silenced reports are false positives, and many of the true issues found by the analyzer are still reported. I'm hoping to improve this heuristic further by adding some exceptions next week (cases in which a bug should still be reported). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164449 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-22[analyzer] Allow a BugReport to be marked "invalid" during path generation.Jordan Rose
This is intended to allow visitors to make decisions about whether a BugReport is likely a false positive. Currently there are no visitors making use of this feature, so there are no tests. When a BugReport is marked invalid, the invalidator must provide a key that identifies the invaliation (intended to be the visitor type and a context pointer of some kind). This allows us to reverse the decision later on. Being able to reverse a decision about invalidation gives us more flexibility, and allows us to formulate conditions like "this report is invalid UNLESS the original argument is 'foo'". We can use this to fine-tune our false-positive suppression (coming soon). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164446 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-22Use llvm::getOrdinalSuffix to print ordinal numbers in diagnostics.Jordan Rose
Just a refactoring of common infrastructure. No intended functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164443 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-22Fix bug which sometimes resulted in further diagnostics being produced after aRichard Smith
fatal error. Previously, if a fatal error was followed by a diagnostic which was suppressed due to a SFINAETrap, we'd forget that we'd seen a fatal error. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164437 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-21objective-C: when diagnosing deprecated/unavailable usage ofFariborz Jahanian
setter or getter backing a deprecated/unavailable property, also not location of the property. // rdar://12324295 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164412 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-21Add four new command line options for MIPS CPU selection:Simon Atanasyan
-mips32, -mips32r2, -mips64, -mips64r2. The patch reviewed by Eric Christopher. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164410 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-21Update comment.Chad Rosier
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164390 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-21Use MapVectors to make the order we mark virtual functions used by a vtableRafael Espindola
deterministic. Fixes pr13868. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164382 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-21Make warnings about uninitialized fields include the field name.Hans Wennborg
This makes the wording more informative, and consistent with the other warnings about uninitialized variables. Also, me and David who reviewed this couldn't figure out why we would need to do a lookup to get the name of the variable; so just print the name directly. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164366 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-21Simplify getRuntimeDefinition() back to taking no arguments.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164363 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-21PR13890: Warn on abstract final classes.David Blaikie
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164359 91177308-0d34-0410-b5e6-96231b3b80d8
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