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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
2012-09-21ARM: Use a dedicated intrinsic for vector bitwise select.Jim Grosbach
The expression based expansion too often results in IR level optimizations splitting the intermediate values into separate basic blocks, preventing the formation of the VBSL instruction as the code author intended. In particular, LICM would often hoist part of the computation out of a loop. rdar://11011471 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164342 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-21Implement faux-body-synthesis of well-known functions in the static analyzer ↵Ted Kremenek
when their implementations are unavailable. Start by simulating dispatch_sync(). This change is largely a bunch of plumbing around something very simple. We use AnalysisDeclContext to conjure up a fake function body (using the current ASTContext) when one does not exist. This is controlled under the analyzer-config option "faux-bodies", which is off by default. The plumbing in this patch is largely to pass the necessary machinery around. CallEvent needs the AnalysisDeclContextManager to get the function definition, as one may get conjured up lazily. BugReporter and PathDiagnosticLocation needed to be relaxed to handle invalid locations, as the conjured body has no real source locations. We do some primitive recovery in diagnostic generation to generate some reasonable locations (for arrows and events), but it can be improved. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164339 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-21Constify method.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164338 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-21Ensure that the Decl* wrapped by an AnalysisDeclContext cannot be changed afterTed Kremenek
construction. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164337 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-21Remove unused fields.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164336 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-20If the range in a for range statement doesn't have a viable begin/end function,Richard Smith
but can be dereferenced to form an expression which does have viable begin/end functions, then typo-correct the range, even if something else goes wrong with the statement (such as inaccessible begin/end or the wrong type of loop variable). In order to ensure we recover correctly and produce any followup diagnostics in this case, redo semantic analysis on the for-range statement outside of the diagnostic trap, after issuing the typo-correction. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164323 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-20Improvements to my patch in r164143 perFariborz Jahanian
Richard's comments. // rdar://12202422 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164316 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-20Include types when a definition's type differs from a prior declaration.David Blaikie
This is some really old code (took me a while to find the test cases) & the diagnostic text is slightly incorrect (it should really only apply to re/declarations/, redefinitions are an error regardless of whether the types match). Not sure if anyone cares about it, though. For now this just makes the diagnostic more clear in less obvious cases where the type of a declaration might not be explicitly written (eg: because it uses decltype) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164313 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-20Add some matchers for basic AST nodes.Daniel Jasper
Patch by Gábor Horváth. Review: http://llvm-reviews.chandlerc.com/D45 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164304 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-20Be more consistent about ending suggestions with a '?'Nico Weber
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164301 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-20Provide better error messages for incorrect matchers.Daniel Jasper
By changing the conversion operator into a conversion constructor, we can enabled based on the template parameters leading to better error messages. E.g.: stmt(decl()) will now create an error message including: note: candidate function not viable: no known conversion from 'clang::ast_matchers::internal::BindableMatcher<clang::Decl>' to 'const clang::ast_matchers::internal::Matcher<clang::Stmt>' for 1st argument git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164298 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-20Handle lambdas where the lambda-declarator is an explicit "(void)". PR13854.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164274 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-20Per C++11 [class.friend]p3, the 'friend' keyword must appear first in aRichard Smith
non-function friend declaration. Patch by Josh Magee! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164273 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-20PR13881: Add -Wzero-length-array for zero length array extension, and move ↵Richard Smith
it into -Wgnu. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164272 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-19Add some typedefs for clarity.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164223 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-19Remove Context argument from TemplateDeductionInfo constructor. It was no ↵Craig Topper
longer needed after the unused Context member was removed in r164104. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164196 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-19Add the TypeSourceInfo for the lambda call operator to the lambda'sEli Friedman
definition info; it needs to be there because the mangler needs to access it before we're finished defining the lambda class. PR12808. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164186 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-18c: warn when an integer value comparison with anFariborz Jahanian
integral expression have the obvious result. Patch reviewed by John McCall off line. // rdar://12202422 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164143 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-18Add missing matcher for C-style cast expressions.Daniel Jasper
Patch by Gábor Horváth. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164123 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-18Make all VariadicDynCast-Expr-matchers StatementMatchersDaniel Jasper
Having Expr-subclass-matchers being VariadicDynCast-Expr-matchers does not provide additional type safety and just makes using them harder. In the clang AST, expressions are always statements and an expression matcher can be used anywhere, a statement matcher is expected. Any given matcher definition still has at least one noun. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164121 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-18Remove an unused private field exposed by the recent LLVM_DELETED_FUNCTION ↵Craig Topper
changes. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164104 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-18Remove an unused private field exposed by the recent LLVM_DELETED_FUNCTION ↵Craig Topper
changes. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164103 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-18Mark unimplemented copy constructors and copy assignment operators with ↵Craig Topper
LLVM_DELETED_FUNCTION. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164102 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-18If a comma operator is followed by a token which unambiguously indicates theRichard Smith
start of a statement or the end of a compound-statement, diagnose the comma as a typo for a semicolon. Patch by Ahmed Bougacha! Additional test cases and minor refactoring by me. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164085 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-18Per discussion on cfe-dev, remove -Wunique-enums entirely. ThereTed Kremenek
is no compelling argument that this is a generally useful warning, and imposes a strong stylistic argument on code beyond what it was intended to find warnings in. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164083 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-17objective-C: improve on warnings about misplacement of methodFariborz Jahanian
argument names. // rdar://12263549 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164077 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-17objective-C: issue warning when there is no whitespaceFariborz Jahanian
between objc method parameter name and colon. // rdar://12263549 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164047 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-17[analyzer] Teach the analyzer about implicit initialization of staticsAnna Zaks
in ObjCMethods. Extend FunctionTextRegion to represent ObjC methods as well as functions. Note, it is not clear what type ObjCMethod region should return. Since the type of the FunctionText region is not currently used, defer solving this issue. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164046 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-17Open up a few higher-level functions for tools.Axel Naumann
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164028 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-15Comment parsing: support \namespace like other commands that contain just aDmitri Gribenko
declaration for the entity being documented. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@163986 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-15Use LLVM_DELETED_FUNCTION in place of 'DO NOT IMPLEMENT' comments.Dmitri Gribenko
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@163983 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-15Make PTHManager properly noncopyable.Dmitri Gribenko
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@163982 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-15Address a long-standing FIXME: remove an unused copy constructor and makeDmitri Gribenko
UnqualifiedId() properly noncopyable. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@163981 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-15const _Atomic(T) is not an atomic type, so do not allow it as the type 'A' inRichard Smith
C11 7.17's atomic operations. GNU's __atomic_* builtins do allow const-qualified atomics, though (!!) so don't restrict those. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@163964 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-15-Warc-retain-cycles: warn at variable initialization as well as assignment.Jordan Rose
Specifically, this should warn: __block block_t a = ^{ a(); }; Furthermore, this case which previously warned now does not, since the value of 'b' is captured before the assignment occurs: block_t b; // not __block b = ^{ b(); }; (This will of course warn under -Wuninitialized, as before.) <rdar://problem/11015883> git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@163962 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-14objective-C arc: remove -Warc-abi in its entirety.Fariborz Jahanian
// rdar://10554025 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@163917 91177308-0d34-0410-b5e6-96231b3b80d8
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