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2012-08-09[analyzer] Improve readability of the dyn. dispatch bifurcation patchAnna Zaks
r161552. As per Jordan's feedback. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161603 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-09Comment to HTML and XML conversion: ignore commands that contain a declarationDmitri Gribenko
as their argument. For example, \fn, \function, \typedef, \method, \class etc. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161601 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-09Comment to HTML and XML conversion: use CommandTraits to classify commands.Dmitri Gribenko
This also fixes a bug in comment to XML conversion: \result was just an ordinary paragraph, not an alias for \returns. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161596 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-09Unbreak the build.Anna Zaks
Declaring "const Decl *Decl" is not a good idea. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161567 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-09[analyzer] Bifurcate the path with dynamic dispatch.Anna Zaks
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. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161552 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-09Comment parsing: extract TableGen'able pieces into new CommandTraits class.Dmitri Gribenko
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161548 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-08Minor simplification for r161534.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161544 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-08objective-C: refactor/simplify parsing of delayedFariborz Jahanian
method/c-funcs defined in objc class implementation. No intended functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161540 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-08PR13558: Fix typo 'compatiblity'. Thinking of the children. Apparently.Richard Smith
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161537 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-08Handle deprecation diagnostics correctly for C struct fields and Objective-C ↵Eli Friedman
properties/ivars. <rdar://problem/6642337>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161534 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-08Address code review comments for Wstrncat-size warning (r161440).Anna Zaks
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161527 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-08[ms-inline asm] Refactor the logic to generate the AsmString into Sema. NoChad Rosier
functional change intended. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161518 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-08Whitespace.Chad Rosier
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161517 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-08[analyzer] Clean up the printing of FieldRegions for leaks.Jordan Rose
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. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161512 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-08[analyzer] Revamp RegionStore to distinguish regions with symbolic offsets.Jordan Rose
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. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161510 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-08Constify CXXRecordDecl::isVirtuallyDerivedFrom.Jordan Rose
No functionality change. A couple ugly const_casts because the ancestor search code is used for other purposes as well. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161509 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-08Add the IsSimple/IsVolatile parameters to the MSAsmStmt constructor.Chad Rosier
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161503 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-08Implement warning for integral null pointer constants other than the literal 0.David Blaikie
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. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161501 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-08Implement final piece of DR963 and also DR587:Richard Smith
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. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161476 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-07Remove obsolete comment. Obsoleted by r116524 when Type hierarhy bitfieldDmitri Gribenko
implementation was changed to a union of bitfields. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161447 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-07Comment AST: DeclInfo: add a special kind for enums.Dmitri Gribenko
Comment XML: add a root node kind for enums. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161442 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-07Turn on strncat-size warning implemented a while ago.Anna Zaks
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().) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161440 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-07Comment.h: fix typo in commentDmitri Gribenko
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161436 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-07Comment AST: treat enumerators as "variables" in DeclInfo.Dmitri Gribenko
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161435 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-07libclang API for comment-to-xml conversion.Dmitri Gribenko
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! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161431 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-07Remove ScanfArgType and bake that logic into ArgType.Hans Wennborg
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. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161407 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-07Rename analyze_format_string::ArgTypeResult to ArgTypeHans Wennborg
Also remove redundant constructors and unused member functions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161403 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-07Update documentation of HasSideEffects to match its callers' expectations, andRichard Smith
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. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161393 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-07Enhance ClangDiagnosticsEmitter to reject diagnostics that are errors that ↵Ted Kremenek
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> git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161389 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-07Remove two fall through diagnostics from the IgnoredAttributes group, since ↵Ted Kremenek
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. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161376 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-07[ms-inline asm] Stmt destructors are never called, so allocate the AsmToks usingChad Rosier
the ASTContext BumpPtr. Also use the preferred llvm::ArrayRef interface. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161373 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-06objective-c: Implement gcc's -Wdirect-ivar-access option.Fariborz Jahanian
// rdar://6505197 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161362 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-06[analyzer] Add a checker to manage dynamic type propagation.Anna Zaks
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. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161357 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-06Refactor checks for unevaluated contexts into a common utility function.David Blaikie
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. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161355 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-06Comment AST: DeclInfo: collapse a bunch of boolean flags into an enum.Dmitri Gribenko
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161352 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-06[ms-inline asm] Pass Tokens to Sema and store them in the AST. No functionalChad Rosier
change intended. No test case as there's no real way to test at this time. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161342 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-06Fix MIPS DSP Rev1 intrinsics memory properties.Simon Atanasyan
The patch reviewed by Akira Hatanaka. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161333 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-06Comment parser and sema: remove useless return valuesDmitri Gribenko
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161331 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-06Comment diagnostics: warn on duplicate \brief and \return commands.Dmitri Gribenko
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. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161325 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-06Comment diagnostics: \return in void function: specialize diagnostic text forDmitri Gribenko
ObjC methods. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161324 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-06Re-enable pcmpistri/pcmpestri builtins in clang now that llvm supports them ↵Craig Topper
properly. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161319 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-06PR13529: Don't crash if the driver sees an unused input file when running asRichard Smith
'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. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161317 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-06PR13499: Don't try to check whether 'override' has been validly applied untilRichard Smith
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. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161316 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-05Add __builtin_readcyclecounter() to produce the @llvm.readcyclecounter() ↵Hal Finkel
intrinsic. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161310 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-03[analyzer] When a symbol is null, we should track its constraints.Jordan Rose
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. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161280 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-03[analyzer] Flatten path diagnostics for text output like we do for HTML.Jordan Rose
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161279 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-03[analyzer] Track null/uninitialized C++ objects used in method calls.Jordan Rose
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161278 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-03[analyzer] ObjC Inlining: Start tracking dynamic type info in the GDMAnna Zaks
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]; git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161264 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-03Comment diagnostics: warn if \returns is used in a non-function comment or ifDmitri Gribenko
the function returns void. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161261 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-02Comments AST: refactor DeclInfo to use an enum for decl kind instead ofDmitri Gribenko
separate flags. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161217 91177308-0d34-0410-b5e6-96231b3b80d8