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2012-02-14[analyzer] Make Malloc Checker optimistic in presence of inlining.Anna Zaks
(In response of Ted's review of r150112.) This moves the logic which checked if a symbol escapes through a parameter to invalidateRegionCallback (instead of post CallExpr visit.) To accommodate the change, added a CallOrObjCMessage parameter to checkRegionChanges callback. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150513 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-14Pending clear answer from WG21 on whether core issue 903 is intended to apply toRichard Smith
C++11 or just C++17, restrict the set of null pointer constants in C++11 mode back to those which were considered null in C++98. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150510 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-14Check the return type of lambda expressions.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150503 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-14Warn about non-int main() results in GNU C mode instead of erroring.John McCall
Based on a patch by Vasiliy Korchagin! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150500 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-14Implement support for lambda capture pack expansions, e.g.,Douglas Gregor
[&values...] { print(values...); } git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150497 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-14Use several weighted factors to determine typo candidate viablity.Kaelyn Uhrain
Replace the simple Levenshtein edit distance for typo correction candidates--and the hacky way adding namespace qualifiers would affect the edit distance--with a synthetic "edit distance" comprised of several factors and their relative weights. This also allows the typo correction callback object to convey more information about the viability of a correction candidate than simply viable or not viable. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150495 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-14Implement AST (de-)serialization for lambda expressions.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150491 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-14Refactor DiagnosticRenderer and SDiagsRenderer to have some functionalityTed Kremenek
pulled into DiagnosticNoteRenderer, and common DiagnosticRenderer that assumes that all custom diagnostic messages are notes. Also extend DiagnosticRenderer to work with StoredDiagnostics in preparation for subsequent changes. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150455 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-14Add helper methods to StoredDiagnostic.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150454 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-14Refactor out new function EmitInitializerForField from ↵Eli Friedman
EmitMemberInitializer. The new function will be used to initialize the fields of lambda expressions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150451 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-13Add a subgroup of -Wreturn-type, -Wreturn-type-c-linkage.Matt Beaumont-Gay
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150418 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-13Introduce support for template instantiation of lambdaDouglas Gregor
expressions. This is mostly a simple refact, splitting the main "start a lambda expression" function into smaller chunks that are driven either from the parser (Sema::ActOnLambdaExpr) or during AST transformation (TreeTransform::TransformLambdaExpr). A few minor interesting points: - Added new entry points for TreeTransform, so that we can explicitly establish the link between the lambda closure type in the template and the lambda closure type in the instantiation. - Added a bit into LambdaExpr specifying whether it had an explicit result type or not. We should have had this anyway. This code is 'lightly' tested. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150417 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-13Remove unused diagnostics from include/clang/Basic/Diagnostic*.td files.Dmitri Gribenko
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150409 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-13[analyzer] Malloc checker: rework realloc handling:Anna Zaks
1) Support the case when realloc fails to reduce False Positives. (We essentially need to restore the state of the pointer being reallocated.) 2) Realloc behaves differently under special conditions (from pointer is null, size is 0). When detecting these cases, we should consider under-constrained states (size might or might not be 0). The old version handled this in a very hacky way. The code did not differentiate between definite and possible (no consideration for under-constrained states). Further, after processing each special case, the realloc processing function did not return but chained to the next special case processing. So you could end up in an execution in which you first see the states in which size is 0 and realloc ~ free(), followed by the states corresponding to size is not 0 followed by the evaluation of the regular realloc behavior. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150402 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-13Split the storage of lambda information between the LambdaExpr and theDouglas Gregor
CXXRecordDecl in a way that actually makes some sense: - LambdaExpr contains all of the information for initializing the lambda object, including the capture initializers and associated array index variables. - CXXRecordDecl's LambdaDefinitionData contains the captures, which are needed to understand the captured variable references in the body of the lambda. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150401 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-13Keep track of the set of array index variables we use when weDouglas Gregor
synthesize a by-copy captured array in a lambda. This information will be needed by IR generation. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150396 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-13Move the storage of lambda captures and capture initializers fromDouglas Gregor
LambdaExpr over to the CXXRecordDecl. This allows us to eliminate the back-link from the closure type to the LambdaExpr, which will simplify and lazify AST deserialization. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150393 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-13StaticAnalyzer/Core: fix MSVC buildDylan Noblesmith
Fix build breakage from r150378: MSVC only allows taking the address of a member function using the &ClassName::Function syntax.# It was giving git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150387 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-13Fix typo in PrintfConversionSpecifier::isDoubleArg()Hans Wennborg
This makes the printf diagnostics issue warnigns for %a, %A, %e, etc. when used with the wrong argument. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150370 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-13Update constexpr implementation to match CWG's chosen approach for core issuesRichard Smith
1358, 1360, 1452 and 1453. - Instantiations of constexpr functions are always constexpr. This removes the need for separate declaration/definition checking, which is now gone. - This makes it possible for a constexpr function to be virtual, if they are only dependently virtual. Virtual calls to such functions are not constant expressions. - Likewise, it's now possible for a literal type to have virtual base classes. A constexpr constructor for such a type cannot actually produce a constant expression, though, so add a special-case diagnostic for a constructor call to such a type rather than trying to evaluate it. - Classes with trivial default constructors (for which value initialization can produce a fully-initialized value) are considered literal types. - Classes with volatile members are not literal types. - constexpr constructors can be members of non-literal types. We do not yet use static initialization for global objects constructed in this way. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150359 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-12Move -Wdangling-else under -Wparentheses to be backwards compatibile with GCC.David Blaikie
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150349 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-12Within the body of a lambda expression, decltype((x)) for anDouglas Gregor
id-expression 'x' will compute the type based on the assumption that 'x' will be captured, even if it isn't captured, per C++11 [expr.prim.lambda]p18. There are two related refactors that go into implementing this: 1) Split out the check that determines whether we should capture a particular variable reference, along with the computation of the type of the field, from the actual act of capturing the variable. 2) Always compute the result of decltype() within Sema, rather than AST, because the decltype() computation is now context-sensitive. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150347 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-12Proper initializer list support for new expressions and type construct ↵Sebastian Redl
expressions. Array new still missing. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150346 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-12Change the way we store initialization kinds so that all direct inits can ↵Sebastian Redl
distinguish between list and parens form. This allows us to correctly diagnose the last test cases from litb. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150343 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-12Employ DirectList initialized entities to properly sort through some ↵Sebastian Redl
initialization edge cases. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150342 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-11Represent C++ direct initializers as ParenListExprs before semantic analysisSebastian Redl
instead of having a special-purpose function. - ActOnCXXDirectInitializer, which was mostly duplication of AddInitializerToDecl (leading e.g. to PR10620, which Eli fixed a few days ago), is dropped completely. - MultiInitializer, which was an ugly hack I added, is dropped again. - We now have the infrastructure in place to distinguish between int x = {1}; int x({1}); int x{1}; -- VarDecl now has getInitStyle(), which indicates which of the above was used. -- CXXConstructExpr now has a flag to indicate that it represents list- initialization, although this is not yet used. - InstantiateInitializer was renamed to SubstInitializer and simplified. - ActOnParenOrParenListExpr has been replaced by ActOnParenListExpr, which always produces a ParenListExpr. Placed that so far failed to convert that back to a ParenExpr containing comma operators have been fixed. I'm pretty sure I could have made a crashing test case before this. The end result is a (I hope) considerably cleaner design of initializers. More importantly, the fact that I can now distinguish between the various initialization kinds means that I can get the tricky generalized initializer test cases Johannes Schaub supplied to work. (This is not yet done.) This commit passed self-host, with the resulting compiler passing the tests. I hope it doesn't break more complicated code. It's a pretty big change, but one that I feel is necessary. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150318 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-11Drive-by fix of incorrect diagnostic, and a test case for said diagnostic. ↵Sebastian Redl
The double error is unfortunate, but I really don't see an alternative whose effort is worth it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150317 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-11Implement warning for non-wide string literals with an unexpected encoding. ↵Eli Friedman
Downgrade error for non-wide character literals with an unexpected encoding to a warning for compatibility with gcc and older versions of clang. <rdar://problem/10837678>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150295 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-11Make sure Sema creates a field for 'this' captures. (Doug, please ↵Eli Friedman
double-check that this is correct.) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150292 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-11const-qualify CXXRecordDecl::getCaptureFields.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150284 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-10Implement C++11 [expr.lambda.prim]p13, which prohibits lambdas inDouglas Gregor
default arguments if in fact those lambdas capture any entity. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150282 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-10Have the driver pass CPU and target feature information to cc1as.Jim Grosbach
When creating the MCSubtargetInfo, the assembler driver uses the CPU and feature string to construct a more accurate model of what instructions are and are not legal. rdar://10840476 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150273 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-10[libclang] Indexing API: Fully index implict template instantiations.Argyrios Kyrtzidis
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150267 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-10Update MultiplexASTMutationListener with the missing methods from ↵Argyrios Kyrtzidis
ASTMutationListener. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150265 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-10Allow implicit capture of 'this' in a lambda even when the captureDouglas Gregor
default is '=', and reword the warning about explicitly capturing 'this' in such lambdas to indicate that only explicit capture is banned. Introduce Fix-Its for this and other "save the programmer from themself" rules regarding what can be explicitly captured and what must be implicitly captured. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150256 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-10PR11684, core issue 1417:Richard Smith
o Correct the handling of the restrictions on usage of cv-qualified and ref-qualified function types. o Fix a bug where such types were rejected in template type parameter default arguments, due to such arguments not being treated as a template type arg context. o Remove the ExtWarn for usage of such types as template arguments; that was a standard defect, not a GCC extension. o Improve the wording and unify the code for diagnosing cv-qualifiers with the code for diagnosing ref-qualifiers. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150244 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-10Track whether a function type has a trailing return type as type sugar. Use thisRichard Smith
to pretty-print such function types better, and to fix a case where we were not instantiating templates in lexical order. In passing, move the Variadic bit from Type's bitfields to FunctionProtoType to get the Type bitfields down to 32 bits. Also ensure that we always substitute the return type of a function when substituting explicitly-specified arguments, since that can cause us to bail out with a SFINAE error before we hit a hard error in parameter substitution. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150241 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-10Extend CXXRecordDecl with a function that determines the mapping fromDouglas Gregor
the variables captured by a lambda to the fields that store the captured values. To be used in IRgen. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150235 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-10Update to new resolution for DR1458. When taking the address of an object ofRichard Smith
incomplete class type which has an overloaded operator&, it's now just unspecified whether the overloaded operator or the builtin is used. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150234 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-10Move -Wswitch from -Wmost to -Wall, consitent with GCC.David Blaikie
This is a relatively noisy warning for a codebase not explicitly designed for it (effectively enforcing a stylistic constraint about the use of defaults in switches over enums) & there's nothing Clang does to clean up the noise when compared to GCC's implementation so the same decision seems suitable. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150230 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-10Revert r145999. This turned out to be a bad idea. Unfortunately, 'id' is ↵Ted Kremenek
used so profusely in many APIs and large codebases that this made the deprecated warning trigger happy to the point of not being useful. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150223 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-09objc: If a method is not implemented in the category implementation butFariborz Jahanian
has been declared in its primary class, superclass, or in one of their protocols, no need to issue unimplemented method. // rdar://10823023 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150206 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-09Kill the brief and full explanation fields from StaticDiagInfoRec. They were ↵Benjamin Kramer
unused and wasted space for nothing. - per PR11952. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150199 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-09Don't allow deduction of a lambda result type from an initializerDouglas Gregor
list; it is not an expression. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150194 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-09Implement return type deduction for lambdas per C++11Douglas Gregor
[expr.prim.lambda]p4, including the current suggested resolution of core isue 975, which allows multiple return statements so long as the types match. ExtWarn when user code is actually making use of this extension. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150168 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-09Remove the "unsupported" error for lambda expressions. It's annoying,Douglas Gregor
and rapidly becoming untrue. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150165 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-09Implement C++ [expr.prim.lambda]p2, which bans lambda expressions inDouglas Gregor
unevaluated operands. Be certain that we're marking everything referenced within a capture initializer as odr-used. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150163 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-09Fix ASTReader::FinishedDeserializing().Argyrios Kyrtzidis
We were passing a decl to the consumer after all pending deserializations were finished but this was not enough; due to processing by the consumer we may end up into yet another deserialization process but the way FinishedDeserializing() was setup we would not ensure that everything was fully deserialized before returning to the consumer. Separate ASTReader::FinishedDeserializing() into two semantic actions. The first is ensuring that a deserialization process ends up will fully deserialized decls/types even if the process is started by the consumer. The second is pushing "interesting" decls to the consumer; we make sure that we don't re-enter this section recursively be checking a variable. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150160 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-09CWG issue 1405: mutable members are allowed in literal types, but can't undergoRichard Smith
lvalue-to-rvalue conversions in constant expressions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150145 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-09Fix a typo in the LambdaExpr class.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150139 91177308-0d34-0410-b5e6-96231b3b80d8
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