clang  6.0.0svn
Macros | Enumerations | Functions
SemaChecking.cpp File Reference
#include "clang/AST/ASTContext.h"
#include "clang/AST/CharUnits.h"
#include "clang/AST/DeclCXX.h"
#include "clang/AST/DeclObjC.h"
#include "clang/AST/EvaluatedExprVisitor.h"
#include "clang/AST/Expr.h"
#include "clang/AST/ExprCXX.h"
#include "clang/AST/ExprObjC.h"
#include "clang/AST/ExprOpenMP.h"
#include "clang/AST/StmtCXX.h"
#include "clang/AST/StmtObjC.h"
#include "clang/Analysis/Analyses/FormatString.h"
#include "clang/Basic/CharInfo.h"
#include "clang/Basic/SyncScope.h"
#include "clang/Basic/TargetBuiltins.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/Lex/Lexer.h"
#include "clang/Sema/Initialization.h"
#include "clang/Sema/Lookup.h"
#include "clang/Sema/ScopeInfo.h"
#include "clang/Sema/Sema.h"
#include "clang/Sema/SemaInternal.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallBitVector.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/Support/ConvertUTF.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/Locale.h"
#include "llvm/Support/raw_ostream.h"
#include "clang/Basic/Builtins.def"
#include "clang/Basic/arm_neon.inc"
Include dependency graph for SemaChecking.cpp:

Go to the source code of this file.

Macros

#define BUILTIN(ID, TYPE, ATTRS)
 
#define ATOMIC_BUILTIN(ID, TYPE, ATTRS)
 
#define GET_NEON_OVERLOAD_CHECK
 
#define GET_NEON_IMMEDIATE_CHECK
 
#define BUILTIN_ROW(x)
 

Enumerations

enum  StringLiteralCheckType
 
enum  AbsoluteValueKind { AVK_Integer, AVK_Floating, AVK_Complex }
 
enum  LimitType
 

Functions

static bool checkArgCount (Sema &S, CallExpr *call, unsigned desiredArgCount)
 Checks that a call expression's argument count is the desired number. More...
 
static bool SemaBuiltinAnnotation (Sema &S, CallExpr *TheCall)
 Check that the first argument to __builtin_annotation is an integer and the second argument is a non-wide string literal. More...
 
static bool SemaBuiltinMSVCAnnotation (Sema &S, CallExpr *TheCall)
 
static bool SemaBuiltinAddressof (Sema &S, CallExpr *TheCall)
 Check that the argument to __builtin_addressof is a glvalue, and set the result type to the corresponding pointer type. More...
 
static bool SemaBuiltinOverflow (Sema &S, CallExpr *TheCall)
 
static void SemaBuiltinMemChkCall (Sema &S, FunctionDecl *FDecl, CallExpr *TheCall, unsigned SizeIdx, unsigned DstSizeIdx)
 
static bool SemaBuiltinCallWithStaticChain (Sema &S, CallExpr *BuiltinCall)
 
static bool SemaBuiltinSEHScopeCheck (Sema &SemaRef, CallExpr *TheCall, Scope::ScopeFlags NeededScopeFlags, unsigned DiagID)
 
static bool isBlockPointer (Expr *Arg)
 
static bool checkOpenCLBlockArgs (Sema &S, Expr *BlockArg)
 OpenCL C v2.0, s6.13.17.2 - Checks that the block parameters are all local void*, which is a requirement of device side enqueue. More...
 
static bool checkOpenCLSubgroupExt (Sema &S, CallExpr *Call)
 
static bool SemaOpenCLBuiltinNDRangeAndBlock (Sema &S, CallExpr *TheCall)
 
static bool SemaOpenCLBuiltinKernelWorkGroupSize (Sema &S, CallExpr *TheCall)
 OpenCL C v2.0, s6.13.17.6 - Check the argument to the get_kernel_work_group_size and get_kernel_preferred_work_group_size_multiple builtin functions. More...
 
static bool checkOpenCLEnqueueIntType (Sema &S, Expr *E, const QualType &IntType)
 Diagnose integer type and any valid implicit conversion to it. More...
 
static bool checkOpenCLEnqueueLocalSizeArgs (Sema &S, CallExpr *TheCall, unsigned Start, unsigned End)
 
static bool checkOpenCLEnqueueVariadicArgs (Sema &S, CallExpr *TheCall, Expr *BlockArg, unsigned NumNonVarArgs)
 OpenCL v2.0, s6.13.17.1 - Check that sizes are provided for all 'local void*' parameter of passed block. More...
 
static bool SemaOpenCLBuiltinEnqueueKernel (Sema &S, CallExpr *TheCall)
 OpenCL C v2.0, s6.13.17 - Enqueue kernel function contains four different overload formats specified in Table 6.13.17.1. More...
 
static OpenCLAccessAttr * getOpenCLArgAccess (const Decl *D)
 Returns OpenCL access qual. More...
 
static bool checkOpenCLPipeArg (Sema &S, CallExpr *Call)
 Returns true if pipe element type is different from the pointer. More...
 
static bool checkOpenCLPipePacketType (Sema &S, CallExpr *Call, unsigned Idx)
 Returns true if pipe element type is different from the pointer. More...
 
static bool SemaBuiltinRWPipe (Sema &S, CallExpr *Call)
 
static bool SemaBuiltinReserveRWPipe (Sema &S, CallExpr *Call)
 
static bool SemaBuiltinCommitRWPipe (Sema &S, CallExpr *Call)
 
static bool SemaBuiltinPipePackets (Sema &S, CallExpr *Call)
 
static bool SemaOpenCLBuiltinToAddr (Sema &S, unsigned BuiltinID, CallExpr *Call)
 
static unsigned RFT (unsigned t, bool shift=false, bool ForceQuad=false)
 
static QualType getNeonEltType (NeonTypeFlags Flags, ASTContext &Context, bool IsPolyUnsigned, bool IsInt64Long)
 getNeonEltType - Return the QualType corresponding to the elements of the vector type specified by the NeonTypeFlags. More...
 
static bool SemaBuiltinCpuSupports (Sema &S, CallExpr *TheCall)
 SemaBuiltinCpuSupports - Handle __builtin_cpu_supports(char *). More...
 
static bool SemaBuiltinCpuIs (Sema &S, CallExpr *TheCall)
 SemaBuiltinCpuIs - Handle __builtin_cpu_is(char *). More...
 
static bool CheckNonNullExpr (Sema &S, const Expr *Expr)
 Checks if a the given expression evaluates to null. More...
 
static void CheckNonNullArgument (Sema &S, const Expr *ArgExpr, SourceLocation CallSiteLoc)
 
static void DiagnoseCStringFormatDirectiveInCFAPI (Sema &S, const NamedDecl *FDecl, Expr **Args, unsigned NumArgs)
 Diagnose use of s directive in an NSString which is being passed as formatting string to formatting method. More...
 
static bool isNonNullType (ASTContext &ctx, QualType type)
 Determine whether the given type has a non-null nullability annotation. More...
 
static void CheckNonNullArguments (Sema &S, const NamedDecl *FDecl, const FunctionProtoType *Proto, ArrayRef< const Expr *> Args, SourceLocation CallSiteLoc)
 
static bool isValidOrderingForOp (int64_t Ordering, AtomicExpr::AtomicOp Op)
 
static bool checkBuiltinArgument (Sema &S, CallExpr *E, unsigned ArgIndex)
 checkBuiltinArgument - Given a call to a builtin function, perform normal type-checking on the given argument, updating the call in place. More...
 
static bool checkVAStartABI (Sema &S, unsigned BuiltinID, Expr *Fn)
 Check that the user is calling the appropriate va_start builtin for the target and calling convention. More...
 
static bool checkVAStartIsInVariadicFunction (Sema &S, Expr *Fn, ParmVarDecl **LastParam=nullptr)
 
static void sumOffsets (llvm::APSInt &Offset, llvm::APSInt Addend, BinaryOperatorKind BinOpKind, bool AddendIsRight)
 
static void CheckFormatString (Sema &S, const FormatStringLiteral *FExpr, const Expr *OrigFormatExpr, ArrayRef< const Expr *> Args, bool HasVAListArg, unsigned format_idx, unsigned firstDataArg, Sema::FormatStringType Type, bool inFunctionCall, Sema::VariadicCallType CallType, llvm::SmallBitVector &CheckedVarArgs, UncoveredArgHandler &UncoveredArg)
 
static StringLiteralCheckType checkFormatStringExpr (Sema &S, const Expr *E, ArrayRef< const Expr *> Args, bool HasVAListArg, unsigned format_idx, unsigned firstDataArg, Sema::FormatStringType Type, Sema::VariadicCallType CallType, bool InFunctionCall, llvm::SmallBitVector &CheckedVarArgs, UncoveredArgHandler &UncoveredArg, llvm::APSInt Offset)
 
template<typename MemberKind >
static llvm::SmallPtrSet< MemberKind *, 1 > CXXRecordMembersNamed (StringRef Name, Sema &S, QualType Ty)
 
static bool requiresParensToAddCast (const Expr *E)
 
static std::pair< QualType, StringRef > shouldNotPrintDirectly (const ASTContext &Context, QualType IntendedTy, const Expr *E)
 
static unsigned getLargerAbsoluteValueFunction (unsigned AbsFunction)
 
static QualType getAbsoluteValueArgumentType (ASTContext &Context, unsigned AbsType)
 
static unsigned getBestAbsFunction (ASTContext &Context, QualType ArgType, unsigned AbsFunctionKind)
 
static AbsoluteValueKind getAbsoluteValueKind (QualType T)
 
static unsigned changeAbsFunction (unsigned AbsKind, AbsoluteValueKind ValueKind)
 
static unsigned getAbsoluteValueFunctionKind (const FunctionDecl *FDecl)
 
static void emitReplacement (Sema &S, SourceLocation Loc, SourceRange Range, unsigned AbsKind, QualType ArgType)
 
template<std::size_t StrLen>
static bool IsStdFunction (const FunctionDecl *FDecl, const char(&Str)[StrLen])
 
static bool CheckMemorySizeofForComparison (Sema &S, const Expr *E, IdentifierInfo *FnName, SourceLocation FnLoc, SourceLocation RParenLoc)
 Takes the expression passed to the size_t parameter of functions such as memcmp, strncat, etc and warns if it's a comparison. More...
 
static const CXXRecordDeclgetContainedDynamicClass (QualType T, bool &IsContained)
 Determine whether the given type is or contains a dynamic class type (e.g., whether it has a vtable). More...
 
static const ExprgetSizeOfExprArg (const Expr *E)
 If E is a sizeof expression, returns its argument expression, otherwise returns NULL. More...
 
static QualType getSizeOfArgType (const Expr *E)
 If E is a sizeof expression, returns its argument type. More...
 
static const ExprignoreLiteralAdditions (const Expr *Ex, ASTContext &Ctx)
 
static bool isConstantSizeArrayWithMoreThanOneElement (QualType Ty, ASTContext &Context)
 
static bool referToTheSameDecl (const Expr *E1, const Expr *E2)
 Check if two expressions refer to the same declaration. More...
 
static const ExprgetStrlenExprArg (const Expr *E)
 
static const ExprEvalVal (const Expr *E, SmallVectorImpl< const DeclRefExpr * > &refVars, const Decl *ParentDecl)
 EvalVal - This function is complements EvalAddr in the mutual recursion. More...
 
static const ExprEvalAddr (const Expr *E, SmallVectorImpl< const DeclRefExpr * > &refVars, const Decl *ParentDecl)
 EvalAddr - EvalAddr and EvalVal are mutually recursive functions that check if the expression in a return statement evaluates to an address to a location on the stack, a local block, an address of a label, or a reference to local temporary. More...
 
static void CheckReturnStackAddr (Sema &S, Expr *RetValExp, QualType lhsType, SourceLocation ReturnLoc)
 CheckReturnStackAddr - Check if a return statement returns the address of a stack variable. More...
 
static bool CheckForReference (Sema &SemaRef, const Expr *E, const PartialDiagnostic &PD)
 
static bool IsInAnyMacroBody (const SourceManager &SM, SourceLocation Loc)
 
static void diagnoseArrayStarInParamType (Sema &S, QualType PType, SourceLocation Loc)
 
static CharUnits getDeclAlign (Expr *E, CharUnits TypeAlign, ASTContext &Context)
 A helper function to get the alignment of a Decl referred to by DeclRefExpr or MemberExpr. More...
 
static bool IsTailPaddedMemberArray (Sema &S, const llvm::APInt &Size, const NamedDecl *ND)
 Check whether this array fits the idiom of a size-one tail padded array member of a struct. More...
 
static bool considerVariable (VarDecl *var, Expr *ref, RetainCycleOwner &owner)
 Consider whether capturing the given variable can possibly lead to a retain cycle. More...
 
static bool findRetainCycleOwner (Sema &S, Expr *e, RetainCycleOwner &owner)
 
static ExprfindCapturingExpr (Sema &S, Expr *e, RetainCycleOwner &owner)
 Check whether the given argument is a block which captures a variable. More...
 
static void diagnoseRetainCycle (Sema &S, Expr *capturer, RetainCycleOwner &owner)
 
static bool isSetterLikeSelector (Selector sel)
 Check for a keyword selector that starts with the word 'add' or 'set'. More...
 
static Optional< int > GetNSMutableArrayArgumentIndex (Sema &S, ObjCMessageExpr *Message)
 
static Optional< int > GetNSMutableDictionaryArgumentIndex (Sema &S, ObjCMessageExpr *Message)
 
static Optional< int > GetNSSetArgumentIndex (Sema &S, ObjCMessageExpr *Message)
 
static bool checkUnsafeAssignLiteral (Sema &S, SourceLocation Loc, Expr *RHS, bool isProperty)
 
static bool checkUnsafeAssignObject (Sema &S, SourceLocation Loc, Qualifiers::ObjCLifetime LT, Expr *RHS, bool isProperty)
 

Macro Definition Documentation

◆ ATOMIC_BUILTIN

#define ATOMIC_BUILTIN (   ID,
  TYPE,
  ATTRS 
)
Value:
case Builtin::BI##ID: \
return SemaAtomicOpsOverloaded(TheCallResult, AtomicExpr::AO##ID);

◆ BUILTIN

#define BUILTIN (   ID,
  TYPE,
  ATTRS 
)

◆ BUILTIN_ROW

#define BUILTIN_ROW (   x)
Value:
{ Builtin::BI##x##_1, Builtin::BI##x##_2, Builtin::BI##x##_4, \
Builtin::BI##x##_8, Builtin::BI##x##_16 }

Referenced by checkBuiltinArgument().

◆ GET_NEON_IMMEDIATE_CHECK

#define GET_NEON_IMMEDIATE_CHECK

◆ GET_NEON_OVERLOAD_CHECK

#define GET_NEON_OVERLOAD_CHECK

Enumeration Type Documentation

◆ AbsoluteValueKind

Enumerator
AVK_Integer 
AVK_Floating 
AVK_Complex 

Definition at line 6835 of file SemaChecking.cpp.

◆ LimitType

enum LimitType
strong

Definition at line 8586 of file SemaChecking.cpp.

◆ StringLiteralCheckType

Definition at line 4671 of file SemaChecking.cpp.

Function Documentation

◆ changeAbsFunction()

static unsigned changeAbsFunction ( unsigned  AbsKind,
AbsoluteValueKind  ValueKind 
)
static

Definition at line 6854 of file SemaChecking.cpp.

References AVK_Complex, AVK_Floating, and AVK_Integer.

◆ checkArgCount()

static bool checkArgCount ( Sema S,
CallExpr call,
unsigned  desiredArgCount 
)
static

Checks that a call expression's argument count is the desired number.

This is useful when doing custom type-checking. Returns true on error.

Definition at line 56 of file SemaChecking.cpp.

Referenced by SemaBuiltinCommitRWPipe(), SemaBuiltinPipePackets(), and SemaBuiltinReserveRWPipe().

◆ checkBuiltinArgument()

static bool checkBuiltinArgument ( Sema S,
CallExpr E,
unsigned  ArgIndex 
)
static

◆ CheckFormatString()

static void CheckFormatString ( Sema S,
const FormatStringLiteral *  FExpr,
const Expr OrigFormatExpr,
ArrayRef< const Expr *>  Args,
bool  HasVAListArg,
unsigned  format_idx,
unsigned  firstDataArg,
Sema::FormatStringType  Type,
bool  inFunctionCall,
Sema::VariadicCallType  CallType,
llvm::SmallBitVector &  CheckedVarArgs,
UncoveredArgHandler &  UncoveredArg 
)
static

◆ checkFormatStringExpr()

static StringLiteralCheckType checkFormatStringExpr ( Sema S,
const Expr E,
ArrayRef< const Expr *>  Args,
bool  HasVAListArg,
unsigned  format_idx,
unsigned  firstDataArg,
Sema::FormatStringType  Type,
Sema::VariadicCallType  CallType,
bool  InFunctionCall,
llvm::SmallBitVector &  CheckedVarArgs,
UncoveredArgHandler &  UncoveredArg,
llvm::APSInt  Offset 
)
static

◆ CheckForReference()

static bool CheckForReference ( Sema SemaRef,
const Expr E,
const PartialDiagnostic PD 
)
static

◆ CheckMemorySizeofForComparison()

static bool CheckMemorySizeofForComparison ( Sema S,
const Expr E,
IdentifierInfo FnName,
SourceLocation  FnLoc,
SourceLocation  RParenLoc 
)
static

Takes the expression passed to the size_t parameter of functions such as memcmp, strncat, etc and warns if it's a comparison.

This is to catch typos like if (memcmp(&a, &b, sizeof(a) > 0)).

Definition at line 7195 of file SemaChecking.cpp.

Referenced by getSizeOfArgType(), and getStrlenExprArg().

◆ CheckNonNullArgument()

static void CheckNonNullArgument ( Sema S,
const Expr ArgExpr,
SourceLocation  CallSiteLoc 
)
static

◆ CheckNonNullArguments()

static void CheckNonNullArguments ( Sema S,
const NamedDecl FDecl,
const FunctionProtoType Proto,
ArrayRef< const Expr *>  Args,
SourceLocation  CallSiteLoc 
)
static

◆ CheckNonNullExpr()

static bool CheckNonNullExpr ( Sema S,
const Expr Expr 
)
static

Checks if a the given expression evaluates to null.

Returns true if the value evaluates to null.

Definition at line 2466 of file SemaChecking.cpp.

References clang::Sema::Context, clang::Expr::EvaluateAsBooleanCondition(), clang::Type::getAsUnionType(), clang::Type::getNullability(), clang::Expr::getType(), clang::Expr::IgnoreImplicit(), clang::Expr::isValueDependent(), and clang::NonNull.

Referenced by CheckNonNullArgument().

◆ checkOpenCLBlockArgs()

static bool checkOpenCLBlockArgs ( Sema S,
Expr BlockArg 
)
static

OpenCL C v2.0, s6.13.17.2 - Checks that the block parameters are all local void*, which is a requirement of device side enqueue.

Definition at line 292 of file SemaChecking.cpp.

Referenced by SemaOpenCLBuiltinEnqueueKernel().

◆ checkOpenCLEnqueueIntType()

static bool checkOpenCLEnqueueIntType ( Sema S,
Expr E,
const QualType IntType 
)
static

Diagnose integer type and any valid implicit conversion to it.

Diagnose integer type and any valid implicit convertion to it.

Definition at line 9909 of file SemaChecking.cpp.

References clang::Sema::Diag(), clang::Stmt::getLocStart(), clang::Expr::getType(), and clang::Type::isIntegerType().

◆ checkOpenCLEnqueueLocalSizeArgs()

static bool checkOpenCLEnqueueLocalSizeArgs ( Sema S,
CallExpr TheCall,
unsigned  Start,
unsigned  End 
)
static

Definition at line 381 of file SemaChecking.cpp.

Referenced by checkOpenCLEnqueueVariadicArgs().

◆ checkOpenCLEnqueueVariadicArgs()

static bool checkOpenCLEnqueueVariadicArgs ( Sema S,
CallExpr TheCall,
Expr BlockArg,
unsigned  NumNonVarArgs 
)
static

◆ checkOpenCLPipeArg()

static bool checkOpenCLPipeArg ( Sema S,
CallExpr Call 
)
static

◆ checkOpenCLPipePacketType()

static bool checkOpenCLPipePacketType ( Sema S,
CallExpr Call,
unsigned  Idx 
)
static

◆ checkOpenCLSubgroupExt()

static bool checkOpenCLSubgroupExt ( Sema S,
CallExpr Call 
)
static

Definition at line 325 of file SemaChecking.cpp.

◆ CheckReturnStackAddr()

static void CheckReturnStackAddr ( Sema S,
Expr RetValExp,
QualType  lhsType,
SourceLocation  ReturnLoc 
)
static

◆ checkUnsafeAssignLiteral()

static bool checkUnsafeAssignLiteral ( Sema S,
SourceLocation  Loc,
Expr RHS,
bool  isProperty 
)
static

◆ checkUnsafeAssignObject()

static bool checkUnsafeAssignObject ( Sema S,
SourceLocation  Loc,
Qualifiers::ObjCLifetime  LT,
Expr RHS,
bool  isProperty 
)
static

◆ checkVAStartABI()

static bool checkVAStartABI ( Sema S,
unsigned  BuiltinID,
Expr Fn 
)
static

Check that the user is calling the appropriate va_start builtin for the target and calling convention.

Definition at line 3776 of file SemaChecking.cpp.

References clang::CC_C, clang::CC_Win64, clang::CC_X86_64SysV, clang::Sema::Context, clang::Sema::Diag(), clang::Sema::getCurFunctionDecl(), clang::Stmt::getLocStart(), clang::ASTContext::getTargetInfo(), and clang::TargetInfo::getTriple().

Referenced by checkVAStartIsInVariadicFunction().

◆ checkVAStartIsInVariadicFunction()

static bool checkVAStartIsInVariadicFunction ( Sema S,
Expr Fn,
ParmVarDecl **  LastParam = nullptr 
)
static

◆ considerVariable()

static bool considerVariable ( VarDecl var,
Expr ref,
RetainCycleOwner &  owner 
)
static

Consider whether capturing the given variable can possibly lead to a retain cycle.

Definition at line 11129 of file SemaChecking.cpp.

References clang::QualType::getObjCLifetime(), clang::ValueDecl::getType(), and clang::Qualifiers::OCL_Strong.

Referenced by clang::Sema::checkRetainCycles(), and findRetainCycleOwner().

◆ CXXRecordMembersNamed()

template<typename MemberKind >
static llvm::SmallPtrSet<MemberKind*, 1> CXXRecordMembersNamed ( StringRef  Name,
Sema S,
QualType  Ty 
)
static

Definition at line 5854 of file SemaChecking.cpp.

◆ diagnoseArrayStarInParamType()

static void diagnoseArrayStarInParamType ( Sema S,
QualType  PType,
SourceLocation  Loc 
)
static

◆ DiagnoseCStringFormatDirectiveInCFAPI()

static void DiagnoseCStringFormatDirectiveInCFAPI ( Sema S,
const NamedDecl FDecl,
Expr **  Args,
unsigned  NumArgs 
)
static

Diagnose use of s directive in an NSString which is being passed as formatting string to formatting method.

Definition at line 2511 of file SemaChecking.cpp.

References clang::NamedDecl::getObjCFStringFormattingFamily(), and clang::SFF_CFString.

◆ diagnoseRetainCycle()

static void diagnoseRetainCycle ( Sema S,
Expr capturer,
RetainCycleOwner &  owner 
)
static

◆ emitReplacement()

static void emitReplacement ( Sema S,
SourceLocation  Loc,
SourceRange  Range,
unsigned  AbsKind,
QualType  ArgType 
)
static

◆ EvalAddr()

static const Expr* EvalAddr ( const Expr E,
SmallVectorImpl< const DeclRefExpr * > &  refVars,
const Decl ParentDecl 
)
static

EvalAddr - EvalAddr and EvalVal are mutually recursive functions that check if the expression in a return statement evaluates to an address to a location on the stack, a local block, an address of a label, or a reference to local temporary.

The recursion is used to traverse the AST of the return expression, with recursion backtracking when we encounter a subexpression that (1) clearly does not lead to one of the above problematic expressions (2) is something we cannot determine leads to a problematic expression based on such local checking.

Both EvalAddr and EvalVal follow through reference variables to evaluate the expression that they point to. Such variables are added to the 'refVars' vector so that we know what the reference variable "trail" was.

EvalAddr processes expressions that are pointers that are used as references (and not L-values). EvalVal handles all other values. At the base case of the recursion is a check for the above problematic expressions.

This implementation handles:

  • pointer-to-pointer casts
  • implicit conversions from array references to pointers
  • taking the address of fields
  • arbitrary interplay between "&" and "*" operators
  • pointer arithmetic from an address of a stack variable
  • taking the address of an array element where the array is on the stack

Definition at line 7770 of file SemaChecking.cpp.

References clang::Stmt::getStmtClass(), clang::Expr::getType(), clang::Expr::IgnoreParens(), clang::Type::isAnyPointerType(), clang::Type::isBlockPointerType(), clang::Type::isObjCQualifiedIdType(), and clang::Expr::isTypeDependent().

Referenced by CheckReturnStackAddr().

◆ EvalVal()

static const Expr* EvalVal ( const Expr E,
SmallVectorImpl< const DeclRefExpr * > &  refVars,
const Decl ParentDecl 
)
static

EvalVal - This function is complements EvalAddr in the mutual recursion.

See the comments for EvalAddr for more details.

Definition at line 7925 of file SemaChecking.cpp.

References clang::Stmt::getStmtClass(), and clang::Expr::IgnoreParens().

Referenced by CheckReturnStackAddr().

◆ findCapturingExpr()

static Expr* findCapturingExpr ( Sema S,
Expr e,
RetainCycleOwner &  owner 
)
static

◆ findRetainCycleOwner()

static bool findRetainCycleOwner ( Sema S,
Expr e,
RetainCycleOwner &  owner 
)
static

◆ getAbsoluteValueArgumentType()

static QualType getAbsoluteValueArgumentType ( ASTContext Context,
unsigned  AbsType 
)
static

Definition at line 6794 of file SemaChecking.cpp.

◆ getAbsoluteValueFunctionKind()

static unsigned getAbsoluteValueFunctionKind ( const FunctionDecl FDecl)
static

◆ getAbsoluteValueKind()

static AbsoluteValueKind getAbsoluteValueKind ( QualType  T)
static

◆ getBestAbsFunction()

static unsigned getBestAbsFunction ( ASTContext Context,
QualType  ArgType,
unsigned  AbsFunctionKind 
)
static

Definition at line 6816 of file SemaChecking.cpp.

◆ getContainedDynamicClass()

static const CXXRecordDecl* getContainedDynamicClass ( QualType  T,
bool IsContained 
)
static

Determine whether the given type is or contains a dynamic class type (e.g., whether it has a vtable).

Definition at line 7224 of file SemaChecking.cpp.

References clang::RecordDecl::fields(), clang::Type::getAsCXXRecordDecl(), clang::Type::getBaseElementTypeUnsafe(), clang::CXXRecordDecl::getDefinition(), clang::CXXRecordDecl::isDynamicClass(), and clang::Decl::isInvalidDecl().

◆ getDeclAlign()

static CharUnits getDeclAlign ( Expr E,
CharUnits  TypeAlign,
ASTContext Context 
)
static

◆ getLargerAbsoluteValueFunction()

static unsigned getLargerAbsoluteValueFunction ( unsigned  AbsFunction)
static

Definition at line 6744 of file SemaChecking.cpp.

◆ getNeonEltType()

static QualType getNeonEltType ( NeonTypeFlags  Flags,
ASTContext Context,
bool  IsPolyUnsigned,
bool  IsInt64Long 
)
static

getNeonEltType - Return the QualType corresponding to the elements of the vector type specified by the NeonTypeFlags.

This is used to check the pointer arguments for Neon load/store intrinsics.

Definition at line 1259 of file SemaChecking.cpp.

◆ GetNSMutableArrayArgumentIndex()

static Optional<int> GetNSMutableArrayArgumentIndex ( Sema S,
ObjCMessageExpr Message 
)
static

◆ GetNSMutableDictionaryArgumentIndex()

static Optional<int> GetNSMutableDictionaryArgumentIndex ( Sema S,
ObjCMessageExpr Message 
)
static

◆ GetNSSetArgumentIndex()

static Optional<int> GetNSSetArgumentIndex ( Sema S,
ObjCMessageExpr Message 
)
static

◆ getOpenCLArgAccess()

static OpenCLAccessAttr* getOpenCLArgAccess ( const Decl D)
static

Returns OpenCL access qual.

Definition at line 559 of file SemaChecking.cpp.

References clang::Decl::getAttr().

Referenced by checkOpenCLPipeArg().

◆ getSizeOfArgType()

static QualType getSizeOfArgType ( const Expr E)
static

◆ getSizeOfExprArg()

static const Expr* getSizeOfExprArg ( const Expr E)
static

If E is a sizeof expression, returns its argument expression, otherwise returns NULL.

Definition at line 7255 of file SemaChecking.cpp.

References clang::Expr::IgnoreParenImpCasts(), and clang::UETT_SizeOf.

Referenced by getSizeOfArgType(), and getStrlenExprArg().

◆ getStrlenExprArg()

static const Expr* getStrlenExprArg ( const Expr E)
static

◆ ignoreLiteralAdditions()

static const Expr* ignoreLiteralAdditions ( const Expr Ex,
ASTContext Ctx 
)
static

◆ isBlockPointer()

static bool isBlockPointer ( Expr Arg)
inlinestatic

◆ isConstantSizeArrayWithMoreThanOneElement()

static bool isConstantSizeArrayWithMoreThanOneElement ( QualType  Ty,
ASTContext Context 
)
static

Definition at line 7475 of file SemaChecking.cpp.

Referenced by getStrlenExprArg().

◆ IsInAnyMacroBody()

static bool IsInAnyMacroBody ( const SourceManager SM,
SourceLocation  Loc 
)
static

◆ isNonNullType()

static bool isNonNullType ( ASTContext ctx,
QualType  type 
)
static

Determine whether the given type has a non-null nullability annotation.

Definition at line 2551 of file SemaChecking.cpp.

References clang::Type::getNullability(), and clang::NonNull.

◆ isSetterLikeSelector()

static bool isSetterLikeSelector ( Selector  sel)
static

Check for a keyword selector that starts with the word 'add' or 'set'.

Definition at line 11323 of file SemaChecking.cpp.

References clang::Selector::getNameForSlot(), clang::Selector::getNumArgs(), clang::isLowercase(), and clang::Selector::isUnarySelector().

Referenced by clang::Sema::checkRetainCycles().

◆ IsStdFunction()

template<std::size_t StrLen>
static bool IsStdFunction ( const FunctionDecl FDecl,
const char(&)  Str[StrLen] 
)
static

◆ IsTailPaddedMemberArray()

static bool IsTailPaddedMemberArray ( Sema S,
const llvm::APInt &  Size,
const NamedDecl ND 
)
static

Check whether this array fits the idiom of a size-one tail padded array member of a struct.

We avoid emitting out-of-bounds access warnings for such arrays as they are commonly used to emulate flexible arrays in C89 code.

Definition at line 10895 of file SemaChecking.cpp.

◆ isValidOrderingForOp()

static bool isValidOrderingForOp ( int64_t  Ordering,
AtomicExpr::AtomicOp  Op 
)
static

◆ referToTheSameDecl()

static bool referToTheSameDecl ( const Expr E1,
const Expr E2 
)
static

Check if two expressions refer to the same declaration.

Definition at line 7558 of file SemaChecking.cpp.

Referenced by getStrlenExprArg().

◆ requiresParensToAddCast()

static bool requiresParensToAddCast ( const Expr E)
static

◆ RFT()

static unsigned RFT ( unsigned  t,
bool  shift = false,
bool  ForceQuad = false 
)
static

◆ SemaBuiltinAddressof()

static bool SemaBuiltinAddressof ( Sema S,
CallExpr TheCall 
)
static

Check that the argument to __builtin_addressof is a glvalue, and set the result type to the corresponding pointer type.

Definition at line 126 of file SemaChecking.cpp.

◆ SemaBuiltinAnnotation()

static bool SemaBuiltinAnnotation ( Sema S,
CallExpr TheCall 
)
static

Check that the first argument to __builtin_annotation is an integer and the second argument is a non-wide string literal.

Definition at line 76 of file SemaChecking.cpp.

◆ SemaBuiltinCallWithStaticChain()

static bool SemaBuiltinCallWithStaticChain ( Sema S,
CallExpr BuiltinCall 
)
static

Definition at line 201 of file SemaChecking.cpp.

◆ SemaBuiltinCommitRWPipe()

static bool SemaBuiltinCommitRWPipe ( Sema S,
CallExpr Call 
)
static

◆ SemaBuiltinCpuIs()

static bool SemaBuiltinCpuIs ( Sema S,
CallExpr TheCall 
)
static

SemaBuiltinCpuIs - Handle __builtin_cpu_is(char *).

This checks that the target supports __builtin_cpu_is and that the string argument is constant and valid.

Definition at line 1876 of file SemaChecking.cpp.

References clang::Sema::Context, Diag(), clang::Sema::Diag(), clang::CallExpr::getArg(), clang::CallExpr::getLocStart(), clang::Stmt::getSourceRange(), clang::ASTContext::getTargetInfo(), clang::Expr::IgnoreParenImpCasts(), clang::Expr::isTypeDependent(), clang::Expr::isValueDependent(), SemaBuiltinCpuSupports(), and clang::TargetInfo::validateCpuIs().

◆ SemaBuiltinCpuSupports()

static bool SemaBuiltinCpuSupports ( Sema S,
CallExpr TheCall 
)
static

SemaBuiltinCpuSupports - Handle __builtin_cpu_supports(char *).

This checks that the target supports __builtin_cpu_supports and that the string argument is constant and valid.

Definition at line 1856 of file SemaChecking.cpp.

References clang::Sema::Context, clang::Sema::Diag(), clang::CallExpr::getArg(), clang::CallExpr::getLocStart(), clang::Stmt::getSourceRange(), clang::ASTContext::getTargetInfo(), clang::Expr::IgnoreParenImpCasts(), and clang::TargetInfo::validateCpuSupports().

Referenced by SemaBuiltinCpuIs().

◆ SemaBuiltinMemChkCall()

static void SemaBuiltinMemChkCall ( Sema S,
FunctionDecl FDecl,
CallExpr TheCall,
unsigned  SizeIdx,
unsigned  DstSizeIdx 
)
static

Definition at line 173 of file SemaChecking.cpp.

◆ SemaBuiltinMSVCAnnotation()

static bool SemaBuiltinMSVCAnnotation ( Sema S,
CallExpr TheCall 
)
static

Definition at line 102 of file SemaChecking.cpp.

◆ SemaBuiltinOverflow()

static bool SemaBuiltinOverflow ( Sema S,
CallExpr TheCall 
)
static

Definition at line 140 of file SemaChecking.cpp.

◆ SemaBuiltinPipePackets()

static bool SemaBuiltinPipePackets ( Sema S,
CallExpr Call 
)
static

◆ SemaBuiltinReserveRWPipe()

static bool SemaBuiltinReserveRWPipe ( Sema S,
CallExpr Call 
)
static

◆ SemaBuiltinRWPipe()

static bool SemaBuiltinRWPipe ( Sema S,
CallExpr Call 
)
static

◆ SemaBuiltinSEHScopeCheck()

static bool SemaBuiltinSEHScopeCheck ( Sema SemaRef,
CallExpr TheCall,
Scope::ScopeFlags  NeededScopeFlags,
unsigned  DiagID 
)
static

Definition at line 264 of file SemaChecking.cpp.

References clang::Sema::inTemplateInstantiation().

◆ SemaOpenCLBuiltinEnqueueKernel()

static bool SemaOpenCLBuiltinEnqueueKernel ( Sema S,
CallExpr TheCall 
)
static

OpenCL C v2.0, s6.13.17 - Enqueue kernel function contains four different overload formats specified in Table 6.13.17.1.

int enqueue_kernel(queue_t queue, kernel_enqueue_flags_t flags, const ndrange_t ndrange, void (^block)(void)) int enqueue_kernel(queue_t queue, kernel_enqueue_flags_t flags, const ndrange_t ndrange, uint num_events_in_wait_list, clk_event_t event_wait_list, clk_event_t *event_ret, void (^block)(void)) int enqueue_kernel(queue_t queue, kernel_enqueue_flags_t flags, const ndrange_t ndrange, void (^block)(local void, ...), uint size0, ...) int enqueue_kernel(queue_t queue, kernel_enqueue_flags_t flags, const ndrange_t ndrange, uint num_events_in_wait_list, clk_event_t event_wait_list, clk_event_t *event_ret, void (^block)(local void, ...), uint size0, ...)

Definition at line 440 of file SemaChecking.cpp.

References checkOpenCLBlockArgs(), checkOpenCLEnqueueVariadicArgs(), clang::Sema::Context, clang::Sema::Diag(), clang::CallExpr::getArg(), clang::Type::getAs(), clang::QualType::getAsString(), clang::QualType::getCanonicalType(), clang::CallExpr::getDirectCallee(), clang::Stmt::getLocStart(), clang::CallExpr::getLocStart(), clang::CallExpr::getNumArgs(), clang::Type::getPointeeOrArrayElementType(), clang::Type::getPointeeType(), clang::BlockPointerType::getPointeeType(), clang::ASTContext::getPointerType(), clang::Expr::getType(), clang::QualType::getUnqualifiedType(), isBlockPointer(), clang::Type::isClkEventT(), clang::Type::isIntegerType(), clang::Expr::isNullPointerConstant(), clang::Type::isPointerType(), clang::Type::isQueueT(), clang::Expr::NPC_ValueDependentIsNotNull, clang::ASTContext::OCLClkEventTy, and clang::ASTContext::OCLQueueTy.

◆ SemaOpenCLBuiltinKernelWorkGroupSize()

static bool SemaOpenCLBuiltinKernelWorkGroupSize ( Sema S,
CallExpr TheCall 
)
static

OpenCL C v2.0, s6.13.17.6 - Check the argument to the get_kernel_work_group_size and get_kernel_preferred_work_group_size_multiple builtin functions.

Definition at line 363 of file SemaChecking.cpp.

◆ SemaOpenCLBuiltinNDRangeAndBlock()

static bool SemaOpenCLBuiltinNDRangeAndBlock ( Sema S,
CallExpr TheCall 
)
static

Definition at line 334 of file SemaChecking.cpp.

◆ SemaOpenCLBuiltinToAddr()

static bool SemaOpenCLBuiltinToAddr ( Sema S,
unsigned  BuiltinID,
CallExpr Call 
)
static

◆ shouldNotPrintDirectly()

static std::pair<QualType, StringRef> shouldNotPrintDirectly ( const ASTContext Context,
QualType  IntendedTy,
const Expr E 
)
static

Definition at line 6163 of file SemaChecking.cpp.

◆ sumOffsets()

static void sumOffsets ( llvm::APSInt &  Offset,
llvm::APSInt  Addend,
BinaryOperatorKind  BinOpKind,
bool  AddendIsRight 
)
static