clang  14.0.0git
Functions
CastSizeChecker.cpp File Reference
#include "clang/AST/CharUnits.h"
#include "clang/StaticAnalyzer/Checkers/BuiltinCheckerRegistration.h"
#include "clang/StaticAnalyzer/Core/BugReporter/BugType.h"
#include "clang/StaticAnalyzer/Core/Checker.h"
#include "clang/StaticAnalyzer/Core/CheckerManager.h"
#include "clang/StaticAnalyzer/Core/PathSensitive/CheckerContext.h"
#include "clang/StaticAnalyzer/Core/PathSensitive/DynamicExtent.h"
Include dependency graph for CastSizeChecker.cpp:

Go to the source code of this file.

Functions

static bool evenFlexibleArraySize (ASTContext &Ctx, CharUnits RegionSize, CharUnits TypeSize, QualType ToPointeeTy)
 Check if we are casting to a struct with a flexible array at the end. More...
 

Function Documentation

◆ evenFlexibleArraySize()

static bool evenFlexibleArraySize ( ASTContext Ctx,
CharUnits  RegionSize,
CharUnits  TypeSize,
QualType  ToPointeeTy 
)
static

Check if we are casting to a struct with a flexible array at the end.

struct foo {
size_t len;
struct bar data[];
};

or

struct foo {
size_t len;
struct bar data[0];
}

In these cases it is also valid to allocate size of struct foo + a multiple of struct bar.

Definition at line 50 of file CastSizeChecker.cpp.

References End, clang::RecordDecl::field_begin(), clang::RecordDecl::field_end(), clang::Type::getAs(), clang::ASTContext::getAsConstantArrayType(), clang::RecordType::getDecl(), clang::ASTContext::getTypeSizeInChars(), clang::RecordDecl::hasFlexibleArrayMember(), clang::CharUnits::isNegative(), clang::CharUnits::isZero(), and clang::Last.