CodeQL library for C/C++

codeql/cpp-all 6.1.4-dev (changelog, source)

Module Dereferenced

Provides predicates for detecting whether an expression dereferences a pointer.

Import path

import semmle.code.cpp.controlflow.Dereferenced

Imports

ArrayFunction	Provides an abstract class for accurate modeling of input and output buffers in library functions when source code is not available. To use this QL library, create a QL class extending `ArrayFunction` with a characteristic predicate that selects the function or set of functions you are trying to model. Within that class, override the predicates provided by `ArrayFunction` to match the flow within that function. Finally, add a private import statement to `Models.qll`
Nullness	Provides classes and predicates for working with null values and checks for nullness.
cpp	Provides classes and predicates for working with C/C++ code.

Predicates

callDereferences	Holds if the call `fc` will dereference argument `i`.
dereferenced	Holds if `e` will be dereferenced after being evaluated.
dereferencedByOperation	Holds if evaluation of `op` dereferences `e`.
directDereferencedByOperation	Holds if evaluation of `op` dereferences `e` directly.
functionDereferences	Holds if the body of a function `f` is likely to dereference its `i`th parameter unconditionally. This analysis does not account for reassignment.