A function pointer, also called a subroutine pointer or procedure pointer, is a pointer referencing executable code, rather than data. Dereferencing the...

not between a function pointer and an object pointer). A special pointer type called the “void pointer” allows pointing to any (non-function) object, but...

virtual function (or method), most compilers add a hidden member variable to the class that points to an array of pointers to (virtual) functions called...

provide a pointer to a method with a similar syntax to a function pointer. Standard C allows writing a typedef for a pointer to a function type using...

a pointer to a function that returns an integer and takes as arguments a float followed by an integer. When a function returns a function pointer, it...

addition to the function itself a pointer to it can be exported. Since a pointer to a function pointer is itself an object pointer, this pointer can always...

used here Function pointers are invoked by name just like normal function calls. Function pointers are separate from pointers and void pointers. The aforementioned...

Programming languages support callbacks in different ways such as function pointers, lambda expressions and blocks. To aid understanding the concept,...

Dangling pointers and wild pointers in computer programming are pointers that do not point to a valid object of the appropriate type. These are special...

int **a_p is a pointer to a pointer to an int, which is the address of the pointer p defined in the main function in this case. Function parameters of...

of a function object is in writing callback functions. A callback in procedural languages, such as C, may be performed by using function pointers. However...

be passed as input parameters of functions that expect a function pointer: // A function which takes a function pointer as an argument and calls it with...

return 0; } The qsort function from the C standard library uses a function pointer to emulate the behavior of a higher-order function. Macros can also be...

addition, a (non-static) member-function can be declared as const. In this case, the this pointer inside such a function is of type object_type const *...

the shellcode. Once the function returns, execution will resume at the attacker's shellcode; By overwriting a function pointer or exception handler to...

to function, function-to-pointer conversion does not take place (see f_func above), but it does take place when initializing a reference to function pointer:...

This can be achieved by mechanisms such as the native function pointer, the first-class function, classes or class instances in object-oriented programming...

universal or top type. A program can convert a pointer to any type of data (except a function pointer) to a pointer to void and back to the original type without...

pointer. At function return, the stack pointer is instead restored to the frame pointer, the value of the stack pointer just before the function was called...

be passed as input parameters of functions that expect a function pointer: // A function which takes a function pointer as an argument and calls it with...

metadata) and uses the resulting pointer exchange to overwrite a program function pointer. For example, on older versions of Linux, two buffers allocated next...

be a lookup table containing a range of possible input values and a function pointer to the section of code to process that input. Multiple conditions can...

statement. Functions: Function return values can be ignored, when not needed. Function and data pointers permit ad hoc run-time polymorphism. Functions may not...

method table" but essentially performing exactly the same purpose. This pointer function method can result in saving one machine instruction, and avoids the...

manner as a function pointer. The block may be assigned to variables, passed to functions, and otherwise treated like a normal function pointer, although...

3, 4, 5] If functions are represented with bare function pointers, we can not know anymore how the value that is outside of the function's body should...

In computer science, a smart pointer is an abstract data type that simulates a pointer while providing added features, such as automatic memory management...

function. The function pointer is then simply the address of the trampoline. This avoids having to use "fat" function pointers for nested functions which...

such a reference or pointer can be bound (linked) either "early" (by the compiler), according to the declared type of the pointer or reference, or "late"...

if the architecture has a base pointer (also known as frame pointer) and a stack pointer: Pushes current base pointer onto the stack, so it can be restored...