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c++ Programming Glossary: dereferencehttp://stackoverflow.com/questions/2346806/what-is-segmentation-fault languages such as C . A common way to get a segfault is to dereference a null pointer int p NULL p 1 Another segfault happens when.. ceased to exist after the block ended. And when you try to dereference dangling pointer like p 'A' you would probably get a segfault...
When does invoking a member function on a null instance result in undefined behavior? http://stackoverflow.com/questions/2474018/when-does-invoking-a-member-function-on-a-null-instance-result-in-undefined-beha crash because the this pointer is never used. Because b dereferences the this pointer this .x 5 and this is null the program enters.. thing to understand is why it's undefined behavior to dereference a null pointer. In C 03 there's actually a bit of ambiguity.. defined. This is an active issue . So we have a strict dereference a null pointer get undefined behavior view and a weak use a..
http://stackoverflow.com/questions/2712076/how-to-use-an-iterator a pointer to an object an iterator points to you'd have to dereference the iterator which gives a reference to the object and take..
How does dereferencing of a function pointer happen? http://stackoverflow.com/questions/2795575/how-does-dereferencing-of-a-function-pointer-happen void hello From a comment over here function pointers dereference just fine but the resulting function designator will be immediately.. be a DATA memory. Function pointer isn't suppose to be dereferenced in that way. Instead it is called. I would use a name dereference.. in that way. Instead it is called. I would use a name dereference side by side with call . It's OK. Anyway C is designed in such..
http://stackoverflow.com/questions/356950/c-functors-and-their-uses some fairly complex global optimizations it'd have to dereference the pointer at runtime and then make the call. share improve..
http://stackoverflow.com/questions/4421706/operator-overloading or smart pointers you have to overload the unary prefix dereference operator and the binary infix pointer member access operator..
C++ : Catch a divide by zero error http://stackoverflow.com/questions/4747934/c-catch-a-divide-by-zero-error It's the same type of error which appears when you dereference a null pointer then your program crashes by SIGSEGV signal segmentation.. or log an error after a division by zero or a null pointer dereference... but unlike exceptions that's NOT a way to control your program's..
http://stackoverflow.com/questions/4810664/how-do-i-use-arrays-in-c to the non existent n th element but it is illegal to dereference that pointer .... x . int 8 .... ^ ^ x 0 x 8..
When to use forward declaration? http://stackoverflow.com/questions/553682/when-to-use-forward-declaration compiler error Use its methods or fields in fact trying to dereference a variable with incomplete type class Foo X m void method ..
What are the differences between pointer variable and reference variable in C++? http://stackoverflow.com/questions/57483/what-are-the-differences-between-pointer-variable-and-reference-variable-in-c is that the pointer points to. A pointer needs to be dereferenced with to access the memory location it points to whereas a reference.. const int x int 12 legal C int y int 12 illegal to dereference a temporary. This makes const safer for use in argument lists..
Accessing class members on a NULL pointer http://stackoverflow.com/questions/669742/accessing-class-members-on-a-null-pointer bullet of dereferencing a null pointer because you never dereference one. Formally calling any function even a non virtual one on..
http://stackoverflow.com/questions/988158/take-the-address-of-a-one-past-the-end-array-element-via-subscript-legal-by-the to exist which means you're obviously not allowed to dereference it either. Here's what the standard has to say on the subject.. note Which seems to me to imply that yes you can legally dereference it but the result of reading or writing to the location is unspecified... the last part of your question array 5 doesn't actually dereference anything it simply creates a pointer to one past the end of..
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