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c++ Programming Glossary: dereferencingWhy aren't my include guards preventing recursive inclusion and multiple symbol definitions? http://stackoverflow.com/questions/14909997/why-arent-my-include-guards-preventing-recursive-inclusion-and-multiple-symbol in any other context where incomplete types are acceptable dereferencing pointers to A for instance to invoke a member function or computing..
Undefined, unspecified and implementation-defined behavior http://stackoverflow.com/questions/2397984/undefined-unspecified-and-implementation-defined-behavior behavior include accessing an array beyond its bounds dereferencing the null pointer or writing allegedly clever expressions like.. Standard as undefined for example the effect of dereferencing the null pointer . Note this International Standard imposes..
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 and this is null the program enters undefined behavior as dereferencing null is always said to be undefined behavior. Does a result.. In C 03 there's actually a bit of ambiguity here. Although dereferencing a null pointer results in undefined behavior is mentioned in.. §3.10 2 An lvalue refers to an object or function. When dereferencing the result is an lvalue. A null pointer does not refer to an..
C++ standard: dereferencing NULL pointer to get a reference? http://stackoverflow.com/questions/2727834/c-standard-dereferencing-null-pointer-to-get-a-reference standard dereferencing NULL pointer to get a reference I'm wondering about what the.. defined in the standard Under different circumstances a dereferencing of a NULL pointer should result in a crash but here I'm dereferencing.. of a NULL pointer should result in a crash but here I'm dereferencing it to get a reference which is implemented by the compiler as..
How does dereferencing of a function pointer happen? http://stackoverflow.com/questions/2795575/how-does-dereferencing-of-a-function-pointer-happen does dereferencing of a function pointer happen Why and how does dereferencing.. of a function pointer happen Why and how does dereferencing a function pointer just do nothing This is what I am talking.. either on an identifier or variable. How exactly does dereferencing of a function pointer work c c pointers function pointers ..
dereferencing the null pointer http://stackoverflow.com/questions/2896689/dereferencing-the-null-pointer the null pointer int p 0 int q p Is this undefined behavior..
Why does C++ support memberwise assignment of arrays within structs, but not generally? http://stackoverflow.com/questions/3437110/why-does-c-support-memberwise-assignment-of-arrays-within-structs-but-not-gen region of 10 words of memory. B already used for pointer dereferencing and had the short hand notation V i meant V i just as in C C..
Using arrays or std::vectors in C++, what's the performance gap? http://stackoverflow.com/questions/381621/using-arrays-or-stdvectors-in-c-whats-the-performance-gap Comparison of assembly code generated for basic indexing dereferencing and increment operations on vectors and arrays pointers. Assembly.. Dereferencing a vector iterator is the same damn thing as dereferencing a pointer. void pointer_increment S s s.p addq 4 32 rdi ret..
http://stackoverflow.com/questions/3960954/c-multicharacter-literal which no reasonable behavior is required. An example is dereferencing a pointer with the value zero. Avoid undefined behavior. See..
http://stackoverflow.com/questions/4810664/how-do-i-use-arrays-in-c p i yields a pointer to the i th element of the array. By dereferencing that pointer afterwards one can access individual elements std..
Accessing class members on a NULL pointer http://stackoverflow.com/questions/669742/accessing-class-members-on-a-null-pointer by its this argument you effectively dodge the bullet of dereferencing a null pointer because you never dereference one. Formally calling..
Why does the use of 'new' cause memory leaks? http://stackoverflow.com/questions/8839943/why-does-the-use-of-new-cause-memory-leaks to clean it up However your second example is worse you're dereferencing the pointer and making a copy of the object. This way you lose..
http://stackoverflow.com/questions/988158/take-the-address-of-a-one-past-the-end-array-element-via-subscript-legal-by-the but the standard as far as I can see says nothing about dereferencing it. The closest I can find is 3.9.2 3 Note for instance the..
dereferencing a pointer when passing by reference http://stackoverflow.com/questions/11347111/dereferencing-a-pointer-when-passing-by-reference c pointers reference share improve this question Dereferencing the pointer doesn't create a copy it creates an lvalue that..
Why does explicitly calling operator<< on std::cout cause unexpected output? http://stackoverflow.com/questions/14015824/why-does-explicitly-calling-operator-on-stdcout-cause-unexpected-output pointer explicitly to a member operator of std ostream . Dereferencing the results of a the operator doesn't work The operators return..
How to catch the null pointer exception? http://stackoverflow.com/questions/1823721/how-to-catch-the-null-pointer-exception dynamic_cast etc . There are no other exceptions in C . Dereferencing null pointers division by zero etc. does not generate exceptions..
C++ standard: dereferencing NULL pointer to get a reference? http://stackoverflow.com/questions/2727834/c-standard-dereferencing-null-pointer-to-get-a-reference c pointers reference null share improve this question Dereferencing a NULL pointer is undefined behavior. In fact the standard calls..
How do explicit template instantiations affect what the linker can find? http://stackoverflow.com/questions/2735417/how-do-explicit-template-instantiations-affect-what-the-linker-can-find
How does dereferencing of a function pointer happen? http://stackoverflow.com/questions/2795575/how-does-dereferencing-of-a-function-pointer-happen back to a function pointer And from an answer here Dereferencing in way you think a function's pointer means accessing a CODE.. pointer to the element type not to a pointer to the array. Dereferencing it will therefore give you an element not an array and the madness..
This code appears to achieve the return of a null reference in C++ http://stackoverflow.com/questions/2894891/this-code-appears-to-achieve-the-return-of-a-null-reference-in-c this null pointer is then dereferenced using the unary . Dereferencing a null pointer results in undefined behavior so your program..
What are all the common undefined behaviour that a C++ programmer should know about? [closed] http://stackoverflow.com/questions/367633/what-are-all-the-common-undefined-behaviour-that-a-c-programmer-should-know-ab behavior c faq share improve this question Pointer Dereferencing a NULL pointer Dereferencing a pointer returned by a new allocation.. this question Pointer Dereferencing a NULL pointer Dereferencing a pointer returned by a new allocation of size zero Using pointers.. for instance stack allocated objects or deleted objects Dereferencing a pointer that has not yet been definitely initialized Performing..
Using arrays or std::vectors in C++, what's the performance gap? http://stackoverflow.com/questions/381621/using-arrays-or-stdvectors-in-c-whats-the-performance-gap S s return s.i movq 40 rdi rax movl rax eax ret Conclusion Dereferencing a vector iterator is the same damn thing as dereferencing a..
How expensive is it to dereference a pointer in C++? http://stackoverflow.com/questions/431469/how-expensive-is-it-to-dereference-a-pointer-in-c c pointers time complexity share improve this question Dereferencing when translated into machine code can mean different things..
Accessing static member through invalid pointer: guaranteed to “work”? http://stackoverflow.com/questions/5248877/accessing-static-member-through-invalid-pointer-guaranteed-to-work code T ptr NULL std cout ptr x remember x is static Dereferencing ptr is invalid as stated above. Even though no physical memory..
Assigning a reference by dereferencing a NULL pointer http://stackoverflow.com/questions/6716091/assigning-a-reference-by-dereferencing-a-null-pointer behavior null pointer share improve this question Dereferencing a null pointer is Undefined Behavior . An Undefined Behavior..
Dereferencing an invalid pointer, then taking the address of the result http://stackoverflow.com/questions/7346634/dereferencing-an-invalid-pointer-then-taking-the-address-of-the-result an invalid pointer then taking the address of the result Consider..
Uses for multiple levels of pointer dereferences? http://stackoverflow.com/questions/758673/uses-for-multiple-levels-of-pointer-dereferences At the address pointed to by that is a third pointer. Dereferencing the third pointer results in a char. If that's all there is..
Deleting a heap then dereferencing a pointer to that memory http://stackoverflow.com/questions/927945/deleting-a-heap-then-dereferencing-a-pointer-to-that-memory c pointers delete heap share improve this question Dereferencing an invalid pointer leads to undefined results per spec. It's..
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