Currently Visual C++ is shipped with run开发者_如何转开发time where malloc() is decorated with __declspec( restrict ).
Having recently read that the main reason why fo开发者_运维技巧rtran is faster than c/c++ in numerical computations is because there is no pointer aliasing.
Does the following code invoke undefined behavior (due to aliasing violation or otherwise)? int foo(int (*a)[10], int (*b)[5])
开发者_JAVA技巧How do you deal with aliasing in Java? A simple solution is to make a copy of let\'s say an ArrayList but when i try to write the code my data keeps being overwritten by newly added dat
I have the following code that works as expected: a = [1, 2, 3, 4] b = a >>> b is a True if I change it up a little it still works:
g++ does implement __restrict__ for pointers, but I could not find anything about itera开发者_StackOverflow中文版tors. My overall intent is to encourage the compiler to vectorize stl loops.
I had a discussion with someone on IRC and this question turned up. We are allowed by the Standard to change an object of type int by a char lvalue.
Suppose I have these classes: struct Engine { int engine_data; }; struct Car { shared_ptr<Engine> engine;
I\'ve got some code that I\'ve been using successfully for some years to implement a \"variant-type object\"; that is, a C++ object that can hold a values of various types, but only uses (approximatel
what is the diffe开发者_运维知识库rence between \"Strict\", \"Typed\", \"Restricted\" and \"Disjointed\" aliasing?In \"Strict aliasing\", pointers don\'t alias if they are different types.
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