undefined-behavior

英文: What optimizations are possible when loop variable is undefined on overflow? 问题 这篇文章介绍了一段C代码示例，编...

英文: Trying to understand --x vs x-- in C++ 问题 我正在尝试评估这个问题，尽管它很简单，但我似乎无法理解。我得到的答案是16，但提供的答案是12。我不明白这怎...

英文: What are the 5bits and the 6bits in when bit shifting by the size of the integer? 问题 在这篇文章中，提到了关...

英文: Is decrement of bool variable defined in С? 问题 这个问题涉及到C语言。假设我们有如下代码： bool a = false; a++; printf...

英文: Cast a pointer to unsigned to signed in Rust, is it UB? 问题 基本上，我的问题是以下的Rust代码是否会导致未定义行为： ```rust...

英文: Is passing pointer to an array as pointer to pointer UB in C? 问题 这是您提供的代码： #include <stdlib.h...

英文: Get an n-bit mask avoiding UB when n is equal to the bit width of the type? 问题 我有一个小的正整数 n，并且我使用...

英文: Why do I get the "correct" output despite accessing an object that went ouf of scope? ...

英文: Where in the standard to I read or deduce that vector<T>::operator[] invokes UB for out-of...

英文: Must lvalues of type T identify objects of type T? If `p` has type `T *`, does `&*p` require...