undefined-behavior

相关标签：javascript jquery android 多少钱 iPhone

Where exactly does C++ standard say dereferencing an uninitialized pointer is undefined behavior?

So far I can\'t find how to deduce that the following: int* ptr; *ptr = 0; is undefined behavior. First of all, there\'s 5.3.1/1 that states that * means indirection which converts T* to T. But th[详细]

2023-01-26 21:32 分类：问答
Undefined behavior and sequence points

What are "sequence points"? What is the relation between undefined behaviour and sequence points?[详细]

2023-01-25 03:17 分类：问答
const member and assignment operator. How to avoid the undefined behavior?

I answered the question about std::vector of objects and const-correctness, and received a comment about undefined behavior. I do not agree and therefore I have a question.[详细]

2023-01-24 00:39 分类：问答
Why is this Undefined Behavior?

Why does the following gi开发者_开发技巧ven expression invoke undefined behavior? int i = 5; i = (i,i++,i) + 1[详细]

2023-01-23 21:24 分类：问答
What is undefined behavior?

Merged with 开发者_Go百科Undefined, unspecified and implementation-defined behavior. What is this undefined behavior thing that I keep reading about? Why would demons fly out of my nose?[详细]

2023-01-23 10:11 分类：问答
Is `x-- > 0 && array[x]` well-defined behavior in C++?

Can I use x on both sides of a boolean expression when I post-increment it on the left side? The line in question is:[详细]

2023-01-22 15:34 分类：问答
How to implement memmove in standard C without an intermediate copy?

From the man page on my system: void *memmove(void *dst, const void *src, size_t len); DESCRIPTION The memmove() function copies len bytes from string src to string dst.[详细]

2023-01-22 05:17 分类：问答
Detecting signed overflow in C/C++

At first glance, this question may seem like a duplicate of How to detect integer overflow?, however it is actually significantly different.[详细]

2023-01-20 07:43 分类：问答
Confusion in C program

Is the given program well defined? #include <stdio.h> int main() { int a=2,*f1,*f2; f1=f2=&a开发者_Python百科;[详细]

2023-01-17 22:08 分类：问答
Why does left shift operation invoke Undefined Behaviour when the left side operand has negative value?

In C bitwise left shift operation invokes Undefined Behaviour when the left side operand has negative value.[详细]

2023-01-17 15:32 分类：问答