New posts in undefined-behavior

Is right shift undefined behavior if the count is larger than the width of the type?

How did I get a value larger than 8 bits in size from an 8-bit integer?

How to explain undefined behavior to know-it-all newbies?

C++ compilation bug?

Transmute struct into array in Rust

Why is out-of-bounds pointer arithmetic undefined behaviour?

Difference between Undefined Behavior and Ill-formed, no diagnostic message required

Why does the enhanced GCC 6 optimizer break practical C++ code?

Why should I not try to use "this" value after "delete this"?

In practice, why would different compilers compute different values of int x = ++i + ++i;?

Why do I get different results from C code running in gcc and Visual Studio running it

Why dereferencing a null pointer is undefined behaviour?

How is a variable at the same address producing 2 different values? [duplicate]

Is accessing a global array outside its bound undefined behavior?

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

What's a proper way of type-punning a float to an int and vice-versa?

Why do constant expressions have an exclusion for undefined behavior?

Why does integer overflow on x86 with GCC cause an infinite loop?

How could pairing new[] with delete possibly lead to memory leak only?

Multithreading program stuck in optimized mode but runs normally in -O0