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New posts in undefined-behavior

When are type-punned pointers safe in practice?

c++ undefined-behavior strict-aliasing

About aligned storage and trivially copyable/destructible types

c++ language-lawyer c++17 undefined-behavior

C++ Union Member Access And Undefined Behaviour

c++ language-lawyer undefined-behavior unions

Is modifying an object more than once in an expression through its name and through its reference well-defined?

c++ reference c++17 undefined-behavior

Implicit declaration in C

c c99 undefined-behavior language-lawyer implicit-declaration

Is casting a struct T* to a struct C* undefined behavior, if T's first field is a C?

c undefined-behavior speex

What does "*((char*)-1) = 'x';" code mean?

c redis undefined-behavior

Can assignment from a const_iterator dereference cause undefined behaviour?

c++ pointers pass-by-reference undefined-behavior const-iterator

Could accessing array element outside boundary corrupt it

c++ arrays undefined-behavior

Writing to a field in a MaybeUninit structure?

rust initialization undefined-behavior unsafe

Is undefined behavior possible in safe Rust?

rust undefined-behavior unsafe standard-library

Undefined Behavior when using Comma Operator in C++

c++ c++11 c++17 undefined-behavior expression-evaluation

What does 'prior value shall be accessed only to determine the value to be stored' mean?

c++ undefined-behavior

JavaScript bitwise undefined pitfalls?

javascript undefined bit-manipulation undefined-behavior

Is it still legal to do pointer arithmetic on a deleted array?

c++ c++11 language-lawyer undefined-behavior pointer-arithmetic

sem_post, signal handlers, and undefined behavior

c signals posix semaphore undefined-behavior

Testing Undefined Behavior

c++ testing undefined-behavior

Does this invoke undefined behaviour?

c undefined-behavior

Why is 'control reaches end of non-void function' only a warning? Is it legal? [duplicate]

c++ return-value compiler-warnings undefined-behavior

Accessing the same memory location twice, UB or not?

c language-lawyer undefined-behavior
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