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New posts in undefined-behavior

AppBarLayout strange behavior when changing visibility of some views in it

android undefined-behavior android-coordinatorlayout android-appbarlayout

C language alphanumeric check for bad chars

c char clang undefined-behavior

Is foo(i++) + foo(i++) undefined in ANSI C?

c undefined-behavior sequence-points

"Materializing" an object of a known type for C++ type inference

c++ c++11 undefined-behavior type-inference

Is Insertion into a vector while also accessing a vector undefined behavior?

c++ std undefined-behavior

Signed int overflow-underflow cause undefined behaviour but how does the compiler anticipate this?

c++ undefined-behavior integer-overflow

Why is the behaviour of this code undefined in C?

c undefined-behavior

Unexpected results when using printf

c type-conversion printf undefined-behavior

Are multidimensional array accesses sequenced?

arrays c multidimensional-array undefined-behavior order-of-execution

Reference list element then popping it, is it undefined behaviour?

c++ language-lawyer undefined-behavior

Is it safe to call `.as_ref()` or `.as_mut()` on `NonNull<[u8]>` from `Allocator::allocate()` before initialization? (Rust `allocator_api`)

rust undefined-behavior

Is difference between two pointers pointing to the same deallocated array well-defined in C?

c pointers language-lawyer undefined-behavior

Why is my compiler "optimizing" this for loop into an infinite loop when compiled with -O3 in C++

c++ compiler-errors infinite-loop compiler-optimization undefined-behavior

Java thinks C:\ drive is hidden?

java file undefined-behavior

Compound literal is created once for a given scope

c language-lawyer undefined-behavior compound-literals

Is it legal to cast a repr(C) struct pointer to pointer to its first field?

rust language-lawyer undefined-behavior

Any reason why 0.0/0.0 makes negative nan in C++?

c++ nan undefined-behavior

Is passing pointer to an array as pointer to pointer UB in C?

c pointers language-lawyer undefined-behavior implicit-conversion

Is it undefined behavior to access an array out of bounds if I know what data is at the accessed adress?

c++ stack undefined-behavior
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