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New posts in undefined-behavior

Sequence point && operator

c++ undefined-behavior c++03 operator-precedence sequence-points

Understanding implicit lifetime creation and aliasing in C++

c++ clang language-lawyer undefined-behavior type-punning

Can you overwrite the memory of a union, if no members are active?

c++ language-lawyer undefined-behavior unions c++23

Why does the clang sanitizer think this left shift of an unsigned number is undefined?

c++ undefined-behavior sanitizer

Is it defined behaviour to assign to function call in or in if (C++17)

c++ c++17 undefined-behavior

why would the optimization ignore the if statement when function has warning [-Wreturn-type]?

c++ assembly optimization compiler-optimization undefined-behavior

How does clang manage to compile this code with undefined behavior into this machine code?

c++ compilation clang compiler-optimization undefined-behavior

Is pointer arithmetic still well defined after casting with alignment violation?

c undefined-behavior memory-alignment c11 pointer-arithmetic

If I decrement `std::size_t(0)` is that guaranteed to be equal to `std::size_t(-1)`?

c++ undefined-behavior integer-overflow unsigned-integer

Is a program where undefined behavior (UB) is conditional on implementation leeway a program with unconditional UB?

c++ language-lawyer undefined-behavior

Is assigning a number too big to be represented in a bit field undefined behaviour

c segmentation-fault undefined-behavior bit-fields

Storing Zero-Sized type instance into a null pointer

pointers rust undefined-behavior unsafe

Can clang warn about undefined behavior at compile-time?

c++ clang undefined-behavior

Members wrongly initialized in nested aggregate? (MSVC)

c++ visual-c++ c++20 undefined-behavior

Are you allowed to copy a pointer and call delete on the copy?

c++ undefined-behavior delete-operator

Is using the address of an uninitialized variable UB? [duplicate]

c printf undefined-behavior variadic-functions

Is converting from unsigned char to signed char and vice versa in C89 well defined?

c undefined-behavior c89

Anomalous behavior (or possible bug) in JColorChooser

java swing undefined-behavior cmyk jcolorchooser

Does offsetof require pointer derefence?

c++ c macros undefined-behavior offsetof

Is int a = ++i + ++i undefined behaviour?

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