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New posts in undefined-behavior

Is while(1); undefined behavior in C?

c infinite-loop undefined-behavior

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

c++ undefined-behavior

Copying structs with uninitialized members

c++ initialization copy-constructor undefined-behavior

"is not required" == undefined behavior?

c++ pointers language-lawyer undefined-behavior comparison-operators

C standard compliant way to access null pointer address?

c language-lawyer undefined-behavior null-pointer

Weird behaviour with class fields when adding to a std::vector

c++ vector stdvector undefined-behavior push-back

In which versions of the C++ standard does "(i+=10)+=10" have undefined behaviour?

c++ c++11 undefined-behavior language-lawyer c++03

What's the reason for letting the semantics of a=a++ be undefined?

c undefined-behavior language-lawyer

Arithmetic right shift gives bogus result?

c++ gcc undefined-behavior bit-shift

Why doesn't vector::clear remove elements from a vector?

c++ stdvector undefined-behavior

Why isn't arr[-2] equivalent to -2[arr]?

c++ arrays undefined-behavior

Difference in the end of lifetime rules?

c++ language-lawyer undefined-behavior

Do I need to cast to unsigned char before calling toupper(), tolower(), et al.?

c++ language-lawyer undefined-behavior toupper tolower

How to implement memmove in standard C without an intermediate copy?

c c99 undefined-behavior unspecified-behavior

Are functions calls in a constructor's initializer-list sequenced?

c++ language-lawyer undefined-behavior operator-precedence initialization-order

How undefined is undefined behavior?

c undefined-behavior language-lawyer

Flexible array members can lead to undefined behavior?

c language-lawyer undefined-behavior flexible-array-member

May I treat a 2D array as a contiguous 1D array?

c++ arrays pointers multidimensional-array undefined-behavior

Is it defined behavior to reference an early member from a later member expression during aggregate initialization?

c++ c++11 language-lawyer c++14 undefined-behavior

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

c++ gcc assembly standards undefined-behavior
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