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New posts in undefined-behavior

Is `*--p` actually legal(well formed) in C++03

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

Why does Rust disallow mutable aliasing?

rust undefined-behavior lifetime

In C, if I cast & dereference a pointer, does it matter which one I do first?

c casting undefined-behavior

How to spot undefined behavior

c++ c undefined-behavior

Assigning a reference by dereferencing a NULL pointer

c++ pointers reference undefined-behavior null-pointer

Is using sizeof on a variable where a type of the same name exists well defined?

c sizeof undefined-behavior

Are there sequence points in the expression a^=b^=a^=b, or is it undefined?

c undefined-behavior sequence-points compound-assignment

GCC 4.8 with GNU STL produces bad code for std::string constructor?

c++ gcc stl undefined-behavior

How do we explain the result of the expression (++x)+(++x)+(++x)?

c++ undefined-behavior operator-precedence

What replacements are available for formerly-widely-supported behaviors not defined by C standard

c language-lawyer undefined-behavior

"Illegal hardware instruction" from very simple code

c standards undefined-behavior

Is i += ++i undefined behavior in C++0x?

c++ c++11 undefined-behavior compound-assignment

Is it well-defined to cast xvalues to lvalues for passing to functions?

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

Sequence points and side effects: Quiet change in C11?

c c99 undefined-behavior c11 sequence-points

Does sscanf require a null terminated string as input?

c scanf language-lawyer undefined-behavior

Dangling references and undefined behavior

c++ reference undefined-behavior language-lawyer

Is modifying a variable in its declaration statement well-defined?

c++ language-lawyer undefined-behavior

Validity of the code

c++ undefined-behavior

Placement-new address alignment

c++ memory-management undefined-behavior memory-alignment
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