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New posts in undefined-behavior

Undefined behavior and sequence points reloaded

c++ undefined-behavior c++-faq sequence-points

Is signed integer overflow still undefined behavior in C++?

c++ c++11 undefined-behavior integer-overflow

At what point in the loop does integer overflow become undefined behavior?

c++ c undefined-behavior integer-overflow

Why does printf("%f",0); give undefined behavior?

c++ c printf implicit-conversion undefined-behavior

Detecting signed overflow in C/C++

c++ c undefined-behavior signed integer-overflow

Can branches with undefined behavior be assumed unreachable and optimized as dead code?

c++ language-lawyer undefined-behavior dead-code unreachable-code

(Why) is using an uninitialized variable undefined behavior?

c undefined-behavior initialization

Printing null pointers with %p is undefined behavior?

c language-lawyer c99 undefined-behavior c11

Is using malloc for int undefined behavior until C++20

c++ malloc undefined-behavior c++20

Does "Undefined Behavior" really permit *anything* to happen? [duplicate]

c++ c language-lawyer undefined-behavior

Is passing a C++ object into its own constructor legal?

c++ class constructor language-lawyer undefined-behavior

Is the "struct hack" technically undefined behavior?

c undefined-behavior c89

How did I get a value larger than 8 bits in size from an 8-bit integer?

c++ gcc undefined-behavior

When does invoking a member function on a null instance result in undefined behavior?

c++ undefined-behavior language-lawyer standards-compliance null-pointer

Why does integer overflow on x86 with GCC cause an infinite loop?

c++ c gcc x86 undefined-behavior

Accessing inactive union member and undefined behavior?

c++ undefined-behavior language-lawyer unions

Why does the enhanced GCC 6 optimizer break practical C++ code?

c++ gcc compiler-optimization undefined-behavior

Optimizing away a "while(1);" in C++0x

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

In practice, why would different compilers compute different values of int x = ++i + ++i;?

c++ undefined-behavior

Why does this loop produce "warning: iteration 3u invokes undefined behavior" and output more than 4 lines?

c++ gcc undefined-behavior
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