StackOverflow Questions for Tag: undefined-behavior

just Impartial

Reputation: 99

Is immediately initializing a variable important in C++

c++variablesmemoryinitializationundefined-behavior

Score: 2

Answers: 4

Badasahog

Reputation: 763

Is assigning to a restrict qualified pointer always undefined behavior?

cpointersundefined-behaviorrestrict-qualifier

Score: 3

Answers: 3

Mes

Reputation: 347

Is dereference null pointer UB in C++20?

c++language-lawyerc++20undefined-behavior

Score: 7

Answers: 1

cbhattac

Reputation: 273

Is my understanding about undefined behavior in the following code using reinterpret_cast correct?

c++undefined-behaviorreinterpret-cast

Score: -1

Answers: 0

CPlus

Reputation: 4848

Accessing a single value in an array of union/struct with an array member

arraysclanguage-lawyerundefined-behavior

Score: 6

Answers: 4

YiFei

Reputation: 1856

SIMD load across memory boundary doesn't cause segfault?

c++segmentation-faultundefined-behaviorsimdintrinsics

Score: 2

Answers: 4

Badasahog

Reputation: 763

do sequential non volatile loads guarantee correctness when used in the vicinity of memory remapping?

cmemoryundefined-behavior

Score: 2

Answers: 2

Erhannis

Reputation: 4464

Heapless Box in Rust

rustmemory-managementundefined-behaviorunsaferust-no-std

Score: 0

Answers: 1

greenlagoon

Reputation: 121

memmove overwriting objects and their lifetimes

c++20undefined-behaviorlifetimememmove

Score: 1

Answers: 1

Gaith

Reputation: 828

Compiler behavior when evaluating sub-expressions

c++undefined-behavior

Score: -1

Answers: 2

Ichimonji_bleach

Reputation: 17

Type punning with char type in C/C++

c++undefined-behaviortype-punning

Score: -1

Answers: 1

Alex O

Reputation: 1876

Understanding implicit lifetime creation and aliasing in C++

c++clanglanguage-lawyerundefined-behaviortype-punning

Score: 3

Answers: 2

Konvt

Reputation: 125

Is placement new in an union UB for SOO?

c++c++11optimizationundefined-behaviorunions

Score: -2

Answers: 1

Joseph Garvin

Reputation: 21974

Is it possible to have a 32-bit pointer on x86-64 without undefined behavior?

cpointersundefined-behaviorpointer-conversion

Score: 5

Answers: 3

Gabriel Staples

Reputation: 53055

Googletest (gtest) / googlemock (gmock): Why is "interleav[ing] `EXPECT_CALL()`s and calls to the mock functions" undefined behavior?

c++googletestundefined-behaviorgooglemock

Score: 0

Answers: 1

Maximilian Matthé

Reputation: 338

Undefined behaviour? Local vs global scope and pointer to temporary array

c++undefined-behaviorcompiler-explorer

Score: 0

Answers: 1

greenlagoon

Reputation: 121

Unwanted implicit object creation in an array of std::byte VS char

c++charundefined-behaviorlifetimestd-byte

Score: -1

Answers: 1

anthonyvd

Reputation: 7590

Why is unsigned integer overflow defined behavior but signed integer overflow isn't?

c++cundefined-behaviorinteger-overflow

Score: 281

Answers: 9

Konvt

Reputation: 125

Can a function be marked noexcept if it takes a value type that may throw?

c++c++11exceptionundefined-behaviornoexcept

Score: 4

Answers: 1

Richard Steidl

Reputation: 21

Flatbuffers VectorIterator::operator- undefined behavior

c++undefined-behaviorimplicit-conversionflatbuffersinteger-promotion

Score: 2

Answers: 0

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StackOverflow Questions for Tag: undefined-behavior

Is immediately initializing a variable important in C++

Is assigning to a restrict qualified pointer always undefined behavior?

Is dereference null pointer UB in C++20?

Is my understanding about undefined behavior in the following code using reinterpret_cast correct?

Accessing a single value in an array of union/struct with an array member

SIMD load across memory boundary doesn&#39;t cause segfault?

do sequential non volatile loads guarantee correctness when used in the vicinity of memory remapping?

Heapless Box in Rust

memmove overwriting objects and their lifetimes

Compiler behavior when evaluating sub-expressions

Type punning with char type in C/C++

Understanding implicit lifetime creation and aliasing in C++

Is placement new in an union UB for SOO?

Is it possible to have a 32-bit pointer on x86-64 without undefined behavior?

Googletest (gtest) / googlemock (gmock): Why is &quot;interleav[ing] `EXPECT_CALL()`s and calls to the mock functions&quot; undefined behavior?

Undefined behaviour? Local vs global scope and pointer to temporary array

Unwanted implicit object creation in an array of std::byte VS char

Why is unsigned integer overflow defined behavior but signed integer overflow isn&#39;t?

Can a function be marked noexcept if it takes a value type that may throw?

Flatbuffers VectorIterator::operator- undefined behavior

SIMD load across memory boundary doesn't cause segfault?

Googletest (gtest) / googlemock (gmock): Why is "interleav[ing] `EXPECT_CALL()`s and calls to the mock functions" undefined behavior?

Why is unsigned integer overflow defined behavior but signed integer overflow isn't?