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Uninitialized variable

In computing, an uninitialized variable is a variable that is declared but is not set to a definite known value before it is used. It will have some value, but not a predictable one. As such, it is a programming error and a common source of bugs in software.

Applications, Use in languages & Example of the C language

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Overview

Example of the C language

Impacts

Use in languages

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Uninitialized variable

Nodes36
Edges35
Triples17
Avg. degree1.94
Density0.055556
Components1

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Uninitialized variable

Top relations

has impact · 4
Uninitialized variable → ASLR, Exploiting, Uninitialized, When
related to Use in languages · 4
Uninitialized variable → Examples, In, The, Uninitialized
is a · 1
Uninitialized variable → variable that is declared but is not set to a definite known value before it is used
related to Further reading · 1
Uninitialized variable → CWE-457 Use

Important terminology Word statistics

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Important terminology

variables value uninitialized memory initialized languages variable example known software use bugs zero space default set used programming error stack

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Uninitialized variableis avariable that is declared but is not set to a definite known value before it is used0.90text
C use stack space for variablesinstance ofLanguages0.80text
and the collection of variables allocated for a subroutine is known as a stack frameinstance ofLanguages0.80text
assembly languageinstance ofUse in languagesUninitialized variables are a particular problem in languages0.80text
Cinstance ofUse in languagesUninitialized variables are a particular problem in languages0.80text
and Cinstance ofUse in languagesUninitialized variables are a particular problem in languages0.80text
uninitialized variables.In other languagesinstance ofThe programmer was given the burden of being aware of dangerous issues0.80text
variables are often initialized to known values when createdinstance ofThe programmer was given the burden of being aware of dangerous issues0.80text
Uninitialized variablehas impactUninitialized0.60section
Uninitialized variablehas impactWhen0.60section
Uninitialized variablehas impactASLR0.60section
Uninitialized variablehas impactExploiting0.60section

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    Min side: 3
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