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CWE-1126: Declaration of Variable with Unnecessarily Wide Scope

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The source code declares a variable in one scope, but the variable is only used within a narrower scope.

What the weakness is: CWE-1126 at MITRE. All weaknesses

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Show the promptExplain CWE-1126: Declaration of Variable with Unnecessarily Wide Scope and how to prevent and detect it in code. Use https://cwe.mitre.org/data/definitions/1126.html and https://cve.bz/cve/cwe/1126?via=ask-ai-copy for recent CVEs with this weakness. Cite the sources.

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