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Compass/ROSE automatically detects simple violations of this rule, although it may return some false positives. It may not catch more complex violations, such as initialization within functions taking arguments to uninitialized variables. It does catch the second noncompliant code example, and can be extended to catch the first as well.
The Coverity Prevent Version 5.0 UNINIT checker can find cases of an uninitialized variable being used before it is initialized, although it cannot detect cases of uninitialized members of a struct. Because Coverity Prevent cannot discover all violations of this rule further verification is necessary.
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