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V529. Suspicious semicolon ';' after 'i…
Analyzer diagnostics
General Analysis (C++)
General Analysis (C#)
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Diagnosis of micro-optimizations (C++)
Diagnosis of 64-bit errors (Viva64, C++)
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Additional information
Contents

V529. Suspicious semicolon ';' after 'if/for/while' operator.

Nov 19 2010

The analyzer detected a potential error: a semicolon ';' stands after the 'if', 'for' or 'while' operator.

For example:

for (i = 0; i < n; i++);
{
  Foo(i);
}

This is the correct code:

for (i = 0; i < n; i++)
{
  Foo(i);
}

Using a semicolon ';' right after the for or while operator is not an error in itself and you may see it quite often in code. So the analyzer eliminates many cases relying on some additional factors. For instance, the following code sample is considered safe:

for (depth = 0, cur = parent; cur; depth++, cur = cur->parent)
  ;

This diagnostic is classified as:

You can look at examples of errors detected by the V529 diagnostic.

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