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V655. Strings were concatenated but not…
Analyzer diagnostics
General Analysis (C++)
General Analysis (C#)
General Analysis (Java)
Diagnosis of micro-optimizations (C++)
Diagnosis of 64-bit errors (Viva64, C++)
MISRA errors
AUTOSAR errors
OWASP errors (C#)
Additional information
Contents

V655. Strings were concatenated but not used. Consider inspecting the expression.

Dec 06 2012

The analyzer has detected a potential error: an unused concatenation of string variables in the code was found. The types of these variables are as follows: std::string, CString, QString, wxString. These expressions most often appear in the code when an assignment operator is missing or as a result of careless code refactoring.

Consider the following sample of incorrect code:

void Foo(std::string &s1, const std::string &s2)
{
  s1 + s2;
}

The code contains a misprint: '+' is written instead of '+='. The code compiles well but is senseless. This is the fixed code:

void Foo(std::string &s1, const std::string &s2)
{
  s1 += s2;
}

This diagnostic is classified as:

You can look at examples of errors detected by the V655 diagnostic.

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