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Webinar: C++ semantics - 06.11

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V3136. Constant expression in switch st…
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V3136. Constant expression in switch statement.

Jul 03 2017

The analyzer detected a constant expression in a 'switch' statement. This usually indicates the presence of a logic error in the code.

Consider the following synthetic example:

int i = 1;
switch (i)
{
  ....
}

The condition of the 'switch' statement is represented by a variable whose value can be computed at compilation time. This situation could have resulted from code refactoring: the previous version of the code changed the variable's value but then it was modified and the variable turned out to be no longer assigned any value.

This diagnostic is classified as:

You can look at examples of errors detected by the V3136 diagnostic.