The analyzer has detected a potential error that may lead to an infinite loop. When you deal with the 'std::istream' class, calling the 'eof()' function is not enough to terminate the loop. If data reading fails, a call of the 'eof()' function will always return 'false'. You need an additional check of the value returned by the 'fail()' function to terminate the loop in this case.
Have a look at an example of incorrect code:
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while (!cin.eof())
{
int x;
cin >> x;
}You can fix the error by making the condition a bit more complex:
while (!cin.eof() && !cin.fail())
{
int x;
cin >> x;
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According to Common Weakness Enumeration, potential errors found by using this diagnostic are classified as CWE-834. |
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You can look at examples of errors detected by the V663 diagnostic. |
