bugprone-string-constructor¶
Finds string constructors that are suspicious and probably errors.
A common mistake is to swap parameters to the ‘fill’ string-constructor.
Examples:
std::string str('x', 50); // should be str(50, 'x')
Calling the string-literal constructor with a length bigger than the literal is suspicious and adds extra random characters to the string.
Examples:
std::string("test", 200); // Will include random characters after "test".
Creating an empty string from constructors with parameters is considered suspicious. The programmer should use the empty constructor instead.
Examples:
std::string("test", 0); // Creation of an empty string.
Options¶
- WarnOnLargeLength
When non-zero, the check will warn on a string with a length greater than LargeLengthThreshold. Default is 1.
- LargeLengthThreshold
An integer specifying the large length threshold. Default is 0x800000.