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Shift operation by inappropriate constant

Reports shift operations where the shift value is a constant outside the reasonable range.

Integer shift operations outside the range 0..31 and long shift operations outside the range 0..63 are reported. Shifting by negative or overly large values is almost certainly a coding error.

Example:

int shiftSize = 32; // Warning: shift by 32 bits is equivalent to shift by 0 bits, so there's no shift at all. int mask = (1 << shiftSize) - 1;

Inspection Details

By default bundled with:

IntelliJ IDEA 2024.1, Qodana for JVM 2024.1,

Can be installed with plugin:

Java, 241.16690

Last modified: 29 April 2024