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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

Available in:

IntelliJ IDEA 2023.3, Qodana for JVM 2023.3

Plugin:

Java, 233.SNAPSHOT

Last modified: 13 July 2023