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Negative int hexadecimal constant in long context

Reports negative int hexadecimal constants in long context. Such constants are implicitly widened to long, which means their higher bits will become 1 rather than 0 (e.g., 0xFFFF_FFFF will become 0xFFFF_FFFF_FFFF_FFFFL). Unlikely this is intended, and even if it is, using an explicit long constant would be less confusing.

Example:

// Warning: this is int constant -1 which is widened to long // becoming 0xFFFF_FFFF_FFFF_FFFFL. long mask = 0xFFFF_FFFF;

New in 2022.3

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