P4
This is a preparatory step for the Leyden project.
Today, the CDS archive doesn't contain instances of java.lang.Boolean. However, this may change as we implement more Leyden optimizations.
Going forward, in order to satisfy this requirement in the JLS
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https://docs.oracle.com/javase/specs/jls/se21/jls21.pdf
§ 5.1.7 Boxing Conversion
If the value p being boxed is the result of evaluating a constant expression (§15.29) of type boolean, byte, char, short, int, or long, and the result is true, false, a character in the range '\u0000' to '\u007f' inclusive, or an integer in the range -128 to 127 inclusive, then let a and b be the results of any two boxing conversions of p. It is always the case that a == b.
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If we store an instance of Boolean in the CDS archive, we must also store Boolean.TRUE and Boolean.FALSE in the archive as well, in order for the (a == b) identity tests to work as expected.
Today, the CDS archive doesn't contain instances of java.lang.Boolean. However, this may change as we implement more Leyden optimizations.
Going forward, in order to satisfy this requirement in the JLS
========
https://docs.oracle.com/javase/specs/jls/se21/jls21.pdf
§ 5.1.7 Boxing Conversion
If the value p being boxed is the result of evaluating a constant expression (§15.29) of type boolean, byte, char, short, int, or long, and the result is true, false, a character in the range '\u0000' to '\u007f' inclusive, or an integer in the range -128 to 127 inclusive, then let a and b be the results of any two boxing conversions of p. It is always the case that a == b.
========
If we store an instance of Boolean in the CDS archive, we must also store Boolean.TRUE and Boolean.FALSE in the archive as well, in order for the (a == b) identity tests to work as expected.
- duplicates
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JDK-8315737 JEP 483: Ahead-of-Time Class Loading & Linking
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- Closed
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