NULL_WORD exists to provide an integral value representing null, primarily as a literal in x86 assembly code. (There are a small number of uses outside of x86 assembly code, some of which might be considered questionable.)
The definition of NULL_WORD varies by platform. It's also a macro. It seems like a sufficient definition for all platforms would be
const intptr_t NULL_WORD = 0;
In particular, it really ought not ever be defined as equivalent to NULL.
The definition of NULL_WORD varies by platform. It's also a macro. It seems like a sufficient definition for all platforms would be
const intptr_t NULL_WORD = 0;
In particular, it really ought not ever be defined as equivalent to NULL.
- relates to
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JDK-8343802 Prevent NULL usage backsliding
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- Open
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- links to
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Commit(master)
openjdk/jdk/4ac2e477
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Review(master)
openjdk/jdk/22468