rspec/rules/S2389/java/rule.adoc
Marco Borgeaud 4e0e265d9e Update links to securecoding.cert.org
They redirect to https://wiki.sei.cmu.edu.
Fix broken links for open rules.
Remove broken links from closed rules.
Remove links in Java rules for CERT C rules with no obvious replacement.
Expand broken tinyurl to CERT.
2024-08-22 09:59:26 +02:00

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== Why is this an issue?
When a cycle exists between classes during their ``++static++`` initialization, the results can be unpredictable because they depend on which class was initialized first.
=== Noncompliant code example
[source,java]
----
public class A {
public static int a = B.b + 1; // Noncompliant; sometimes a = 1, others a = 2
}
public class B {
public static int b = A.a + 1; // Noncompliant; sometimes b = 1, others b = 2
}
----
== Resources
* CERT - https://wiki.sei.cmu.edu/confluence/display/java/DCL00-J.+Prevent+class+initialization+cycles[DCL00-J. Prevent class initialization cycles]
ifdef::env-github,rspecator-view[]
'''
== Implementation Specification
(visible only on this page)
=== Message
Class "xxx" accesses this class during static initialization.
'''
== Comments And Links
(visible only on this page)
=== is related to: S3263
=== on 13 Jan 2015, 15:17:51 Ann Campbell wrote:
We had this in your queue for research, but I came across the CERT reference...
=== on 27 Jan 2015, 20:13:41 Freddy Mallet wrote:
And so the "cwe" tag is missing :)
endif::env-github,rspecator-view[]