rspec/rules/S946/cfamily/rule.adoc

== Why is this an issue?

If the address of an automatic object is assigned to another automatic object of larger scope, or to a static object, or returned from a function then the object containing the address may exist beyond the time when the original object ceases to exist (and its address becomes invalid).


=== Noncompliant code example

[source,cpp]
----
int* f(void) {
  int local_auto;
  return &local_auto; // Noncompliant, returning address of an object allocated on the stack.
}
----


== Resources

* MISRA C:2004, 17.6
* MISRA {cpp}:2008, 7-5-2
* MISRA C:2012, 18.6
* https://wiki.sei.cmu.edu/confluence/x/UtcxBQ[CERT, DCL30-C.] - Declare objects with appropriate storage durations


ifdef::env-github,rspecator-view[]

'''
== Implementation Specification
(visible only on this page)

=== Message

The address of 'xxx' is invalid once the function returns.


'''
== Comments And Links
(visible only on this page)

=== is duplicated by: S838

=== is related to: S837

=== is related to: S839

endif::env-github,rspecator-view[]