[krbdev.mit.edu #3172] ns_ninit corrupts memory due to incompatibility with resolv.h

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Subject: AIX 4.3 ns_ninit corrupts memory
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>Submitter-Id:	net
>Originator:	Donn Cave
>Organization:
	Computing & Communications
	University of Washington
>Confidential:	no
>Synopsis:	ns_ninit corrupts memory due to incompatibility with resolv.h
>Severity:	serious
>Priority:	medium
>Category:	krb5-build
>Class:		sw-bug
>Release:	1.4.2
>Environment:
	AIX 4.3, 5.1, 5.2
System: AIX melville 3 4 00600210C000


>Description:
AIX state/__res_state declaration is incompatible with res_ninit().
The declared and hence allocated struct is 720 bytes, but empirically
the expected size appears to be at least 1490 bytes.  This is the same
on AIX 4.3, 5.1 and 5.2.
>How-To-Repeat:
kinit will immediately crash on any AIX platform.
>Fix:
The fix is already there (in configure), for AIX 5, and simply needs to
be applied to AIX 4 as well.