amd64/126543: [amd64] __builtin_frame_address does not return 0 when reaching the top of the stack

[kib at FreeBSD.org]

Synopsis: [amd64] __builtin_frame_address does not return 0 when reaching the top of the stack

Responsible-Changed-From-To: freebsd-amd64->kib
Responsible-Changed-By: kib
Responsible-Changed-When: Thu Aug 21 18:56:29 UTC 2008
Responsible-Changed-Why: 
Take,

http://www.freebsd.org/cgi/query-pr.cgi?pr=126543