port-sparc64/47536: printf conversion fails for long double on sparc64

[martin%NetBSD.org@localhost]

>Number:         47536
>Category:       port-sparc64
>Synopsis:       printf conversion fails for long double on sparc64
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-sparc64-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Feb 06 14:35:01 +0000 2013
>Originator:     Martin Husemann
>Release:        NetBSD 6.99.16
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD whoever-brings-the-night.aprisoft.de 6.99.16 NetBSD 6.99.16 
(WHOEVER) #20: Mon Feb 4 12:20:15 CET 2013 
martin%emmas.aprisoft.de@localhost:/usr/src/sys/arch/sparc64/compile/WHOEVER 
sparc64
Architecture: sparc64
Machine: sparc64
>Description:

This is a test program by Edward Berner posted to the Fossil users list:

#include <stdio.h>

int
main (int argc, char *argv[])
{
        long long n;
        long double ld;

        n = 2147483648LL;
        ld = n; 
        printf (" n = %lld\n", n);
        printf ("ld = %0.17Lg\n", ld);

        return 0;
}


When run on sparc64 it prints:
 n = 2147483648
ld = 0


>How-To-Repeat:
s/a

>Fix:
n/a