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Gecko/20010418


You can't use a va_list in a loop like it is done in
rpmio/rpmlog.c:vrpmlog(), that's non-portable C and breaks on platforms
that pass a va_list by reference, eg. PPC. va_list needs to be copied for
every use using __va_copy.

Reproducible: Always
Steps to Reproduce:
1. rpm -q --changelog rpm
2.
3.
	

--- rpm-4.0.2/rpmio/rpmlog.c.~1~        Tue Feb 13 10:23:33 2001
+++ rpm-4.0.2/rpmio/rpmlog.c    Thu Mar 15 14:18:07 2001
@@ -105,6 +105,7 @@ static void vrpmlog (unsigned code, cons
     /*@unused@*/ int fac = RPMLOG_FAC(code);
     char *msgbuf, *msg;
     int msgnb = BUFSIZ, nb;
+    va_list apc;
     FILE * msgout = stderr;
     rpmlogRec rec;

@@ -117,7 +118,8 @@ static void vrpmlog (unsigned code, cons
     /* Allocate a sufficently large buffer for output. */
     while (1) {
        /*@-unrecog@*/
-       nb = vsnprintf(msgbuf, msgnb, fmt, ap);
+       __va_copy(apc, ap);
+       nb = vsnprintf(msgbuf, msgnb, fmt, apc);
        /*@=unrecog@*/
        if (nb > -1 && nb < msgnb)
            break;