Don’t do string overloading for printf int formats

See <20141130160250.GC31019@pjcj.net>.  Commit 354b74ae6f broke this.

1 files changed, 2 insertions, 0 deletions

diff --git a/sv.c b/sv.c
index 04b1cbbad1..65acdee561 100644
--- a/sv.c
+++ b/sv.c
@@ -11703,6 +11703,8 @@ Perl_sv_vcatpvfn_flags(pTHX_ SV *const sv, const char *const pat, const STRLEN p
         if (argsv && strchr("BbcDdiOopuUXx",*q)) {
             /* XXX va_arg(*args) case? need peek, use va_copy? */
             SvGETMAGIC(argsv);
+            if (UNLIKELY(SvAMAGIC(argsv)))
+                argsv = sv_2num(argsv);
             infnan = UNLIKELY(isinfnansv(argsv));
         }