String with NULL auto-increment bug fix

Check position relative to end of string length rather than whether
char is NULL at end of initial alphanumerics in Perl_sv_inc

1 files changed, 1 insertions, 1 deletions

diff --git a/sv.c b/sv.c
index b9f682cb63..a53669a324 100644
--- a/sv.c
+++ b/sv.c
@@ -7298,7 +7298,7 @@ Perl_sv_inc(pTHX_ register SV *const sv)
     d = SvPVX(sv);
     while (isALPHA(*d)) d++;
     while (isDIGIT(*d)) d++;
-    if (*d) {
+    if (d < SvEND(sv)) {
 #ifdef PERL_PRESERVE_IVUV
 	/* Got to punt this as an integer if needs be, but we don't issue
 	   warnings. Probably ought to make the sv_iv_please() that does