solve one taint problem

[p5sagit/p5-mst-13.2.git] / mg.c

diff --git a/mg.c b/mg.c
index 9fe3369..4da71b1 100644 (file)
--- a/mg.c
+++ b/mg.c
@@ -454,6 +454,7 @@ Perl_magic_len(pTHX_ SV *sv, MAGIC *mg)
                    char *s    = rx->subbeg + s1;
                    char *send = rx->subbeg + t1;
 
+                    i = t1 - s1;
                    if (is_utf8_string((U8*)s, i))
                        i = Perl_utf8_length(aTHX_ (U8*)s, (U8*)send);
                }