[ID 20010912.007] substr reference core dump

Message-Id: <20010912141116.6058.qmail@quasar.home.lunix>

p4raw-id: //depot/perl@12005

diff --git a/mg.c b/mg.c
index 9def37f..3de4420 100644 (file)
--- a/mg.c
+++ b/mg.c
@@ -1506,7 +1506,7 @@ Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg)
        sv_insert(lsv, lvoff, lvlen, tmps, len);
        SvUTF8_on(lsv);
     }
-    else if (SvUTF8(lsv)) {
+    else if (lsv && SvUTF8(lsv)) {
        sv_pos_u2b(lsv, &lvoff, &lvlen);
        tmps = (char*)bytes_to_utf8((U8*)tmps, &len);
        sv_insert(lsv, lvoff, lvlen, tmps, len);