$fh->close(); print $fh "foo" would segfault under -w in

   report_evil_fh() because $fh doesn't have a name.

p4raw-id: //depot/perl@16166

diff --git a/util.c b/util.c
index 6b95a4d..1c40d46 100644 (file)
--- a/util.c
+++ b/util.c
@@ -3447,7 +3447,8 @@ Perl_report_evil_fh(pTHX_ GV *gv, IO *io, I32 op)
     if (gv && isGV(gv)) {
        SV *sv = sv_newmortal();
        gv_efullname4(sv, gv, Nullch, FALSE);
-       name = SvPVX(sv);
+        if (SvOK(sv))
+            name = SvPVX(sv);
     }
 
     if (op == OP_phoney_OUTPUT_ONLY || op == OP_phoney_INPUT_ONLY) {