lstat on *GLOB{IO} with warnings on would segfault

(noticed by Andrew Dougherty)

p4raw-id: //depot/perl@28690

diff --git a/pp_sys.c b/pp_sys.c
index a7c9414..909f5f7 100644 (file)
--- a/pp_sys.c
+++ b/pp_sys.c
@@ -2798,7 +2798,7 @@ PP(pp_stat)
            do_fstat_warning_check:
                if (ckWARN(WARN_IO))
                    Perl_warner(aTHX_ packWARN(WARN_IO),
-                       "lstat() on filehandle %s", GvENAME(gv));
+                       "lstat() on filehandle %s", gv ? GvENAME(gv) : "");
            } else if (PL_laststype != OP_LSTAT)
                Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
        }