tweak change#4502

p4raw-link: @4502 on //depot/perl: 18708f5a7334d978ddf7562cb7f58e28bec6e4ed

p4raw-id: //depot/perl@4535

1 files changed, 7 insertions, 2 deletions

diff --git a/doio.c b/doio.c
index b340ec6577..16cff29efd 100644
--- a/doio.c
+++ b/doio.c
@@ -490,8 +490,11 @@ Perl_nextargv(pTHX_ register GV *gv)
 	PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
     if (io && (IoFLAGS(io) & IOf_ARGV) && (IoFLAGS(io) & IOf_START)) {
 	IoFLAGS(io) &= ~IOf_START;
-	if (PL_inplace)
+	if (PL_inplace) {
+	    if (!PL_argvout_stack)
+		PL_argvout_stack = newAV();
 	    av_push(PL_argvout_stack, SvREFCNT_inc(PL_defoutgv));
+	}
     }
     if (PL_filemode & (S_ISUID|S_ISGID)) {
 	PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv)));  /* chmod must follow last write */
@@ -668,7 +671,9 @@ Perl_nextargv(pTHX_ register GV *gv)
 	IoFLAGS(io) |= IOf_START;
     if (PL_inplace) {
 	(void)do_close(PL_argvoutgv,FALSE);
-	if (io && (IoFLAGS(io) & IOf_ARGV) && AvFILLp(PL_argvout_stack) >= 0) {
+	if (io && (IoFLAGS(io) & IOf_ARGV)
+	    && PL_argvout_stack && AvFILLp(PL_argvout_stack) >= 0)
+	{
 	    GV *oldout = (GV*)av_pop(PL_argvout_stack);
 	    setdefout(oldout);
 	    SvREFCNT_dec(oldout);