PerlIO_importFILE() should increase the reference count on the fd

that it brings into PerlIO managed space. (A long standing problem
reported by Steve Hay)

p4raw-id: //depot/perl@30610

1 files changed, 1 insertions, 0 deletions

diff --git a/perlio.c b/perlio.c
index 544b6425df..bba198c102 100644
--- a/perlio.c
+++ b/perlio.c
@@ -2879,6 +2879,7 @@ PerlIO_importFILE(FILE *stdio, const char *mode)
 	if ((f = PerlIO_push(aTHX_(f = PerlIO_allocate(aTHX)), PERLIO_FUNCS_CAST(&PerlIO_stdio), mode, NULL))) {
 	    s = PerlIOSelf(f, PerlIOStdio);
 	    s->stdio = stdio;
+	    PerlIOUnix_refcnt_inc(fileno(stdio));
 	}
     }
     return f;