In pp_eof, ensure stack space for the second argument to the tied EOF method.

Commit 32e653230c7ccc7f added this second argument, but didn't verify that the
stack always had sufficient space for it.

diff --git a/pp_sys.c b/pp_sys.c
index 3525bfe..44b8cf4 100644 (file)
--- a/pp_sys.c
+++ b/pp_sys.c
@@ -2031,6 +2031,7 @@ PP(pp_eof)
         * 1 = eof(FH)
         * 2 = eof()  <- ARGV magic
         */
+       EXTEND(SP, 1);
        if (MAXARG)
            mPUSHi(1);          /* 1 = eof(FH) - simple, explicit FH */
        else if (PL_op->op_flags & OPf_SPECIAL)