* io.c (argf_next_argv): reset ARGF.next_p on ARGV.replace.

  r34409 breaks replacing ARGV.
  [ruby-dev:45160] [Bug #5952]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@34417 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 8 insertions, 0 deletions

diff --git a/io.c b/io.c
index 4bf65d9bdf..7bf5543d62 100644
--- a/io.c
+++ b/io.c
@@ -7306,6 +7306,14 @@ argf_next_argv(VALUE argf)
 	}
 	ARGF.init_p = 1;
     }
+    else {
+	if (NIL_P(ARGF.argv)) {
+	    ARGF.next_p = -1;
+	}
+	else if (ARGF.next_p == -1 && RARRAY_LEN(ARGF.argv) > 0) {
+	    ARGF.next_p = 1;
+	}
+    }
 
     if (ARGF.next_p == 1) {
       retry: