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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/v1_1r@414 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 2 deletions

diff --git a/io.c b/io.c
index 8a2a5bc3a9..3e0ff9e90b 100644
--- a/io.c
+++ b/io.c
@@ -1744,8 +1744,8 @@ next_argv()
 	next_p = 0;
 	if (RARRAY(rb_argv)->len > 0) {
 	    filename = ary_shift(rb_argv);
-	    fn = RSTRING(filename)->ptr;
-	    if (RSTRING(filename)->len == 1 && fn[0] == '-') {
+	    fn = STR2CSTR(filename);
+	    if (strlen(fn) == 1 && fn[0] == '-') {
 		file = rb_stdin;
 		if (inplace) {
 		    rb_defout = rb_stdout;