1 files changed, 15 insertions, 9 deletions
@@ -930,6 +930,18 @@ strio_extend(struct StringIO *ptr, long pos, long len)
 }
 }
 /*
 * call-seq:
 * ungetc(character) -> nil
@@ -967,8 +979,7 @@ strio_ungetc(VALUE self, VALUE c)
 if (enc != enc2 && enc != rb_ascii8bit_encoding()) {
 c = rb_str_conv_enc(c, enc2, enc);
 }
-	strio_unget_bytes(ptr, RSTRING_PTR(c), RSTRING_LEN(c));
-	RB_GC_GUARD(c);
 return Qnil;
 }
 }
@@ -995,13 +1006,8 @@ strio_ungetbyte(VALUE self, VALUE c)
 strio_unget_bytes(ptr, &cc, 1);
 }
 else {
-	long cl;
 StringValue(c);
-	cl = RSTRING_LEN(c);
-	if (cl > 0) {
- strio_unget_bytes(ptr, RSTRING_PTR(c), cl);
- RB_GC_GUARD(c);
-	}
 }
 return Qnil;
 }
@@ -1032,7 +1038,7 @@ strio_unget_bytes(struct StringIO *ptr, const char *cp, long cl)
 if (rest > cl) memset(s + len, 0, rest - cl);
 pos -= cl;
 }
- memcpy(s + pos, cp, cl);
 ptr->pos = pos;
 return Qnil;
 }