nobu	2017-05-01 09:35:02 +0900 (Mon, 01 May 2017)

  New Revision: 58525

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=58525

  Log:
    zlib.c: zstream_buffer_ungetbyte
    
    * ext/zlib/zlib.c (zstream_buffer_ungetbyte): simplify by using
      zstream_buffer_ungets().

  Modified files:
    trunk/ext/zlib/zlib.c
Index: ext/zlib/zlib.c
===================================================================
--- ext/zlib/zlib.c	(revision 58524)
+++ ext/zlib/zlib.c	(revision 58525)
@@ -829,17 +829,8 @@ zstream_buffer_ungets(struct zstream *z, https://github.com/ruby/ruby/blob/trunk/ext/zlib/zlib.c#L829
 static void
 zstream_buffer_ungetbyte(struct zstream *z, int c)
 {
-    if (NIL_P(z->buf) || RSTRING_LEN(z->buf) - z->buf_filled == 0) {
-	zstream_expand_buffer(z);
-    }
-
-    memmove(RSTRING_PTR(z->buf) + 1, RSTRING_PTR(z->buf), z->buf_filled);
-    RSTRING_PTR(z->buf)[0] = (char)c;
-    z->buf_filled++;
-    if (z->stream.avail_out > 0) {
-	z->stream.next_out++;
-	z->stream.avail_out--;
-    }
+    Bytef cc = (Bytef)c;
+    zstream_buffer_ungets(z, &cc, 1);
 }
 
 static void

--
ML: ruby-changes@q...
Info: http://www.atdot.net/~ko1/quickml/