embed small string

use flags 4 for *this object is embed*
use flags 8~64 for *embed string length*

3 files changed, 5 insertions, 5 deletions

diff --git a/mrbgems/mruby-print/src/print.c b/mrbgems/mruby-print/src/print.c
index 788b924f0..0cdbad6d4 100644
--- a/mrbgems/mruby-print/src/print.c
+++ b/mrbgems/mruby-print/src/print.c
@@ -11,8 +11,8 @@ printstr(mrb_state *mrb, mrb_value obj)
 
   if (mrb_string_p(obj)) {
     str = mrb_str_ptr(obj);
-    s = str->ptr;
-    len = str->len;
+    s = str->as.heap.ptr;
+    len = str->as.heap.len;
     fwrite(s, len, 1, stdout);
   }
 }
diff --git a/mrbgems/mruby-sprintf/src/sprintf.c b/mrbgems/mruby-sprintf/src/sprintf.c
index ff9627437..785068999 100644
--- a/mrbgems/mruby-sprintf/src/sprintf.c
+++ b/mrbgems/mruby-sprintf/src/sprintf.c
@@ -712,7 +712,7 @@ retry:
         if (*p == 'p') arg = mrb_inspect(mrb, arg);
         str = mrb_obj_as_string(mrb, arg);
         len = RSTRING_LEN(str);
-        RSTRING_LEN(result) = blen;
+        RSTRING(result)->as.heap.len = blen;
         if (flags&(FPREC|FWIDTH)) {
           slen = RSTRING_LEN(str);
           if (slen < 0) {
diff --git a/mrbgems/mruby-string-ext/src/string.c b/mrbgems/mruby-string-ext/src/string.c
index f194bbc0e..274acf6f4 100644
--- a/mrbgems/mruby-string-ext/src/string.c
+++ b/mrbgems/mruby-string-ext/src/string.c
@@ -33,8 +33,8 @@ mrb_str_swapcase_bang(mrb_state *mrb, mrb_value str)
   struct RString *s = mrb_str_ptr(str);
 
   mrb_str_modify(mrb, s);
-  p = s->ptr;
-  pend = s->ptr + s->len;
+  p = s->as.heap.ptr;
+  pend = s->as.heap.ptr + s->as.heap.len;
   while (p < pend) {
     if (ISUPPER(*p)) {
       *p = TOLOWER(*p);